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Number ranges starting 01 can have National Significant Number (NSN) length of 10 or (very rarely) 9 digits. NSN is the number of digits after the leading 0 trunk code or +44 international prefix. The 0800 range can have NSN length as 10, 9, or 7 digits. The 0845 range can have NSN length as 10 or 7 digits.
Both BT and Mercury issued only 10-digit freephone numbers to users after 1997. With the market opened up to competition, many other companies also allocated these numbers to users. Usage of pre-existing 10- and 9-digit 0800 numbers and pre-existing 9-digit 0500 numbers continued as before.
Mobile phones require full 10-digit number which starts with 3-digit non-geographical area codes 900–990. For international calls abroad or international roaming calls to Russia, E.123 international notation with an international call prefix '+' is the only allowed calling number format. For local calls both 8 and 7 are accepted as a trunk code.
Ten-digit dialing is a telephone dialing procedure in the countries and territories that are members of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when dialing to initiate a telephone call.
02x yyyy yyyy [eight-digit local number] 011x yyy yyyy [seven-digit local number] 01x1 yyy yyyy [seven-digit local number] 020 to 029 0113 to 0119 0121 to 0191 020: London (previously 0171 and 0181) (previously 071 and 081) (previously 01) 0121: Birmingham (B1) (previously 021) 023
Telephone numbering plan. A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. [1] Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing.
When dialling a UK number from abroad, the zero must be omitted. Because of this, it has become common (but incorrect) practice to write telephone numbers used both nationally and internationally with the 0 in parentheses, for example: +44 (0)20 7946 0234; if the number is dialled with the parenthesised zero, the call will fail.
8~10 8 Switzerland: 41 9 fixed with 0 00 0 Transnistria † 373 5 / 373 2 (Moldova codes used) 7 variable 00 0 Turkey: 90 10 fixed 00 0 Northern Cyprus † 90 392 (fixed), 90 533 / 90 542 (mobile) 7 fixed 00 0 United Kingdom: 44 9 or 10 digits (geographic); 7, 9 or 10 (non-geographic) variable 00 0 Ukraine: 380 9 variable 00 0 Vatican City
E.164 is an international standard ( ITU-T Recommendation), titled The international public telecommunication numbering plan, that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data networks . E.164 defines a general format for international telephone numbers.
Zone 8 uses four 2-digit codes (81, 82, 84, 86) and four sets of 3-digit codes (80x, 85x, 87x, 88x) to serve East Asia, South Asia and special services. 83x and 89x are unallocated. Zone 9 uses seven 2-digit codes (90–95, 98) and three sets of 3-digit codes (96x, 97x, 99x) to serve the Middle East , West Asia , Central Asia , parts of South ...