030399 UK-wide numbers
Ofcom’s numbering data lists 10 number ranges starting 030399, allocated to 1 provider. 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 030399 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider9 ranges
- Windsor Telecom Limited1 range
Range status
How Ofcom lists the ranges starting 030399.
Explore by the next digit
Each block below starts 030399. Pick one to narrow it down.
What a 030399 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.
030399 numbers: common questions
Who owns 030399 numbers?
Ofcom allocated the ranges starting 030399 to Windsor Telecom Limited. 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 030399 number from abroad?
Replace the leading 0 with +44. For example, a number starting 030399 becomes +44 30399 followed by the rest of the number.
How much does it cost to call a 030399 number?
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Is a call from a 030399 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 030399 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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