Area Code +880-821-(810000...819999) located in Sylhet, Sylhet (60), more detail is as below. Place International Dialing Code : 880 International Prefix : 00 National Prefix : 0 National Destination Code : 821 Subscriber Number From : 810000 Subscriber Number To : 819999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : BTTB Click here to buy Bangladesh Area Code Database Other Information Language Code : bn (Bengali) Country Number : 50 (Bangladesh) Country Code : BD (Bangladesh) Region Code : 60 Region Name : Sylhet City : Sylhet Timezone : Asia/Dhaka Coordinated Universal Time : +06:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 24.9000 Longitude : 91.8700 ‹ previous : +880-821-(760000...769999) next › : +880-8220-(80000...89999) Dialling Instructions For trunk calls: 0 821 810000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 880 821 810000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 810000 ~ 819999 (Count: 10,000) Example: +880-821-810000 / 00880-821-810000 (0821-810000 / 0-821-810000) +880-821-810001 / 00880-821-810001 (0821-810001 / 0-821-810001) +880-821-810002 / 00880-821-810002 (0821-810002 / 0-821-810002) +880-821-810003 / 00880-821-810003 (0821-810003 / 0-821-810003) +880-821-810004 / 00880-821-810004 (0821-810004 / 0-821-810004) ...+880-821-xxxxxx / 00880-821-xxxxxx (0821-xxxxxx / 0-821-xxxxxx) ...+880-821-819995 / 00880-821-819995 (0821-819995 / 0-821-819995) +880-821-819996 / 00880-821-819996 (0821-819996 / 0-821-819996) +880-821-819997 / 00880-821-819997 (0821-819997 / 0-821-819997) +880-821-819998 / 00880-821-819998 (0821-819998 / 0-821-819998) +880-821-819999 / 00880-821-819999 (0821-819999 / 0-821-819999)