UK-wide 03 numbers

030037 UK-wide numbers

Ofcom’s numbering data lists 10 number ranges starting 030037, allocated to 2 providers. The largest holder is Zestel Limited, with 10% 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.

Number type
UK-wide 03 numbers
03
From abroad
+44 30037…
Drop the 0, add +44
Ofcom ranges
10
2 allocated
First allocated
2013
2 providers

Who were 030037 ranges given to?

Providers Ofcom allocated these number ranges to.

  • Not allocated to a provider8 ranges
  • Zestel Limited1 range
  • Gamma Telecom Holdings Limited1 range

Range status

How Ofcom lists the ranges starting 030037.

Free · 8 Allocated · 2

Allocations by year

20132017

What do these statuses mean?

Explore by the next digit

Each block below starts 030037. Pick one to narrow it down.

What a 030037 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.

The range holder isn’t necessarily the caller. Ofcom gives numbers to providers in blocks, and people and businesses can take their number with them when they switch. To find out who actually called, check the full number.
Questions

030037 numbers: common questions

Who owns 030037 numbers?

Ofcom allocated the ranges starting 030037 to Zestel Limited, Gamma Telecom Holdings 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 030037 number from abroad?

Replace the leading 0 with +44. For example, a number starting 030037 becomes +44 30037 followed by the rest of the number.

How much does it cost to call a 030037 number?

Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.

Is a call from a 030037 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 030037 number call you?

Check the full number to see if it belongs to a verified UK business and what other people have reported.

UK phone numbers explained → · Let us screen unknown callers →