Calls from 077 737 XXXXX — UK mobile
Block 077 737 XXXXX is allocated by Ofcom to EE (allocated 1999).
077 737 XXXXX is a UK mobile number block. UK mobiles use prefixes 071–075 and 077–079, with 076 reserved for radiopagers and 070 for personal-numbering services. A number such as 0777371234 could be active on any of the four UK mobile networks — EE, O2, Vodafone or Three — or any of the dozens of MVNOs (mobile virtual network operators) that lease capacity from them, including Tesco Mobile, Sky Mobile, giffgaff, Smarty, Lebara and Voxi.
This block — 077 737 XXXXX — was allocated by Ofcom to EE in 1999. EE either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 077 737 XXXXX 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 077 737 XXXXX 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 077 737 XXXXX-style ringbacks are not unheard of. Don't return missed calls from unknown numbers without checking them first.
If a 077 737 XXXXX 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 077 737 XXXXX
Is 077 737 XXXXX a real UK phone number?
Yes. 077 737 XXXXX 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 EE for use on the UK public telephone network.
Who owns the 077 737 XXXXX number block?
077 737 XXXXX is currently allocated to EE 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.
Can I tell which network a 077 737 XXXXX mobile number is on?
Not from the prefix alone. UK mobile numbers have been portable between networks since 1999, so even though 077 737 XXXXX was originally allocated to EE, the individual subscriber's number could have been moved to any other UK network. Live network-lookup tools query the central UK porting database to find the current network.
How do I block calls from 077 737 XXXXX?
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 077
Try a different block within the same UK area code:
