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
History of telephone numbers in the United Kingdom London's 081 became 0181. A small selection of the codes that changed are shown in the table below: This was done with a view to reorganising the numbering plan at a later date, so that the first and second digits would indicate the type of service called: Five new area codes were introduced for cities that were running low on phone numbers—and a digit was prepended to each existing local number. Most of the initial local number ranges created by PhONEday were exhausted within just a few years. New local numbers then began to be allocated with a different initial