UK-wide 03 numbers

03309 UK-wide numbers

Ofcom’s numbering data lists 100 number ranges starting 03309, allocated to 10 providers. The largest holder is Gamma Telecom Holdings Limited, with 1% 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 3309…
Drop the 0, add +44
Ofcom ranges
100
10 allocated
First allocated
2007
10 providers

Who were 03309 ranges given to?

Providers Ofcom allocated these number ranges to.

  • Not allocated to a provider90 ranges
  • Gamma Telecom Holdings Limited1 range
  • Twelve Telecom Limited1 range
  • 24 Seven Cloud Communications Ltd1 range
  • TelecomIQ Limited1 range
  • Nowtel Wholesale Limited1 range
  • Convergence Group (wireless) Networks Limited1 range
  • Citrus Telecommunications Ltd1 range
  • Number Solutions Ltd1 range
  • Windsor Telecom Limited1 range
  • DID Universe LLC1 range

Range status

How Ofcom lists the ranges starting 03309.

Free · 90 Allocated · 10

Allocations by year

20072025

What do these statuses mean?

Explore by the next digit

Each block below starts 03309. Pick one to narrow it down.

What a 03309 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

03309 numbers: common questions

Who owns 03309 numbers?

Ofcom allocated the ranges starting 03309 to Gamma Telecom Holdings Limited, Twelve Telecom Limited, 24 Seven Cloud Communications Ltd 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 03309 number from abroad?

Replace the leading 0 with +44. For example, a number starting 03309 becomes +44 3309 followed by the rest of the number.

How much does it cost to call a 03309 number?

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

Is a call from a 03309 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 03309 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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