Calls from 073 789 XXXXX — UK mobile
Block 073 789 XXXXX is allocated by Ofcom to Hutchison 3G UK (allocated 2016).
073 789 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 0737891234 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 — 073 789 XXXXX — was allocated by Ofcom to Hutchison 3G UK in 2016. Hutchison 3G UK either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 073 789 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 073 789 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 073 789 XXXXX-style ringbacks are not unheard of. Don't return missed calls from unknown numbers without checking them first.
If a 073 789 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 073 789 XXXXX
Is 073 789 XXXXX a real UK phone number?
Yes. 073 789 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 Hutchison 3G UK for use on the UK public telephone network.
Who owns the 073 789 XXXXX number block?
073 789 XXXXX is currently allocated to Hutchison 3G UK 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 073 789 XXXXX mobile number is on?
Not from the prefix alone. UK mobile numbers have been portable between networks since 1999, so even though 073 789 XXXXX was originally allocated to Hutchison 3G UK, 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 073 789 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 073
Try a different block within the same UK area code:
