Geo locate change for IP ?

Hi guys Something odd has happened and I’m not sure how to sort. One of our public prefixes, 205.174.3.0/24 issued from ARIN has suddenly had its geo changed and now everyone accessing the internet from it is showing up as a UK IP, London specifically. We announce this and every other prefix we have out all of our peers globally and are pretty mystified on how this happened and how to resolve. Any help is appreciated. Thanks Jason