United Kingdom Communications: Dialing Guide
Basic Calling Information
Area Codes and Local Numbers
- Area code + subscriber number in the United Kingdom always totals 10 digits.
- Area codes in the United Kingdom contain between two to five digits.
- Subscriber numbers in the United Kingdom contain between six to eight digits.
- When calling between cities within the United Kingdom, dial the Domestic Access Code ("0") before the area code. Do not dial this access code when calling from another country.
Mobile Phones
- Mobile phone numbers in the United Kingdom contain 10 digits.
- When calling a mobile phone from within the United Kingdom, always dial the Domestic Access Code ("0") before the 10-digit number. Do not dial this access code when calling from another country.
Special Numbers and Services
- Toll-free numbers start with the prefix "0-800."
- Premium numbers start with the prefix "0-930."
- Several prefixes in the format "9XX" are reserved for future use.
Tones
- Ring tone: Double ring, repeated regularly
- Busy tone: Equal length on and off tones
Online Directory
Business Directories: www.business-directory-uk.co.uk and www.the-internet-pages.co.uk
Business and Residential Directory: www.ukphonebook.com
| Code Type | Definition | Code |
|---|---|---|
| Country Calling Code | Code to call the United Kingdom from another country | 44 |
| International Direct Dialing Code (IDD) | Prefix to make an international call from the United Kingdom | 00 |
| Domestic Access Code (DAC) | Prefix to make a call between cities in the United Kingdom | 0 |
| International Calls To United Kingdom |
Calls Within United Kingdom |
International Calls From United Kingdom |
|---|---|---|
| Dial your country's IDD + country code for the United Kingdom + area code in the United Kingdom + local number | Local: Dial the local number Long distance: Dial the DAC for the United Kingdom + area code + local number |
Dial the IDD for the United Kingdom + country code of country being dialed + area code (or mobile phone prefix) + local number |
| Example of an international call from the US to London, United Kingdom: 011 + [44] + (20) + local number |
Example of a long distance call from London to Manchester. 0 + (161) + local number |
Example of an international call from the United Kingdom to San Francisco, US: 00 + [1] + (415) + local number |
Source: International Telecommunications Union
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