IP Address Lookup

Query all network coordination centers (NCC) for the netblock holder of any IP-address

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What is behind an IP address?

Lookup the holder and contact information of a given IP-address. This tool returns the registered IP address block together with information of the holder and contact information. IP addresses are administered and registered by different Network Coordination Centres (NCC), depending on the global region of the applicant.

Click here X-(35.172.217.40) to lookup your IP Address.

Result

Network Coordination Centers (NCC)

IP addresses are administered and registered by different Network Coordination Centres (NCC):

• RIPE NCC - Europe, the Middle East, and Central Asia

  The RIPE Database contains registration details of IP addresses and AS numbers originally allocated by the RIPE NCC.
  http://www.ripe.net

• ARIN - North America

  The ARIN service region includes the USA, Canada, and many Caribbean and North Atlantic islands
  http://www.arin.net

• APNIC - Asia/Pacific Region

  http://www.apnic.net

• LACNIC - Latin America and some Caribbean Islands

  http://www.lacnic.net

• AfriNIC - Africa Region

  AfriNIC is a non-government, not-for-profit, membership based organization, based in Mauritius to serve African Internet Community. AfriNIC is the Regional Registry for Internet Number Resources for Africa.
  http://www.afrinic.net

Special IP Address Blocks

Special IP Addresses

• 0.0.0.0/8 reserved for self-identification
• 127.0.0.0/8 is reserved for Loopback
• 169.254.0.0/16 reserved for Link Local
• 192.88.99.0/24 reserved for 6to4 Relay Anycast
• 198.18.0.0/15 reserved for Network Interconnect Device Benchmark Testing
• 255.255.255.255 is reserved for "limited broadcast" destination address

Reserved for Private-Use Networks

The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:

• 10.0.0.0 - 10.255.255.255 (10/8 prefix)
• 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
• 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

The first block is refered to as "24-bit block", the second as "20-bit block", and to the third as "16-bit" block. Note that (in pre-CIDR notation) the first block is nothing but a single class A network number, while the second block is a set of 16 contiguous class B network numbers, and third block is a set of 256 contiguous class C network numbers.

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