This page connects featured cities in Chattogram Division with their published or clearly qualified telephone numbering associations.
“Largest” refers to the priority city set used by this directory. It is not a live population ranking.
| City | Domestic area code | International prefix | Context |
|---|---|---|---|
| Chattogram | 023 | +880 23 | Chattogram, called Chittagong in the 2017 source, is in BTRC’s South-East Zone and uses featured BTCL NDC 23. |
| Cumilla | 023 | +880 23 | Cumilla, called Comilla in the 2017 source, is in BTRC’s South-East Zone and uses featured BTCL NDC 23. |
| Cox’s Bazar | 023 | +880 23 | Cox’s Bazar is listed in BTRC’s South-East Zone and uses featured BTCL NDC 23. |
| Noakhali | 023 | +880 23 | Noakhali is listed in BTRC’s South-East Zone and uses featured BTCL NDC 23. |
For a featured BTCL fixed line, dial domestic trunk 0 + the two-digit NDC + the eight-digit subscriber number. Remove only the initial 0 in international format: 022 becomes +880 22. Confirm the complete current number with the subscriber because legacy fixed-line numbers have been migrated in stages.
Bangladesh Standard Time (BST), UTC+6 year-round
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These pages cover the five complete BTCL geographic NDCs, not universal city codes. Other PSTN and IP-telephony operators combine their own network prefixes with the same zone structure and therefore use different NDCs. Each zone spans many districts, some administrative divisions cross numbering-zone boundaries, and migration from older local formats means a published address or business may still show a legacy number.
A code listed beside a city reflects a featured numbering association; it does not assert that every community in Chattogram Division uses that code or that the code stops at the administrative border.
This release includes 1 verified or clearly qualified code association for the featured cities in Chattogram Division.