03300 UK-wide numbers
Ofcom’s numbering data lists 100 number ranges starting 03300, allocated to 45 providers. The largest holder is Thumbtel Ltd, with 26% 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 03300 ranges given to?
Providers Ofcom allocated these number ranges to.
- Thumbtel Ltd26 ranges
- Gamma Telecom Holdings Limited12 ranges
- Not allocated to a provider7 ranges
- Barritel Limited6 ranges
- (AQ) LIMITED2 ranges
- Vodafone Ltd (C&W)2 ranges
- Voiceflex Limited2 ranges
- Magrathea Telecommunications Limited2 ranges
- TelXL Limited2 ranges
- Lumen Technologies UK Limited2 ranges
- IOVOX Limited2 ranges
- Invade International Ltd1 range
+ 34 more
Range status
How Ofcom lists the ranges starting 03300.
Allocations by year
Explore by the next digit
Each block below starts 03300. Pick one to narrow it down.
What a 03300 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.
03300 numbers: common questions
Who owns 03300 numbers?
Ofcom allocated the ranges starting 03300 to Thumbtel Ltd, Gamma Telecom Holdings Limited, Barritel Limited 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 03300 number from abroad?
Replace the leading 0 with +44. For example, a number starting 03300 becomes +44 3300 followed by the rest of the number.
How much does it cost to call a 03300 number?
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Is a call from a 03300 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 03300 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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