Display ads on the dns server. Enable and configure the DNS server

Computers on the network (including the Internet) do not have names; data transfer is carried out using IP addresses.

IP address(Internet Protocol Address) - a numerical address on the Internet, which looks like 123.123.123.123. IP addresses are difficult for a human to remember, especially when you visit dozens of sites a day with different IP addresses.

Similar to how you save phone numbers, you can have a notebook or phone book for IP addresses. Role telephone directory on the Internet perform DNS(Domain Name System), a system of domain names. When you enter a domain name in an Internet browser, it is resolved via DNS into an IP address that is used to access the server.

In fact, DNS servers store not only the IP address of the server, but also other data such as resource DNS records"MX", "TXT", "A", "CNAME", "SOA".

DNS servers that store information about thousands and millions of domains are often hosted on separate powerful servers. In such cases, the expression "DNS-server" may mean the entire hardware and software complex (the server and the program itself).

Why register DNS servers for a domain

When you register a new domain name, no DNS server on the Internet knows about it. And until information about your domain appears on the DNS servers of the Internet, neither the site, nor mail, no other services will work.

In order for DNS servers on the Internet to know about your domain, someone must tell them this, and this someone is the DNS server that you register for your domain. It plays the role of a "herald" who always keeps the latest information about your domain. For example, hosting DNS servers ns1.hosting.site and ns2.hosting.site store information about domains that are connected to the hosting site.

About differences between DNS servers ns1.hosting..hosting.site and ns1..site and which of these pairs is right for you, read in.

DNS servers are registered in pairs, this is done for better fault tolerance: if one DNS server fails, the other will remain working.

Scheme for determining an IP address by domain name

This diagram briefly explains what happens when you want to visit a particular site.

1. 1 Your computer contacts your ISP's DNS servers ( arrow 1). The provider's DNS servers look up the IP address in their cache (an intermediate buffer with quick access) and, if they find it, they give you this IP and by IP your computer accesses the server hosting the site ( arrow 7).
2. 2 If the pair "domain - IP address" is not in the cache, then the provider's DNS server makes recursive queries to the root DNS servers ( arrow 2), of which there are only a few around the world. Changes to domain settings on root servers are not updated immediately, but every few hours. So, for example, changes in the root DNS servers of the RU zone are updated only 4 times a day. The root servers return the addresses of the domain's DNS servers ( arrow 3) that store the DNS zone of the domain.
3. 3 Having received the addresses of DNS servers, the provider makes a request to one of them ( arrow 4), receives in response the desired IP address ( arrow 5), remembers it in the cache (so that later you do not need to contact the root DNS server each time) and passes it to your browser ( arrow 6).
4. 4 And only now, when the browser has the IP address of the site, it can contact the hosting server where the site is located ( arrow 7) and can display it on your computer screen ( arrow 8).

So:

• The information on the root servers is updated only a few times a day.
• Internet providers, as a rule, update the DNS server cache no more than once a day (some providers update the cache even less often, but usually no more than 72 hours), so if after registering or transferring a domain (changing DNS servers), the site did not immediately start working, do not worry - just wait a while.
• To check if DNS has been updated, use .

The above structure DNS work greatly simplified, for details you can refer to the reference literature on the Internet.

DNS server is extremely useful opportunity secure own computer from malicious sites. The process of working for beginners seems difficult, but in reality everything is much simpler, and the procedure for installing a dns server will not take much time.

DNS is an acronym derived from Domain Name System. FROM of English language in Russian, this translates as "Domain Name System", which changes them into IP addresses. And the dns server stores the corresponding addresses in the database.

The work is carried out in this way: the browser, going to the site, accesses the DNS server to find out the desired address. The Server determines the site, sends a request to it, and sends the response back to the user.

How to know if the DNS server is enabled on a computer

The current DNS server settings are defined as follows:

1. "Control Panel" -> "Network and Internet" -> "View network status and tasks". Highlight your network connection, go to the General panel, then properties.
2. Go to the properties of "Internet Protocol Version 4 (TCP/IPv4)".
3. Open the General tab. If the option to use the following DNS server addresses is activated, it means that it is in working mode.

Repeat the previous steps, activate "Use DNS server". After that, you need to specify primary DNS server and then secondary.

