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 the same rate as national (or 'long distance') calls. It initially existed alongside the older 0541 and 0990 prefixes, before finally replacing them entirely in 2001. In 2000, a further batch of numbers using the prefix 0871 was introduced for use with dial-up internet services (in the range 0871 0xx xxxx) and for general uses charged at a rate of up to 10p per minute (all other 0871 numbers). In 2007, the 0872 and 0873 prefixes were added to provide additional capacity. In contrast to the 0870 range, neither prefix was linked to geographic rates or included in call packages,