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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Finding ASN from IP address
On Thu, Oct 09, 2003 at 09:49:32AM -0700, Avleen Vig wrote: > > I want to create a mapping of IP addresses to ASN, for a specific like > of IP addresses. Eg: > 1.2.3.4 > 12.34.56.78 > > etc, gathered from my system logs. > > What is the best way of doing this? Team Cymru is offering a IP to ASN Whois service: ***************** Fellow networkers, � 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: � http://www.cymru.com/BGP/whois.html � This link has been added to our main BGP data page available at: � http://www.cymru.com/BGP/index.html � 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. � Following is a quick overview of how to use it: � $ whois -h whois.cymru.com <IP> � Where <IP> is replaced by the IP you'd like to map, like so: � $ whois -h whois.cymru.com 4.2.2.1 ��� ASN |�������������� IP | Name �� 3356 |��������� 4.2.2.1 | LEVEL3 Level 3 Communications � 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: � $ 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 � For instructions on how to submit BULK queries via netcat, simply issue the following command: � $ whois -h whois.cymru.com help � We hope you find this tool useful.� Stay tuned for more features!� � If you have any comments or suggestions as to how we might improve this service, feel free to let us know! � Thanks, Steve, for Team Cymru http://www.cymru.com -- Stephen Gill
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