How to set up/change DNS

When changing or additional setting you don't need to do a lot of things. You must use the window that was opened earlier, go to the "Advanced" item. Here, detailed adjustment of access to DNS servers is performed. In Windows 7, it's all possible to configure it yourself. Therefore, the question of how to change the dns server yourself will not cause problems.

DNS suffixes are also available for management. The average user does not need them. This setting, which helps to conveniently share resources, was created for providers.

On a wifi router

When using a router in the DNS options, you must set its IP address. To perform these manipulations, you will need enabled DNS relay and DHCP server.

The router interface is intended for testing and subsequent detailed settings. First you need to check the DNS in the WAN port. DNS relay is activated in the LAN port settings.

On the computer

Setting up a DNS server in Windows 10 is similar to a similar situation in early versions OS. First you need to select the properties of "Internet Protocol Version 4 (TCP/IPv4)". Go to additional options and set up a list of servers.

Setting up a DNS server on a computer and on a laptop is the same.

On a tablet

Depending on the installed operating system, the actions are somewhat different, but they are all united by the following points:

• Open the "Wi-Fi" menu located in the "Settings".
• Go to the properties of the current Internet connection.
• Click "Change network", then - "Show advanced options".
• Scroll to the DNS servers item, then register them.

On a smartphone

Since now there is little difference between operating systems there is no phone and tablet, to configure the necessary dns servers, it is enough to know the instructions described above.

Possible errors and how to fix them

Internet problems occur when wrong settings DNS servers, including when they fail unexpectedly.

What to do if the server is not responding or not found

Most often, this problem occurs when a server shutdown or lost settings. To do this, open the "Control Panel", go to "System and Security", then - "Administrative Tools". Click on "Services", find "DNS Client" and double click on it. The status bar shows the "Running" command. Otherwise, choose automatic type launch from the drop down list above.

If the service is running but the error still appears, there is a server problem. First, it is better to change the DNS server addresses according to the above instructions. However, it is still possible to reinstall the drivers network card, check your internet connection and check with your ISP about possible technical problems.

Doesn't resolve names correctly

With such an error, you need to check the correctness of the parameters of your DNS server. And it's better to just resort to changing the address of the dns server to get rid of the problem.

Also, problems are possible on the operator's servers, and the problem is solved in the same way - by changing the DNS.

For an inexperienced user, there is a list of quality and free servers:

Addresses: 8.8.8.8; 8.8.4.4

Like all Google services, performs its tasks qualitatively, but has a well-known disadvantage - it collects and stores user statistics. Despite this, the server does not have any access to personal data, so you should not worry about security.

If you want to learn more about server-work, there is official documentation on the information site.

OpenDNS

Addresses: 208.67.222.222; 208.67.220.220

A popular server due to the presence of a large range of filters and protection against identity theft. Basic features are free, but you can purchase premium access to create a "blocked network environment" and increase connection speed.

DNS.WATCH

Addresses: 84.200.69.80; 84.200.70.40

Does not require registration to use, provides a more serious level. The only negative is the low speed.

Norton ConnectSafe

Addresses: 199.85.126.10; 199.85.127.10

Also does not "asks" pre-registration, securely stores user data. Created by developers Norton antivirus without requiring additional advertising.

Level3 DNS

Addresses: 4.2.2.1; 4.2.2.2

Not only suitable for personal use but also corporate purposes. Fully free resource, ranks third in global popularity.

Comodo Secure DNS

Addresses: 8.26.56.26; 8.20.247.20

The basic version is free, but for some cash possible to purchase a large number of useful services. Both in paid and free options provides reliable protection data.

OpenNIC DNS

Addresses: you should go to the project website, it will select the best ones depending on the user's location.

Due to its huge coverage, it allows you to conveniently surf the Internet anywhere in the world.

DHCP server: what is it and what are its features

Most suitable for grids with a large number of computers, due to the transfer of its network settings to all connected devices.

This server allows the administrator to set a range of server hosts and avoid spending a lot of time on detailed optimization.

It only works with IP address settings and the addresses themselves.

Conclusion

The primary task of DNS servers is to transmit an IP address. Servers from other companies, some of which are described above, can speed up and greatly facilitate Internet surfing. At the same time, it does not need painstaking configuration, and many errors are solved using another server.

Many owners of home PCs, laptops and tablets use the Internet without understanding the principles of its functioning at all. You can get a much more stable connection than the provider usually gives us by taking the time to study this issue. One of the possibilities to improve the comfort when using the network is to replace the default DNS address with an alternative one.

What is DNS and why is it needed

To begin with, let's figure out: what is the meaning of the letter combination DNS. The full name is Domain Name System, and translated into Russian means "domain name service". Each site on the Internet has its own domain name, we see it every day in the address bar of the browser. For example, for a well-known social Facebook networks it will look like this https://www.facebook.com. In addition, each site has its own IP address in the form digital value, like this: 31.13.65.36.

DNS server translates the site's domain name into an IP address

The function of DNS is to store data about the addresses and domain names of sites. When a letter request for a site name is received, the DNS server returns numerical value resource address.

How to find out which DNS is provided by the ISP

If you periodically have difficulties accessing the Internet, it is better to use the installation specific address DNS, not automatic tuning. Such a connection works more stable. To do this, you need to find out the address of your provider. The easiest way is to call the operator of the organization that supplies you with the Internet service. If this is not possible, find out DNS address using Windows tools. To do this, you need to call the command line.

You must do the following:

1. Open the "Start" menu, then "All Programs", on the "Accessories" tab, click "command prompt".
   

   Enter the "Start Menu" select " Command line»

2. Alternative method: simultaneously press the combination Win keys and R - in the tab that appears, type the command "cmd" and click "OK"

   On the Run tab, type "cmd" and click "OK"

3. In the window that appears, type the command "nslookup" and press "Enter".

   Type "nslookup" in Command Prompt and press "Enter"

4. This way you will get the provider's DNS address value.

   Your ISP's IP address will appear in the Command Prompt window.

Alternative DNS servers on the Internet, overview, pros and cons

Each ISP has its own DNS service, but sometimes it makes sense to connect to an alternative server. The reasons may be different:

• provider is unable to provide stable work DNS;
• the user seeks to increase the level of protection of his computer;
• PC owner wants to increase network speed;
• the desire to get rid of restrictions on access to information based on territorial position.

Consider best options and try to choose the most suitable one.

Google Public DNS

The service launched in December 2009 as an experimental service. AT this moment is the largest public DNS service in the world, handling over 70 billion queries per day on average. It uses the CDN (Content Distribution Network) method of information transfer. Google Servers Public DNS provides support for the Internet protocol IPv 6.

Video: A detailed and accessible description of installing an alternative DNS from Google

His undeniable advantages are:

1. High speed - ensured by using the latest technical developments.
2. Reliability - obtained through the use powerful servers and extensive infrastructure.
3. Security - based on the use of your own software.

The only negative associated with the activity of the service is the collection of data about users to earn money on advertising. This is not a serious breach of security, but potentially a disclosure of your personal information.

Open DNS

Open DNS is the largest, most trusted DNS service on the internet. It has 12 global data centers. It uses Anycast routing technology, thanks to which it responds to DNS requests faster than other providers. Websites will load faster and you won't have to worry about DNS outages depending on your ISP. Over 50 customizable filtering categories allow parents to control the websites their children visit. Open DNS blocks websites that try to steal your confidential information and passwords, pretending they are legitimate sites.

Video: How to set up Open DNS on your home computer

Its advantages:

1. Quick response to requests thanks to the use of new technologies and an extensive network of servers.
2. High degree of reliability achieved through the use of the latest equipment.
3. The ability to stop an Internet attack before it happens - the service filters traffic, it has its own database of malicious sites.
4. Basic features are provided free of charge.
5. Setup takes literally minutes.

The disadvantage is the need to register on the service.

DNS WATCH

If you need complete privacy - DNS WATCH is for you. It does not require registration and provides additional protection. No one will be able to specify which websites you should not visit. By using DNS WATCH services, you no longer need to rely on your ISP when searching the Internet. You can be sure that none DNS queries are not censored. The service does not register Internet requests, you always remain an anonymous user. The only drawback is the low speed.

DNS WATCH service page providing DNS services

Norton Connect Safe

Norton ConnectSafe will protect your computer from malicious and unwanted Internet resources. Does not require installation additional equipment and software. Just enter IP addresses DNS service. It is free for non-commercial use.

Video: set up protection for incoming Internet traffic, set up Norton ConnectSafe

Helps secure web browsing:

1. Being a product of the company Norton, which specializes in software in the field of Internet security, will put a reliable barrier on the way of malicious, fraudulent sites.
2. Blocks sites with explicit sexual content.
3. It makes it possible to restrict children from viewing sites with questionable content.

Service is not a complete replacement antivirus program installed on the user's computer. Norton ConnectSafe is your first layer of protection.

Level 3 DNS

The service ranks third in popularity. In addition to DNS services, it offers a large number of other products. Constantly develops new services designed to help business. An advanced DNS provider with a flexible and reliable network of servers that responds quickly to customer needs. Uses a combination of public and private connectivity options via fiber or cloud. They are combined with Layer 3 security solutions, include necessary applications, DNS services and functions. Level 3 DNS allows you to create an ideal layer 3 hybrid network environment.

Description of Level 3 DNS Service Capabilities

It is necessary to take into account the fact that the service registers all requests coming from your computer.

Comodo Secure DNS

Comodo Secure DNS is a domain name resolution service that handles DNS requests through its network of redundant DNS servers. It will provide much more reliable connection than your ISP's servers. If you choose to use Comodo Secure DNS, network settings your PC will be changed so that all applications that access the Internet will use Comodo servers secure DNS.

Description of the features provided to users of Comodo Secure DNS

Comodo Secure DNS gives you a more secure, smarter and fast internet. He uses:

• reliable server infrastructure;
• high structured system DNS and Comodo help pages;
• domain name filtering functions;
• Secure DNS refers to a block list of dangerous sites.

Majority additional features provided on a fee basis.

Open NIC DNS

Non-commercial project, does not charge for access to DNS services. Completely run by volunteers, and free for users. No government can stop you from visiting your favorite sites. By starting to use OpenNIC DNS servers provided by volunteers, you can be sure that your connection will not be censored. The service has a huge network infrastructure, you can connect to the server closest to you. Simply select it from the list.

Description of the goals and policies of the Open NIC DNS service

DNS setting

After reviewing the capabilities of the services that provide their servers, choose the most suitable one, in your opinion. To configure an alternative DNS, use the table with IP addresses.

Table: IP addresses of alternative DNS servers

After selecting the appropriate service, you can begin to change the DNS settings:

1. Hover your mouse over the "Network" icon and left-click.

   The Network icon indicates the presence of an Internet connection

2. In the "Current Connections" tab that appears, select "Network and Sharing Center" public access" and press left button mice.

   Left click on "Network and Sharing Center"

3. In the new window, select "Local Area Connection".

   On the "View Basic Network Status" tab, left-click on "Local Area Connection"

4. will appear new tab, click Properties.

   On the tab that appears, click "Properties"

5. Select "Internet Protocol Version 4 (TCP/IP 4)", click the "Properties" button again.

   Select "Internet Protocol Version 4 (TCP/IP 4)" and click "Properties"

6. In a new tab, under "Use following addresses DNS servers" fill in: "Preferred DNS server" and " Alternative DNS server".

   Fill in the "Preferred DNS server" and "Alternative DNS server" items, click "OK"

7. Check "Verify settings on exit".
8. Click the "OK" button and restart your computer.

Common DNS Errors and How to Fix Them

There are several common DNS errors that users periodically encounter:

1. The DNS server is not responding, the DNS address of the server cannot be found.
2. Windows cannot contact the device or resource.
3. No access to DNS server.

If an error occurs, first of all, you need to check if the Internet cable has fallen out of the computer. If everything is fine, try connecting it directly, bypassing the router. If everything works without a router, try rebooting it. There are many varieties of these devices, but in in general terms All settings are almost the same. How to do this, consider the example of one of the models of the well-known brand TP-Link:

1. Type in address bar browser 192.168.0.1 and click search.

   Enter the IP address of the router in the address bar of the browser

2. In the window that appears, enter your username and password (the default is "admin", if the password has been changed, you must remember it).

   Enter your username and password correctly

3. Click the Login button.
4. In the router control panel that appears, select " System Tools».

   In the menu that opens, select "System Tools"

5. The following window will open, in it click the "Reboot" item.

   In the "System Tools" section, click "Restart"

6. In the next tab, the message “Press this button to reboot the device” will appear, press the button, confirm the reboot, wait.

After rebooting the router, the error should disappear. Elementary device failures happen quite often, do not rush to panic, any problem can be solved on your own.

Quite often the cause various errors DNS is a problem with your ISP's servers. If you have already taken the steps listed above, but the error message does not disappear - call your provider, the reason may lie in incorrect work its DNS server.

If the provider's equipment is working, the router is working, the network is available, and the browser continues to give an error, the following actions will help:

• ask your friends and download on removable media antivirus utility KVRT, scan your computer, remove malicious codes;
• set the DNS address, as described in the previous part of the article;
• update network card drivers.

How to determine the IP address of a website from a domain name

Sometimes there are situations in which it is necessary to find out the IP address of the site. There is nothing difficult in this. The simplest way is to install browser add-ons. Take as an example Mozilla browser Firefox.

Your course of action:

1. Go to the browser settings, select the "add-ons" item.

   In the extension installation window, click the Add to Firefox button

Shape icon the globe will appear in the search bar top panel browser. To determine the IP address of the desired site, just open its page. Hover your mouse over the icon and press the left button.

You will find out the IP address of the site by clicking on the IP finder icon

Another way to set the site address is using Windows tools:

Both methods are quite simple to perform, but in the second option, be careful - do not rush, enter the command and resource names correctly.

Comfort and convenience when using the Internet largely depends on you. With a minimum of effort, you will get rid of many problems and get the opportunity to enter a new, more high level network surfing. Getting around the shortcomings that are common among the DNS servers of our providers is very easy. Switch to alternative DNCs.

So, here DNS is one of the fundamental things on which the work of the entire Internet is built. This abbreviation stands for Domain Name System, which means domain name system.

this question (device domain system names) I already touched upon when I talked about that, but only in passing. Today I want to talk about the role of DNS servers in the operation of sites and the entire Internet as a whole.

Why are DNS servers needed and what is it?

The domain name system operates with full-fledged names (Latin letters, numbers, dashes and underscore allowed during their formation)..120.169.66 is not very informative) and it is easier to operate with them.

The latter applies specifically to human factor, because it is still more convenient for machines to use IP addresses, which they do. can get from the DNS server.

It is on these DNS servers (sometimes they are also called NS from the Name Server, i.e. name server) and the entire Internet is supported (like a flat world on three whales standing on a turtle). which does not require the direct participation of a person in its work (set it up - it plows in 24/7 mode). And there are a lot of such DNS servers on the network.

How does DNS work and what does the Hosts file have to do with it?

At the dawn of the Internet DNS didn't exist at all. But how did the network work then?.120.169.66? For this business then (and now too) the so-called was responsible, where all the hosts of the then small Internet were registered.

Such a file was (and is now) on each user's computer (it is also on yours) connected to the network (see the link above for how to find it).

In the hosts file several thousand lines were written (according to the number of sites on the Internet at that time), in each of which the IP address was first registered, and then the corresponding domain, separated by a space. This is what an entry for my blog would look like if it existed on the web twenty-five to thirty years ago:

109.120.169.66 site

Good luck to you! See you soon on the blog pages site

You can watch more videos by going to

You may be interested

Server - what is it
Buying a domain (domain name) on the example of the registrar Reghouse WHOIS services- information about the domain (whose it is, what is its age and history, when it is released) or IP address
Hosts file - what it is, where it is located in Windows, what a webmaster should do with it and how to remove virus entries from it
Checking for employment and buying a domain name, how domain registrars and resellers differ and what is WHOIS How to register a domain (buy a domain name from a registrar)

DNS Internet Filter is an Internet service that allows you to filter unwanted servers on the Internet by their domain names. For example, the site www.virus.org - spreads a virus on the computers of users who visit it. If such a user has a DNS-based Internet filter connected, then instead of an infected site, the user will see a message about blocking a dangerous site. The same will happen with a fake website that will try to steal your social media passwords or credit card numbers.

Another area of ​​application of such filters is children's safety on the Internet. Such services allow you to block not only sites with pornography and violence, but also sites containing any links to them. As a bonus, some internet filters can also block annoying internet ads.

A significant advantage is that there is no need to install any software on the protected computer. All you need to do is to set it in the settings network connection computer desired address DNS server, which will act as a filter.

How dns filter works

Very simplified, it looks like this:

1. The user enters the address of the site in the browser line.
2. The computer converts the symbolic address of the site into an ip address using dns service. Thus, a request with the site address is sent to the filter server.
3. If the site address on the dns server is not in the blacklist, then the ip-address of the server serving the site is transmitted to the user's computer and the user receives the site content in the browser window.
4. If the site address is in the black list of the dns server, then the user is given the ip address of a special web server that displays a message about blocking the site in the user's browser window.

