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Vietnam telephone numbering changes - February to June, 2017

(2 posts)
  1. admin
    Key Master

    From February 11 to June 17, 2017 Vietnam implemented an update of its geographical area code system. The change aims to unify the country's landline telephone numbering format and will result in all traditional PSTN phone numbers comprising 10 digits, area code included. Previously Vietnam used 9 and 10 digit telephone numbers.

    Hanoi and Ho Chi Minh City have gone from 1 to 2 digit area codes. The rest of Vietnam's provinces now use 3 digit area codes. The following provinces get to keep their old area codes: Vinh Phuc (211), Phu Tho (210), Hoa Binh (218) and Ha Giang (219).

    Here's a detailed article on the change published in local media and including a list of old and new area codes:
    https://tuoitrenews.vn/society/38168/vietnam-to-apply-extensive-area-code-change-next-year

    Our How to call Vietnam page has up to date information on dialing to this country.

    Posted 2 years ago #
  2. admin
    Key Master

    From September 15, 2018 until June 30, 2019 all 10 digit mobile phone numbers of the format 1xx xxx xxxx will change to 9 digits. The change consists in replacing the initial 3 digits with two (different) digits:

    120 xxx xxxx becomes 70 xxx xxxx

    In the same way the following 3 digit prefixes have changed or are about to change:
    121 becomes 79
    122 >> 77
    123 >> 83
    124 >> 84
    125 >> 85
    126 >> 76
    127 >> 81
    128 >> 78
    129 >> 82
    162 >> 32
    163 >> 33
    164 >> 34
    165 >> 35
    166 >> 36
    167 >> 37
    168 >> 38
    169 >> 39
    186 >> 56
    188 >> 58
    199 >> 59
    992 >> 672 (VSAT)

    More on this:
    http://sggpnews.org.vn/science_technology/11digit-mobile-phone-numbers-to-be-changed-to-10digits-75203.html

    Posted 5 months ago #

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