Telephone numbers in Singapore digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required. Rationalisation was based on geographical locale over the 12 years. In 1995, the digit '9' was added to the front of mobiland pager numbers, making numbers eight digits, and on 1 March 2002, the digit '6' was added to the front of existing fixed line telephone
Non-geographic telephone numbers in the United Kingdom 01 or 02). Regulation ensures that if a tariff offers inclusive minutes or free calls to numbers starting with 01 or 02, calls to 03 numbers must be included on exactly the same terms. Since their introduction in 2007, these 03 numbers have been the only variety of non-geographic number whose charge is officially linked to that of geographic numbers. No provision has been made for replicating the old 'local rate' or 'national rate' prefixes, as almost all UK telephone operators now charge all landline calls at the same rate, regardless of location. As of 2016, active 03 number prefixes