As you can see, everything is simple and generally quite effective. The scope of these services is not limited to home PCs. If you are an enterprise network administrator, then these services will become additional protection your network, just configure the resolution of your network's Internet addresses through a dns filter. You can also filter on mobile devices such as smartphones or tablets.

Public DNS Filters

Today there are many such services and most of them offer filtering capabilities for free. Many antivirus companies there are private and public dns filters. Next, I will list the most famous public services that have already been tested by time and people.

1. Public DNS google server. This server, in fact, was not created for filtering, but to speed up the Internet due to very fast resolving, but in addition, public dns from Google also filters phishing and malicious servers. Besides given server can work over IPv6
   Google DNS Addresses:
   IPv4 8.8.8.8, 8.8.4.4
   IPv6 2001:4860:4860::8888, 2001:4860:4860::8844
2. OpenDNS- perhaps the oldest DNS filter. There are paid and free features. Able to correct incorrectly typed site addresses, and also shows a page with search and advertising, if the address could not be corrected automatically. Has profiles for Parental Control available for free after registration. Without registration, fast resolution and filtering of malicious servers is declared.
   OpenDNS DNS Addresses:
   208.67.222.222
   208.67.220.220
   https://www.opendns.com/
3. SkyDNS— one of the first domestic services. There are paid and free plans. It is possible to manually create black and white lists, block sites by category, block ads, and statistics. On the free plan the possibilities for manual blocking have been cut, statistics for only a month, etc. Without registration, the service filters only phishing and malicious sites. There are opportunities parental control by filtering dangerous sites and replacing search engines with Safe search from SkyDNS. Account management on the website or through an application installed on a computer running Windows.
   SkyDNS DNS address:
   193.58.251.251
   http://www.skydns.ru
4. Yandex.DNS. Public DNS filter from the domestic search giant. No registration required. Assumes 3 usage scenarios 1) Fast and reliable resolution 2) Resolving + filtering dangerous servers 3) Resolving + filtering dangerous servers + role control. Data is used to compile black lists search engine. The server supports IPv6.
   Yandex DNS server addresses:
   Basic IPv4 77.88.8.8, 77.88.8.1, IPv6 2a02:6b8::feed:0ff, 2a02:6b8:0:1::feed:0ff
   Secure IPv4 77.88.8.88, 77.88.8.2, IPv6 2a02:6b8::feed:bad, 2a02:6b8:0:1::feed:bad
   Family IPv4 77.88.8.7, 77.88.8.3, IPv6 2a02:6b8::feed:a11, 2a02:6b8:0:1::feed:a11
   http://dns.yandex.ru/advanced/
5. Norton Connect Safe. Secure servers Symantec DNS. As in the case of Yadnex, it does not require registration for personal use. It has a similar structure of servers in 3 categories: 1) Safe 2) Safe and porn 3) Safe, Porn and other undesirable for children.
   Norton DNS Addresses:
   Secure: 199.85.126.10, 199.85.127.10
   Safe+Porn: 199.85.126.20, 199.85.127.20
   Parental control: 199.85.126.30, 199.85.127.30
   https://dns.norton.com/
   

This list is by no means exhaustive, but these are, in my opinion, the most interesting and popular servers, which should be used as the first line of filtering and home defense computer network or enterprise network. It is important to understand that the use of these services in no way excludes the need to use modern and relevant anti-virus tools, such as Kaspersky Anti-Virus, for example;).

Which dns filter to choose?

You may be wondering which of these services to choose. From personal experience I can recommend the following selection algorithm:

• By speed: SkyDNS, Google, Yandex
• By functionality SkyDNS, OpenDNS
• Security Yandex, Norton, Google

To test the performance of the DNS servers described above, I used the DNS Benchmark utility, the results are sorted by response time.

As you can see from my network, SkyDNS was the fastest, followed by Google, then Yandex servers (With full filters for parental control). The situation from your network or at other times of the day may be different. It's best to test each service yourself! Each service has its own blacklisting algorithms, so there is a possibility false locks reliable sites. In my opinion, Yandex servers look like a good golden mean.

Write in the comments what you think about this! I will be glad to links to other similar services and authoritative (supported by arguments) critical statements on the topic.