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
Telephone numbers in China the country codes +852 and +853, respectively. In addition, the PRC numbering plan once reserved space for Taiwan, but have dropped this practice. In December 2016, in mainland China consigned a real name to each cell phone number. In mainland China, mobile phone numbers have 11 digits in the format 1xx-xxxx-xxxx, in which the first three digits (e.g. 13x, 14x,15x,17x and 18x) designate the mobile phone service provider. As new numbers were introduced over time, it is possible to recognize the age of a number: The oldest GSM numbers start with 1390…, the second oldest 1380… and 1300… Keeping the