nanog mailing list archives
Re: Geo location to IP mapping
From: Michael.Dillon () btradianz com
Date: Tue, 16 May 2006 10:26:27 +0100
I just tried that, says I'm 100 miles south of where I really am. That's
quite a long way out in a small country like England.
I live in London and use BT Broadband. But geolocation shows me being in Ipswich up in East Anglia, a long way from London. I assume this is because the geolocation only knows that I use an IP address from a DHCP pool managed in Ipswich. They don't know anything about BT's own extensive network, and in the case of DSL using tunnels and DHCP servers, the real topology becomes entirely invisible. The end result is that most of England's population lives in Ipswich. Eat your heart out Alan Partridge. A few years ago, while working at a different company in London, I had a New York IP address because our company's internal network Internet gateway was in New York. Then they changed things around so that we used a gateway in London for all the European offices. But that meant that colleagues in France, Germany, etc... would all show up as being located in London. Nowadays, I use a VPN to work from home. The VPN software knows of multiple tunnel endpoint servers so if there is a problem with the UK server it fails over to a server in the USA. My IP address on the Internet comes from the NAT server at the Internet gateway. Depending on where the tunnel endpoint is, it could be a US address or a UK address. 100% accurate geolocation is not achievable but if you understand the issues then you can better make a decision how to apply geolocation services to your own problem. It may work well enough for some things. --Michael Dillon
Current thread:
- Re: Geo location to IP mapping, (continued)
- Re: Geo location to IP mapping Ashe Canvar (May 15)
- Re: Geo location to IP mapping Roland Perry (May 15)
- AW: Geo location to IP mapping Gunther Stammwitz (May 15)
- Re: Geo location to IP mapping Edward B. DREGER (May 15)
- Message not available
- Re: Geo location to IP mapping Edward B. DREGER (May 15)
- Re: Geo location to IP mapping Petri Helenius (May 15)
- Re: Geo location to IP mapping Bill Woodcock (May 15)
- Re: Geo location to IP mapping Hank Nussbacher (May 15)
- Re: Geo location to IP mapping Roland Perry (May 16)
- Re: Geo location to IP mapping Valdis . Kletnieks (May 16)
- Re: Geo location to IP mapping Michael . Dillon (May 16)
- Re: Geo location to IP mapping Roland Perry (May 16)
- Re: Geo location to IP mapping Jeff Rosowski (May 17)
- Re: Geo location to IP mapping Michael . Dillon (May 16)
- Re: Geo location to IP mapping Alain Hebert (May 15)
- Re: Geo location to IP mapping Valdis . Kletnieks (May 15)
- Re: Geo location to IP mapping Martin Hannigan (May 15)
- Message not available
- Message not available
- Re: Geo location to IP mapping Martin Hannigan (May 15)
- Re: Geo location to IP mapping sgorman1 (May 15)
- network triangulation (Re: Geo location to IP mapping) Edward B. DREGER (May 15)
- Re: Geo location to IP mapping Marshall Eubanks (May 15)