- <!-- We are following the more specific lengths specified in the communication in the ITU
- doc of 26.VIII.2012, rather than the brief summary lengths (which actually contradict).
- The prefixes have been verified by looking at the Persian telecommunications site.
- 22[189], 29[12] have become 21, as part of the shift to unify prefixes. 746 was also
- found on the website http://www.tct.ir/?siteid=1&pageid=410&siteid=1 but this seems
- to be a typo. -->
+ <!-- In Summer 2014 Iran unified all fixed phone numbers in the following way:
+ Each province is assigned a two digit prefix (except for North Khorasan which has 3).
+ Within each province, all numbers are exactly eight digits. The expression below is
+ organized by province. For each province we accept all eight-digit combinations.
+
+ 11 Mazandaran
+ 13 Gilan
+ 17 Golestan
+ 21 Tehran
+ 23 Semnan
+ 24 Zanjan
+ 25 Qom
+ 26 Alborz
+ 28 Qazvin
+ 31 Isfahan
+ 34 Kerman
+ 35 Yazd
+ 38 Chahar Mahaal and Bakhtiari
+ 41 East Azerbaijan
+ 44 West Azerbaijan
+ 45 Ardabil
+ 51 Razavi Khorasan
+ 54 Sistan and Baluchestan
+ 56 South Khorasan
+ 57 North Khorasan (Extras)
+ 58 North Khorasan
+ 61 Khuzestan
+ 64 North Khorasan (Extras)
+ 66 Lorestan
+ 71 Fars
+ 74 Kohgiluyeh and Boyer-Ahmad
+ 76 Hormozgan
+ 77 Bushehr
+ 81 Hamadan
+ 83 Kermanshah
+ 84 Ilam
+ 86 Markazi
+ 87 Kurdistan
+ -->