In reply to a post by jimbof:

Ookla use Maxmind's GeoIP service to attempt to locate you and direct you to a local server. Often pointless - eg my ISP's IP addresses are in Leeds but all their connectivity is in London, and I'm in Norwich. The best place for your IP address to look up to is where your ISP picks up connectivity to the rest of the world, not where you are physically located.

You can submit a correction to Maxmind if you like. I "corrected" my IP address to Telehouse in London (instead of Norwich or Leeds) which gives the best results for me.

Correction site is here:
https://www.maxmind.com/en/geoip-location-correction

Thanks for that link. Having conducted an IP location search, although it gives the IP correct ownership, i.e., Cadence networks (FACTCO), it locates me on all IP location searches in San Jose, California. This, no doubt is where the IP is registered. This outcome is not unusual. I recall doing traceroutes when I was with Vodafone. Some of their step IPs were allegedly in the USA. lol. Before I opted for a static IP my dynamic IP was often located by the Thames in Hammersmith.


I have submitted a correction using your link. I will be interested to see if that makes any difference to anything, down the line. Incidentally, they used my IPv6 address.

In reply to a post by KilgoreTrout:

Does this apparent relocation of my static ip suggest that my point of entry into City Fibre's national network has also changed? It's hard to tell using Traceroute because City Fibre IPs aren't shown amongst the steps.

Cityfibre is a wholesale layer 2 network. That means that what it carries over its network are ethernet frames. It doesn't care whether those ethernet frames contain IP datagrams (IPv4 or IPv6), and does not look at IP addresses. The IP addresses are allocated by the ISP that Cityfibre connects to.

That's why you won't see Cityfibre anywhere in your traceroutes: traceroute works at layer 3 and shows only router hops. The whole link from ISP to your home is a single hop as far as routers are concerned.

If it helps, you can think of the Cityfibre connection as a very long ethernet cable that runs from your home all the way to the ISP. That's not actually a bad analogy: it does work like a point-to-point connection.

(In reality, packets for multiple customers are carried over the same cable when it hits the ISP. Each customer is a different VLAN, and each ethernet packet carries a VLAN tag to distinguish the traffic. These VLANs are still separate and unaware of each other, like ships that pass in the night)