Not much use if you are with Plusnet, and do not live in Sheffield
3 of the 4 say I am in Sheffield wheres I am S of London!
The fourth simply says I am in the UK.
2 of those saying Sheffield give a Lat and Long Fix - but one (both?) do not know exactly where Sheffield is -- 53.37 v 51.5 -1.5 v -0.13.
(Plusnet is a small UK ISP based in Yorkshire, actually owned by British Telecom. I assume Plusnet has registered all its dynamic IPs to Sheffield )