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| S.N. | ZONE | DISTRICT | EXCHANGE | Area Code | Existing Numbering Range | New Numbering Range | ||
| 1 | BAGMATI | KATHMANDU | CENTRAL | 1 | 210000 - 269999 | 4210000 - 4269999 | ||
| CHHAUNI | 1 | 270000 - 289999 | 4270000 - 4289999 | |||||
| BALAMBU | 1 | 310000 - 329999 | 4310000 - 4329999 | |||||
| KIRTIPUR | 1 | 330000 - 339999 | 4330000 - 4339999 | |||||
| GONGABU | 1 | 350000 - 369999 | 4350000 - 4369999 | |||||
| BHADRAKALI | 1 | 370000 - 379999 | 4370000 - 4379999 | |||||
| NAXAL | 1 | 400000 - 449999 | 4400000 - 4449999 | |||||
| INDRAYANI | 1 | 450000 - 459999 | 4450000 - 4459999 | |||||
| CHABAHIL | 1 | 456000 - 499999 | 4456000 - 4499999 | |||||
| DAKCHHINKALI | 1 | 710000 - 719999 | 4710000 - 4719999 | |||||
| GHATTEKULO | 1 | 770000 - 779999 | 4770000 - 4779999 | |||||
| BABARMAHAL (TTC) | 1 | 780000 - 789999 | 4780000 - 4789999 | |||||
| BHAKTAPUR | BHAKTAPUR | 1 | 610000 - 629999 | 6610000 - 6629999 | ||||
| THIMI | 1 | 630000 - 649999 | 6630000 - 6649999 | |||||
| NAGARKOT | 1 | 680000 - 680999 | 6680000 - 6680999 | |||||
| LALITPUR | PATAN | 1 | 520000 - 559999 | 5520000 - 5559999 | ||||
| THAIBA | 1 | 560000 - 563999 | 5560000 - 5563999 | |||||
| THECHO | 1 | 570000 - 572999 | 5570000 - 5572999 | |||||
| LUBHU | 1 | 580000 - 584999 | 5580000 - 5584999 | |||||
| SANAGAUN | 1 | 581000 - 581999 | 5581000 - 5581999 | |||||
| DHADING | DHADING | 10 | 20000 - 20999 | 520000 - 520999 | ||||
| RASUWA | DHUNCHE | 10 | 40000 - 40499 | 540000 - 540499 | ||||
| NUWAKOT | TRISHULI | 10 | 60000 - 60999 | 560000 - 560999 | ||||
| S. PALCHOK | CHAUTARA | 11 | 20000 - 20499 | 620000 - 620499 | ||||
| BHOTE NAMLANG | 11 | 30000 - 30499 | 630000 - 630499 | |||||
| KAVRE | BANEPA | 11 | 60000 - 65999 | 660000 - 665999 | ||||
| 2 | MECHI | JHAPA | BHADRAPUR | 23 | 20000 - 23999 | 520000 - 523999 | ||
| BIRTAMOD | 23 | 40000 - 44999 | 540000 - 544999 | |||||
| SURUNGGA | 23 | 50000 - 50499 | 550000 - 550499 | |||||
| BUDDHABARE | 23 | 55000 - 55499 | 555000 - 555499 | |||||
| DHULABARI | 23 | 60000 - 61999 | 560000 - 561999 | |||||
| KAKADVITTA | 23 | 70000 - 70999 | 570000 - 570999 | |||||
| DAMAK | 23 | 80000 - 81999 | 580000 - 581999 | |||||
| DAMAKpmp | 23 | 39000 - 39499 | 539000 - 539499 | |||||
| PANCHTHAR | PHIDIM | 24 | 20000 - 20499 | 520000 - 520499 | ||||
| TAPLEJUNG | TAPLEJUNG | 24 | 60000 - 60999 | 460000 - 460999 | ||||
| ILAM | ILAM | 27 | 20000 - 21999 | 520000 - 521999 | ||||
| FIKKAL | 27 | 40000 - 40499 | 540000 - 540499 | |||||
| PASHUPATINAGAR | 27 | 60000 - 60999 | 560000 - 560999 | |||||
| 3 | KOSHI | MORANG | BIRATNAGAR | 21 | 20000 - 39999 | 520000 - 539999 | ||
| URLABARI | 21 | 40000 - 40999 | 540000 - 540999 | |||||
| PATHARI | 21 | 55000 - 55499 | 555000 - 555499 | |||||
| LETANG | 21 | 60000 - 60999 | 560000 - 560999 | |||||
| RANGELI | 21 | 80000 - 80499 | 580000 - 580499 | |||||
| BIRATNAGAR pmp | 21 | 49000 - 49999 | 549000 - 549999 | |||||
| BIRATCHOWK | 21 | 45000 - 45999 | 545000 - 545999 | |||||
| SUNSARI | DHARAN | 25 | 20000 - 39999 | 520000 - 539999 | ||||
| DUHABI | 25 | 40000 - 41999 | 540000 - 541999 | |||||
| INERWA | 25 | 60000 - 61999 | 560000 - 561999 | |||||
| JHUMKA | 25 | 62000 - 62499 | 562000 - 562499 | |||||
| ITAHARI | 25 | 80000 - 89999 | 580000 - 589999 | |||||
| DHANKUTA | DHANKUTA | 26 | 20000 - 21999 | 520000 - 521999 | ||||
| HILE | 26 | 40000 - 40499 | 540000 - 540499 | |||||
| TERHATHUM | TERHATHUM | 26 | 60000 - 60999 | 460000 - 460999 | ||||
| BHOJPUR | BHOJPUR | 29 | 20000 - 20499 | 420000 - 420499 | ||||
| S. SABHA | KHANDBARI | 29 | 60000 - 60999 | 560000 - 560999 | ||||
| CHAINPUR | 29 | 70000 - 70499 | 570000 - 570499 | |||||
| 4 | SAGARMATHA | SAPTARI | RAJBIRAJ | 31 | 20000 - 21999 | 520000 - 521999 | ||
| KALYANPUR | 31 | 40000 - 40499 | 540000 - 540499 | |||||
| KANCHANPUR | 31 | 60000 - 60999 | 560000 - 560999 | |||||
| HANUMANNAGAR | ||||||||