0300 UK-wide numbers
Ofcom’s numbering data lists 1,009 number ranges starting 0300, allocated to 87 providers. The largest holder is Gamma Telecom Holdings Limited, with 5% 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 0300 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider769 ranges
- Gamma Telecom Holdings Limited53 ranges
- BT27 ranges
- Lumen Technologies UK Limited21 ranges
- Colt Technology Services15 ranges
- TalkTalk Communications Limited12 ranges
- Vodafone Ltd (C&W)10 ranges
- Virgin Media Limited7 ranges
- GCI Network Solutions Limited6 ranges
- CINOS LIMITED5 ranges
- Windsor Telecom Limited4 ranges
- Tuxtel Ltd2 ranges
+ 76 more
Range status
How Ofcom lists the ranges starting 0300.
Allocations by year
Explore by the next digit
Each block below starts 0300. Pick one to narrow it down.
What a 0300 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.
0300 numbers: common questions
Who owns 0300 numbers?
Ofcom allocated the ranges starting 0300 to Gamma Telecom Holdings Limited, BT, Lumen Technologies UK 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 0300 number from abroad?
Replace the leading 0 with +44. For example, a number starting 0300 becomes +44 300 followed by the rest of the number.
How much does it cost to call a 0300 number?
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Is a call from a 0300 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 0300 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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