BT's line checker at dslchecker.bt.com does a great job of telling you via which roadside cabinet your phone line is routed - as long as your line isn't unbundled. I'm trying to find out the cabinet number for a TalkTalk line, as BT's checker has no information for this particular phone number. I've trawled the TalkTalk website, and spoken to their tech support line, but they can't tell me this info. As the infrastructure surely still "belongs" to Openreach at some level, does anyone know how I can go about finding out the cabinet number for this line?
The exchange is Chipping Sodbury (SSCSY) in South Gloucestershire.