Fellow networkers,
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Team Cymru is happy to announce the availability of a public whois
server dedicated to mapping IP numbers to ASNs, located at
whois.cymru.com.� You can find the link to this tool at:
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http://www.cymru.com/BGP/whois.html
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This link has been added to our main BGP data page available at:
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http://www.cymru.com/BGP/index.html
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We have also extended the functionality of this daemon to support BULK
IP submissions for those who wish to further optimize their queries with
netcat.
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Following is a quick overview of how to use it:
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$ whois -h whois.cymru.com <IP>
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Where <IP> is replaced by the IP you'd like to map, like so:
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$ whois -h whois.cymru.com 4.2.2.1
��� ASN |�������������� IP | Name
�� 3356 |��������� 4.2.2.1 | LEVEL3 Level 3 Communications
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You can also include port information, and/or timestamps in your
queries.� Be sure to include quotes around your queries, or the daemon
will interpret your request as multiple lines:
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$ whois -h whois.cymru.com "4.2.2.1 -0600 GMT"
��� ASN |�������������� IP |����������� Info | Name
�� 3356 |��������� 4.2.2.1 |������ -0600 GMT | LEVEL3 Level 3
Communications
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For instructions on how to submit BULK queries via netcat, simply issue
the following command:
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$ whois -h whois.cymru.com help
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We hope you find this tool useful.� Stay tuned for more features!�
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If you have any comments or suggestions as to how we might improve this
service, feel free to let us know!
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Thanks,
Steve, for Team Cymru
http://www.cymru.com