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 Malaysia are assigned in smaller blocks of 10,000, 100,000 or 1,000,000 numbers, as opposed to the previous practice of assigning a whole prefix to an operator, which is a block of nearly 8,000,000 numbers. The advent of mobile number portability means the current operator of a particular mobile phone number is not necessarily the original assigned operator of the number. Note: "R = 1 to 6, X = 0 to 9, Y = 1 to 9" Mobile number portability was introduced on 1 October 2008 for mobile phone numbers in a bid to increase market competition. Thus, subscribers are allowed to