03721 UK-wide numbers
Ofcom’s numbering data lists 100 number ranges starting 03721, allocated to 8 providers. The largest holder is GCI Network Solutions Limited, with 17% 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 03721 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider63 ranges
- GCI Network Solutions Limited17 ranges
- Sigma Voice Solutions Ltd6 ranges
- Content Guru Limited5 ranges
- Dynamic Mobile Billing Limited2 ranges
- 24 Seven Communications Limited2 ranges
- Magrathea Telecommunications Limited2 ranges
- Vodafone Ltd (C&W)2 ranges
- VoIP-Un Limited1 range
Range status
How Ofcom lists the ranges starting 03721.
Allocations by year
Explore by the next digit
Each block below starts 03721. Pick one to narrow it down.
What a 03721 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.
03721 numbers: common questions
Who owns 03721 numbers?
Ofcom allocated the ranges starting 03721 to GCI Network Solutions Limited, Sigma Voice Solutions Ltd, Content Guru 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 03721 number from abroad?
Replace the leading 0 with +44. For example, a number starting 03721 becomes +44 3721 followed by the rest of the number.
How much does it cost to call a 03721 number?
Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.
Is a call from a 03721 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 03721 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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