Netblock Owner Search

by Damiaan Peeters 30. December 2008 11:33

Every tried to find out who is hosting a web site?  You can't be sure, but you might get some idea when you look at the organization who supplied the IP address for the web site.

If you want a web site, you need a server and an Internet connection.  To have an active Internet connection, you need of course a IP address.

The IANA delegates Internet resources to other regional organizations called a Regional Internet Registry. IANA manages also the DNS Root and information about top level domains (as country codes and .com, .org and .biz).  If you ever have 2 minutes: you should read the "IANA is attacking me" page on their web site. 

Like mentioned before, it is not IANA allocating the IP Addresses to your web hosting company.  There are 5 regional organizations called RIRs allocating the IP addresses to your web hosting company.  Currently there are 5 RIRs.

  • APNIC - Asia Pacific NIC
  • RIPE NNC - Europe NIC
  • ARIN - American NIC
  • AfriNIC African NIC
  • LACNIC Latin American and Caribbean Internet Addresses Registry

Instead of performing a reverse DNS lookup, you can look up more information on one of the NIC’s web sites above to determine the owner of the "netblock" that IP is related to.

Troubleshoot Network Connectivity and Reset TCP/IP Windows XP

by Damiaan Peeters 18. April 2008 17:02

I regularly have some clients with network problems.  Using this article I solved a lot of problems.  The article How to troubleshoot TCP/IP connectivity with Windows XP describes a lot of useful tools to determine where the network problem exists.

If you suspect problems with the Tcp/IP stack.  You can use the article on TechNet: Reset the Internet Protocol (TCP / IP) stack in windows XP.  Because the TCP/IP stack is considered a core component of the Windows XP operating system, you cannot remove it.  You need to follow the instructions given in the article.  Being...

netsh int ip reset c:\resetlog.txt

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