Look up UK and international dialling codes (also known as ‘STD codes’) to discover where unknown numbers are calling you from. Simply type in the area code and we'll tell you which region that phone number belongs to. Or you can type in a location, and we'll give you the dialling code for that area. Read More
Searching for telephone area codes is free. To unlock in-depth data, purchase credits and access our comprehensive online Telephone Directory.
Please enter a UK dialling code or location/postcode
Please enter an international dialling code or country name
If you need further information on a UK phone number – such as the owner's name or registered address – our Residential Telephone Directory is a great place to start.
You get 5 free daily searches on this service. After that, you will need to buy ukphonebook.com credits. Alternatively, you can subscribe to one of our extended search platforms.
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T2A is a single API that collates precise and up-to-date information on residential and business telephone numbers across the UK. Among other uses, you can use it to validate phone numbers, check dialling codes, and pinpoint the location of a mobile or landline number.
When you search for a Dialling Code or Location, we will display the STD code alongside a clickable link of the area. Clicking on the location link will present you with a Map of the region, supplied by Google Maps.
You can look up as many UK and international dialling codes as you need to – our Dialling Codes search feature is free to use.
Dialling codes are the digits at the beginning of all UK landline phone numbers that identify the call's regional location. They’re also known as area codes or STD codes, though the latter has fallen out of fashion.
For example, if you had a York number of 01904 555 555, the first section (01904) is the dialling code. For international telephone numbers, the area code will usually have either two zeros (00) or a plus symbol (+) in front of it.
Our Dialling Code search function is easy to use, simply type in the information you have into one of the boxes and we'll provide you with the correct area code and location for that number. This information is provided by public data sources including Directory Enquiries.
Search for as many STD codes as you need – each area code search is free. Potential reasons you may need to use our Dialling Code search include:
Get quick access to UK and International dialling codes on ukphonebook.com. We’ll provide you with the accurate information you need to find out the location of any telephone call in the UK.
We acquire our data from trusted sources like Directory Enquiries, Companies House and the UK Electoral role, so you can be sure it’s up to date and accurate. We take data security extremely seriously. All our records are stored securely, according to the latest GDPR laws and regulations, and we will never use your data without permission.
T2A API - Find a UK dialling code
We also provide the UK dialling code lookup and international dialling code lookup via an API. Each method lets you find a dialling code by location or a location by dialling code.
