Area Code +66-21-(000000...999999) located in Bangkok and vicinity: Nonthaburi, Pathum Thani and Samut Prakarn, more detail is as below. Place International Dialing Code : 66 International Prefix : 001 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 000000 Subscriber Number To : 999999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 8 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Telephone Organization of Thailand (TOT) Click here to buy Thailand Area Code Database Other Information Language Code : th (Thai) Country Number : 764 (Thailand) Country Code : TH (Thailand) City : Bangkok and vicinity: Nonthaburi, Pathum Thani and Samut Prakarn Timezone : Asia/Bangkok Coordinated Universal Time : +07:00 Daylight Saving Time : No National Significant Number Minimum Length : 8 Latitude : 13.7200 Longitude : 100.4800 next › : +66-22-(000000...999999) Dialling Instructions For trunk calls: 0 21 000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 001 66 21 000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 000000 ~ 999999 (Count: 1,000,000) Example: +66-21-000000 / 00166-21-000000 (021-000000 / 0-21-000000) +66-21-000001 / 00166-21-000001 (021-000001 / 0-21-000001) +66-21-000002 / 00166-21-000002 (021-000002 / 0-21-000002) +66-21-000003 / 00166-21-000003 (021-000003 / 0-21-000003) +66-21-000004 / 00166-21-000004 (021-000004 / 0-21-000004) ...+66-21-xxxxxx / 00166-21-xxxxxx (021-xxxxxx / 0-21-xxxxxx) ...+66-21-999995 / 00166-21-999995 (021-999995 / 0-21-999995) +66-21-999996 / 00166-21-999996 (021-999996 / 0-21-999996) +66-21-999997 / 00166-21-999997 (021-999997 / 0-21-999997) +66-21-999998 / 00166-21-999998 (021-999998 / 0-21-999998) +66-21-999999 / 00166-21-999999 (021-999999 / 0-21-999999)
