Members Area

Go to the members area to see your test history and manage your alerts.

Latest news

July 2014 -New SPF lookup test to see the Sender Policy Framework records for a domain.

June 2014 - Become a free member and get two network alerts. You can set alerts on IP blacklisting and domain changes.

May 2014 - Updated my IP Address extension. Now with IP change alert and IP history.

April 2014 - New Top Level Domain Report. See detailed information like top domains, whois information and root DNS servers for every TLD.

February 2014 - New IP Flag extension for Chrome and Opera. Displays country flag for current website's server.

November 2013 - We have built a new extension for Chrome based on our ip and domain information. Blockfilter is an adult and spyware filtering extension protecting your browser from sensitive content.

July 2013 - The popular browser extension IP and Domain information is now available for Opera.

April 2013 - New chrome, firefox and safari extensions available, create a QR Code from the current url in your favorite browser. Fast and easy!

March 2013 - Download here the IP Address and Domain add-on for Firefox. This add-on displays detailed IP and domain information about the current website.

The ultimate online investigation tool!
See detailed information about every IP Address, Domain Name and Provider.

examples: verizon - - - 2a01:4f8:d0a:2001::2 - as24940

Network Tools

IP Geo Lookup

Show the geographical location for domain name and IP address (IPv4 and IPv6).

Mac Address Lookup

Lookup a MAC address to its vendor or look which MAC addresses belong to a vendor.


Find out how long it takes for packets to reach its destination.

TCP Ping

Ping an IP address over a TCP connection. Works just like Ping.


Determine the route taken by packets across an IP network (IPv4 or IPv6).

Whois Lookup

See registration data related to a domain, IP address (IPv4 and IPv6) or AS number.


Email & DNS Tools

DNS Blackhole List

Check to see if an IP address is listed with nearly 100 DNS based anti-spam databases.

DNS Lookup

Query the DNS server on all possible records.

Email Test

Performs a DNS query for the MX records and checks all SMTP servers for accepting email.

SEO Tools

Domain Neighbors

Find other websites hosted on the same web server.

Reverse Tinyurl

See what is behind every tiny URL. Click directly on the original URL instead of the short one.

W3C Validator

This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML.