Calls from 01277 663 XXX — Brentwood
Block 01277 663 XXX is allocated by Ofcom to Lumen Technologies UK Limited, on the Brentwood exchange (allocated 2012).
01277 663 XXX is a number block in Brentwood, in the historic county of Essex, an area with a population of approximately 76,800. Standard landlines in this area use the format 01277 663123, with the first part being the dialling code and the rest being the local number.
This block — 01277 663 XXX — was allocated by Ofcom to Lumen Technologies UK Limited in 2012. Lumen Technologies UK Limited either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 01277 663 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.
Calls from 01277 663 XXX numbers that ask you to 'press 1' or to call back a different number should be treated with caution. This is a classic premium-rate trap — the call-back number is often in the 09xx range and costs several pounds per minute. Never call back an unfamiliar number you've been instructed to dial.
If a 01277 663 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 01277 663 XXX
Is 01277 663 XXX a real UK phone number?
Yes. 01277 663 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 Lumen Technologies UK Limited for use on the UK public telephone network.
Who owns the 01277 663 XXX number block?
01277 663 XXX is currently allocated to Lumen Technologies UK 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 01277 663 XXX number based?
01277 663 XXX is associated with Brentwood. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a 01277 663 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 01277 663 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 01277
Try a different block within the same UK area code:
