03456 UK-wide numbers
Ofcom’s numbering data lists 100 number ranges starting 03456, allocated to 20 providers. The largest holder is TalkTalk Communications Limited, with 25% of them. Non-geographic numbers used by public bodies, charities and businesses that want one number for the whole country. 030 is used by public sector and not-for-profit organisations.
Who were 03456 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider29 ranges
- TalkTalk Communications Limited25 ranges
- BT15 ranges
- Vodafone Ltd (C&W)10 ranges
- TTNC Limited3 ranges
- Six Degrees Technology Group Limited2 ranges
- Nexus Telecommunications Limited2 ranges
- Premier Voicemail Ltd1 range
- Digital Mail Limited1 range
- Telecoms World Direct Limited1 range
- GCI Network Solutions Limited1 range
- Gamma Telecom Holdings Limited1 range
+ 9 more
Range status
How Ofcom lists the ranges starting 03456.
Allocations by year
Explore by the next digit
Each block below starts 03456. Pick one to narrow it down.
What a 03456 number tells you
What it is
Non-geographic numbers used by public bodies, charities and businesses that want one number for the whole country. 030 is used by public sector and not-for-profit organisations.
What it costs
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Watch out for
Banks and government departments often use 03 numbers, so scammers spoof them. If a caller asks for security details, hang up and call the number on your card or statement.
03456 numbers: common questions
Who owns 03456 numbers?
Ofcom allocated the ranges starting 03456 to TalkTalk Communications Limited, BT, Vodafone Ltd (C&W) and others. Numbers can be moved between providers, so this shows who the range was originally given to – not who is using a particular number today.
How do I call a 03456 number from abroad?
Replace the leading 0 with +44. For example, a number starting 03456 becomes +44 3456 followed by the rest of the number.
How much does it cost to call a 03456 number?
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Is a call from a 03456 number a scam?
Banks and government departments often use 03 numbers, so scammers spoof them. If a caller asks for security details, hang up and call the number on your card or statement. Check the full number on Who’s Calling to see if it belongs to a verified business and what other people have reported.
Did a 03456 number call you?
Check the full number to see if it belongs to a verified UK business and what other people have reported.
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