UK-wide 03 numbers

037021 UK-wide numbers

Ofcom’s numbering data lists 10 number ranges starting 037021, allocated to 6 providers. The largest holder is Vodafone Ltd (C&W), 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 37021…
Drop the 0, add +44
Ofcom ranges
10
6 allocated
First allocated
2008
6 providers

Who were 037021 ranges given to?

Providers Ofcom allocated these number ranges to.

  • Not allocated to a provider4 ranges
  • Vodafone Ltd (C&W)1 range
  • Dynamic Mobile Billing Limited1 range
  • Spark Technology Services Limited1 range
  • Numbers Telecom Limited1 range
  • GCI Network Solutions Limited1 range
  • Core Telecom Limited1 range

Range status

How Ofcom lists the ranges starting 037021.

Allocated · 6 Protected · 3 Free · 1

Allocations by year

20082023

What do these statuses mean?

Explore by the next digit

Each block below starts 037021. Pick one to narrow it down.

What a 037021 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

037021 numbers: common questions

Who owns 037021 numbers?

Ofcom allocated the ranges starting 037021 to Vodafone Ltd (C&W), Dynamic Mobile Billing Limited, Spark Technology Services 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 037021 number from abroad?

Replace the leading 0 with +44. For example, a number starting 037021 becomes +44 37021 followed by the rest of the number.

How much does it cost to call a 037021 number?

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

Is a call from a 037021 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 037021 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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