Telephone country code +44 is the United Kingdom, but there are no valid telephone numbers beginning with either +44 4 or +44 51.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
A Singapore phone number typically follows the format of 65 XXXX XXXX, with the country code 65 followed by an 8-digit local number.
A Singapore phone number typically follows the format of 65 XXXX XXXX, with the country code 65 followed by an 8-digit local number.
Dial +44 20 xxxx xxxx from a mobile or 00 44 20 xxxx xxxx from a landline
Edmonton
A Singapore mobile number typically follows the format 65 XXXX XXXX, where "65" is the country code and "XXXX XXXX" represents the eight-digit local number.
UK
Birmingham
Country code +246 is the British/US military base on the island of Diego Garcia, in the middle of the Indian Ocean.
It usually means that is the amount of number and its spacing. xxx-xxx-xxxx can be replaced by 123-456-7890. (xxx) xxx-xxxx would be a phone number such as (408) 123-4567
Edinburgh, Scotland, UK
Country code +1 is North America (USA, Canada, etc.). Area code 443 is in Maryland, and the 454 prefix is in Annapolis, MD, USA.
If this is a LONDON, UK, number then the correct format for the number is: (020) 8888 xxxx The area served by 8888 is WOOD GREEN. These numbers were previously in the 0181-888-xxxx block, and before that in the 081-888-xxxx, block. Way before that they were originally in the 01-888-xxxx block, pre 1990.