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MarkosWeb Tools

Free DNS

Free Public DNS System resolution service. Simply configure your DNS to use the IP addresses:,

Is site down

Our powerful site monitoring tool gives you data on the up and down time of your site, and allows you to see if a site is down for everyone or just for you.

Google algorithm change impact checker

Verify using your domain name below if your website is impacted by known Google updates.

Title changes history

View the history of a website <title> meta tag. There is a strong opinion that the title of the domain main page has an essential, though minor importance for the positioning of pages in the SERP.

Indexed pages (graph)

Number of of URLs search engines were able to crawl index. The amount of indexed pages first of all indicates the domain weight. Web masters must strive to make the number of indexed pages close to the actual number of pages.

Backward links (graph)

Using selective queries we calculate number of backward links to domains that we list on MarkosWeb and follow historical progress of this data

Hostlinks (graph)

Shows home page's external (incoming) and internal (outgoing) links. Inner links from the main page of the site show the most important sections of the site and serves as one of the most important factors of domain ranking as a whole. External links from the main page tie the site with other sites and determines the site's niche.

Network tools


The ping utility uses the ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams (pings) have an IP and ICMP header, followed by a "struct timeval" and then an arbitrary number of "pad" bytes used to fill out the packet.


The Internet is a large and complex aggregation of network hardware, connected together by gate-ways. Tracking the route one's packets follow (or finding the miscreant gateway that's discarding your packets) can be difficult.


dig (domain information groper) is a flexible tool for interrogating DNS name servers. It performs DNS lookups and displays the answers that are returned from the name server(s) that were queried. Most DNS administrators use dig to troubleshoot DNS problems because of its flexibility, ease of use and clarity of output. Other lookup tools tend to have less functionality than dig.

NS lookup

Nslookup is a program to query Internet domain name servers. Nslookup has two modes: interactive and non-interactive. Interactive mode allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain.


host is a simple utility for performing DNS lookups. It is normally used to convert names to IP addresses and vice versa. When no arguments or options are given, host prints a short summary of its command line arguments and options.

MX records

hostMX is a simple utility for performing DNS lookups for MX records.


Nmap (“Network Mapper”) is an open source tool for network exploration and security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts.