American Registry for Internet Numbers (ARIN)
Whois server : whois.arin.net
Web-based query : http://www.arin.net/whois
ARIN's database contains information for all IP number ranges,
and contains detailed information for IP numbers allocated in North
and South America. In cases where the address range is allocated
from ARIN to another registry, the ARIN database will refer to the
other registry for more specific information.
Some address ranges are reserved by IANA, and should not be in
general use on the Internet. Incidents involving IANA reserved
address space may be a result of IP address spoofing. Contacting
IANA regarding incidents involving IANA reserved address space is
usually not productive.
RIPE NCC
Whois server : whois.ripe.net
Web-based query : http://www.ripe.net/db/whois.html
The RIPE NCC database contains information about domain names and
IP numbers used in the European community.
IP number ranges allocated to RIPE NCC can be obtained using the
following query to the ARIN Whois database:
$ whois -h whois.arin.net ripe.
There may be cases where the RIPE NCC database refers to a more
specific information source to obtain contact information.
Asia Pacific Network Information Center (APNIC)
Whois server : whois.apnic.net
Web-based query : http://www.apnic.net/apnic-bin/whois2.pl
The APNIC database contains information about IP numbers used in
the Asia Pacific region.
IP number ranges allocated to APNIC can be obtained using the
following query to the ARIN Whois database:
$ whois -h whois.arin.net apnic.
There may be cases where the APNIC database refers to a more
specific information source to obtain contact information.
Corrections or comments regarding this document should be sent in
email to cert@cert.org.
| IP Number Start | IP Number End | WHOIS server |
| 0.0.0.0 | 2.255.255.255 | IANA-reserved |
| 3.0.0.0 | 4.255.255.255 | whois.arin.net |
| 5.0.0.0 | 5.255.255.255 | IANA-reserved |
| 6.0.0.0 | 6.255.255.255 | whois.arin.net |
| 7.0.0.0 | 7.255.255.255 | IANA-reserved |
| 8.0.0.0 | 9.255.255.255 | whois.arin.net |
| 10.0.0.0 | 10.255.255.255 | IANA-reserved |
| 11.0.0.0 | 13.255.255.255 | whois.arin.net |
| 14.0.0.0 | 14.255.255.255 | IANA-reserved |
| 15.0.0.0 | 22.255.255.255 | whois.arin.net |
| 23.0.0.0 | 23.255.255.255 | IANA-reserved |
| 24.0.0.0 | 24.131.255.255 | whois.arin.net |
| 24.132.0.0 | 24.135.255.255 | whois.ripe.net |
| 24.136.0.0 | 26.255.255.255 | whois.arin.net |
| 27.0.0.0 | 27.255.255.255 | IANA-reserved |
| 28.0.0.0 | 30.255.255.255 | whois.arin.net |
| 31.0.0.0 | 31.255.255.255 | IANA-reserved |
| 32.0.0.0 | 36.255.255.255 | whois.arin.net |
| 37.0.0.0 | 37.255.255.255 | IANA-reserved |
| 38.0.0.0 | 38.255.255.255 | whois.arin.net |
| 39.0.0.0 | 39.255.255.255 | IANA-reserved |
| 40.0.0.0 | 40.255.255.255 | whois.arin.net |
| 41.0.0.0 | 42.255.255.255 | IANA-reserved |
| 43.0.0.0 | 57.255.255.255 | whois.arin.net |
| 58.0.0.0 | 60.255.255.255 | IANA-reserved |
| 61.0.0.0 | 61.255.255.255 | whois.apnic.net |
| 62.0.0.0 | 62.255.255.255 | whois.ripe.net |
| 63.0.0.0 | 63.255.255.255 | whois.arin.net |
| 64.0.0.0 | 64.255.255.255 | whois.arin.net |
| 65.0.0.0 | 127.255.255.255 | IANA-reserved |
| 128.0.0.0 | 139.19.255.255 | whois.arin.net |
| 139.20.0.0 | 139.29.255.255 | whois.ripe.net |
| 139.30.0.0 | 140.255.255.255 | whois.arin.net |
| 141.0.0.0 | 141.85.255.255 | whois.ripe.net |
| 141.86.0.0 | 145.223.255.255 | whois.arin.net |
| 145.224.0.0 | 145.254.255.255 | whois.ripe.net |
| 145.255.0.0 | 149.131.255.255 | whois.arin.net |
| 149.132.0.0 | 149.134.255.255 | whois.ripe.net |
| 149.135.0.0 | 149.201.255.255 | whois.arin.net |
| 149.202.0.0 | 149.204.255.255 | whois.ripe.net |
| 149.205.0.0 | 149.205.255.255 | whois.arin.net |
| 149.206.0.0 | 149.251.255.255 | whois.ripe.net |
| 149.252.0.0 | 150.253.255.255 | whois.arin.net |
| 150.254.0.0 | 150.254.255.255 | whois.ripe.net |
| 151.0.0.0 | 151.2.255.255 | whois.arin.net |
| 151.3.0.0 | 151.5.255.255 | whois.ripe.net |
| 151.6.0.0 | 151.12.255.255 | whois.arin.net |
| 151.13.0.0 | 151.82.255.255 | whois.ripe.net |
| 151.83.0.0 | 151.90.255.255 | whois.arin.net |
| 151.91.0.0 | 151.93.255.255 | whois.ripe.net |
| 151.94.0.0 | 151.94.255.255 | whois.arin.net |
| 151.95.0.0 | 151.95.255.255 | whois.ripe.net |
| 151.96.0.0 | 160.43.255.255 | whois.arin.net |
| 160.44.0.0 | 160.63.255.255 | whois.ripe.net |
| 160.64.0.0 | 160.215.255.255 | whois.arin.net |
| 160.216.0.0 | 160.220.255.255 | whois.ripe.net |
| 160.221.0.0 | 163.155.255.255 | whois.arin.net |
| 163.156.0.0 | 163.175.255.255 | whois.ripe.net |
| 163.176.0.0 | 163.255.255.255 | whois.arin.net |
| 164.0.0.0 | 164.40.255.255 | whois.ripe.net |
| 164.41.0.0 | 164.127.255.255 | whois.arin.net |
| 164.128.0.0 | 164.143.255.255 | whois.ripe.net |
| 164.144.0.0 | 169.207.255.255 | whois.arin.net |
| 169.208.0.0 | 169.223.255.255 | whois.apnic.net |
| 169.224.0.0 | 171.15.255.255 | whois.arin.net |
| 171.16.0.0 | 171.33.255.255 | whois.ripe.net |
| 171.34.0.0 | 192.70.255.255 | whois.arin.net |
| 192.71.0.0 | 192.71.255.255 | whois.ripe.net |
| 192.72.0.0 | 192.106.143.255 | whois.arin.net |
| 192.106.144.0 | 192.106.147.255 | whois.ripe.net |
| 192.106.148.0 | 192.106.195.255 | whois.arin.net |
| 192.106.196.0 | 192.106.197.255 | whois.ripe.net |
| 192.106.198.0 | 192.161.255.255 | whois.arin.net |
| 192.162.0.0 | 192.162.255.255 | whois.ripe.net |
| 192.163.0.0 | 192.163.255.255 | whois.arin.net |
| 192.164.0.0 | 192.167.255.255 | whois.ripe.net |
| 192.168.0.0 | 192.255.255.255 | whois.arin.net |
| 193.0.0.0 | 195.255.255.255 | whois.ripe.net |
| 196.0.0.0 | 196.255.255.255 | whois.arin.net |
| 197.0.0.0 | 197.255.255.255 | IANA-reserved |
| 198.0.0.0 | 198.17.116.255 | whois.arin.net |
| 198.17.117.0 | 198.17.117.255 | whois.ripe.net |
| 198.17.118.0 | 200.255.255.255 | whois.arin.net |
| 201.0.0.0 | 201.255.255.255 | IANA-reserved |
| 202.0.0.0 | 203.255.255.255 | whois.apnic.net |
| 204.0.0.0 | 209.255.255.255 | whois.arin.net |
| 210.0.0.0 | 211.255.255.255 | whois.apnic.net |
| 212.0.0.0 | 213.255.255.255 | whois.ripe.net |
| 214.0.0.0 | 216.255.255.255 | whois.arin.net |
| 217.0.0.0 | 217.255.255.255 | whois.ripe.net |
| 218.0.0.0 | 218.255.255.255 | whois.apnic.net |
| 219.0.0.0 | 219.255.255.255 | whois.apnic.net |
| 220.0.0.0 | 223.255.255.255 | IANA-reserved |
| 224.0.0.0 | 239.255.255.255 | whois.arin.net |
| 240.0.0.0 | 255.255.255.255 | IANA-reserved |
This document is available from:
http://www.cert.org/tech_tips/whois_by_ipaddr.html
CERT/CC Contact Information
Email: cert@cert.org
Phone: +1 412-268-7090 (24-hour hotline)
Fax: +1 412-268-6989
Postal address:
-
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Software Engineering Institute
Carnegie Mellon University
Pittsburgh PA 15213-3890
U.S.A.
CERT/CC personnel answer the hotline 08:00-17:00 EST(GMT-5) / EDT(GMT-4)
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Using encryption
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information.
Getting security information
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