- Cost to call
- Same as 01/02; in inclusive minutes
- Geographic
- No - UK-wide
- Common ranges
- 0300, 0330, 0345, 0370
- Good for
- National businesses & charities
What are 03 non-geographic numbers (0300, 0330, 0345, 0370)?
03 numbers (0300, 0330, 0343, 0344, 0345, 0370 and similar) are UK-wide non-geographic numbers. By law they must cost no more than a normal 01/02 landline call and must count towards any inclusive call minutes.
Who uses 03 numbers?
0300 numbers are reserved for public bodies, charities and not-for-profits; 0330, 0345 and 0370 numbers are widely used by businesses that want a single national number without tying it to one town.
How much do 03 numbers cost to call?
Calls to 03 numbers cost the same as calls to 01 and 02 numbers and are included in any inclusive minutes on your landline or mobile plan. Ofcom rules guarantee this, which is why 03 numbers are a caller-friendly alternative to 084/087.
Scam & cost warnings
03 numbers are low-risk for callers because the cost is capped, but as with any number, treat unexpected calls asking for personal or payment details with caution.
How to check a 03 number
Not sure about a number you’ve been given or called by? Paste it into the
UK phone number checker — it identifies the
type, the area (for geographic numbers) and the provider Ofcom allocated the range
to, using official data refreshed every Wednesday. For example, try 0306 999 0000 in the checker above.
Had an unexpected call from an 03 number and want to know whether it’s safe to ring back? See our plain-English guide: Who called me from an 0330 or 0300 number?