Use this free UK phone number checker to validate and format any UK telephone number. Instantly convert it into the correct international dial format (+44), identify the number type (01, 02, 03, 05, 07, 08, 09 and more), estimate call cost guidance, detect the geographic area, and perform a range holder lookup.
Enter a UK phone number to check whether it is valid, see the correct formatting, and identify what type of number it is.
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Enter a UK telephone number and this tool will give you all the information available for it.
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This checker provides useful telecoms data including:
Is the number structured correctly for UK dialling?
Spaces added in the correct positions
Opens a report page for the number using Who Called
02 numbers are also geographic landlines, mostly used in larger cities such as London (020), Cardiff (029), and Northern Ireland (028).
03 numbers are non-geographic but charged at the same rate as 01 and 02 numbers. They are widely used by businesses, government departments, and organisations.
05 numbers are used for corporate numbering and special services. Pricing and call inclusion varies depending on provider. Some 05 ranges may not be included in standard bundles.
07 numbers are UK mobile numbers and are usually included in call plans. Some ranges such as 070 are not true mobiles.
08 numbers include freephone and service number ranges:
09 numbers are premium rate numbers and often have high call charges. These may include per-minute costs and connection fees.
070 numbers are not mobile numbers. They are personal numbering services and are often expensive to call, sometimes costing similar to premium rate calls.
118 numbers are directory enquiry services and are usually extremely expensive compared to standard calls.
If a number starts with 01 or 02, it is a geographic landline number. The tool attempts to detect the correct UK area code and match it to a location.
This is useful when identifying where a caller is likely based.
This tool can perform a range holder lookup, which identifies the telecom provider responsible for the number range.
This can be useful for:
This tool provides guidance based on UK numbering structure and common telecom range rules. Pricing and call charges depend on your provider and tariff. Range holder results are based on Ofcom range holder information and may not reflect real-time porting status.
