Calls from 01437 510 XXX — Haverfordwest
Block 01437 510 XXX is allocated by Ofcom to Linear Telecoms Limited, on the Haverfordwest exchange (allocated 2010).
01437 510 XXX is a number block in Haverfordwest, in the historic county of Pembrokeshire, Wales, an area with a population of approximately 14,596. Standard landlines in this area use the format 01437 510123, with the first part being the dialling code and the rest being the local number.
This block — 01437 510 XXX — was allocated by Ofcom to Linear Telecoms Limited in 2010. Linear Telecoms Limited either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 01437 510 XXX prefix can be used by many different organisations. You can verify any allocation against Ofcom's National Telephone Numbering Plan, which is updated weekly.
Some calls from blocks like 01437 510 XXX are actually one-ring 'wangiri' calls — the line rings once and disconnects, hoping you'll call back. While wangiri is more common from foreign numbers, UK number-spoofing means 01437 510 XXX-style ringbacks are not unheard of. Don't return missed calls from unknown numbers without checking them first.
If a 01437 510 XXX number called you and you're not sure who it was, the safest steps are: don't return the call until you've verified it (search the full number online first), don't share personal or financial details, and register the number with the Telephone Preference Service (TPS) if it's a marketing call. Persistent unwanted calls can be reported to Ofcom and the ICO. To block a specific number on most UK mobiles and landlines, you can also enable network-level call screening through your provider.
FAQs about 01437 510 XXX
Is 01437 510 XXX a real UK phone number?
Yes. 01437 510 XXX is part of an Ofcom-allocated UK number block — any number starting with that prefix is a real, dialable UK number assigned by Ofcom to Linear Telecoms Limited for use on the UK public telephone network.
Who owns the 01437 510 XXX number block?
01437 510 XXX is currently allocated to Linear Telecoms Limited in Ofcom's National Telephone Numbering Plan. The allocated carrier may operate the numbers directly or sub-allocate them to downstream resellers — both arrangements are normal under UK telecoms rules.
Where is a 01437 510 XXX number based?
01437 510 XXX is associated with Haverfordwest. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a 01437 510 XXX number can technically be used anywhere a CP routes it. For most UK landlines the geographic match still holds.
How do I block calls from 01437 510 XXX?
On most UK smartphones, open the recent-calls list, tap the number, and choose 'Block this caller'. UK landlines from BT, Sky, TalkTalk and Virgin Media include free 'BT Call Protect'-style screening you can enable in your provider's app. You can also register your number with the Telephone Preference Service (TPS) at tpsonline.org.uk to opt out of legitimate UK marketing calls.
Other blocks in 01437
Try a different block within the same UK area code:
