Area Code +856-21-(310000...319999) located in Vientiane, more detail is as below. Place International Dialing Code : 856 International Prefix : 00 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 310000 Subscriber Number To : 319999 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 : Laotel Click here to buy Laos Area Code Database Other Information Language Code : lo (Laothian) Country Number : 418 (Laos) Country Code : LA (Laos) City : Vientiane Timezone : Asia/Vientiane Coordinated Universal Time : +07:00 Daylight Saving Time : No National Significant Number Minimum Length : 8 Latitude : 17.9600 Longitude : 102.6100 ‹ previous : +856-21-(210000...219999) next › : +856-21-(410000...419999) Dialling Instructions For trunk calls: 0 21 310000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 856 21 310000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 310000 ~ 319999 (Count: 10,000) Example: +856-21-310000 / 00856-21-310000 (021-310000 / 0-21-310000) +856-21-310001 / 00856-21-310001 (021-310001 / 0-21-310001) +856-21-310002 / 00856-21-310002 (021-310002 / 0-21-310002) +856-21-310003 / 00856-21-310003 (021-310003 / 0-21-310003) +856-21-310004 / 00856-21-310004 (021-310004 / 0-21-310004) ...+856-21-xxxxxx / 00856-21-xxxxxx (021-xxxxxx / 0-21-xxxxxx) ...+856-21-319995 / 00856-21-319995 (021-319995 / 0-21-319995) +856-21-319996 / 00856-21-319996 (021-319996 / 0-21-319996) +856-21-319997 / 00856-21-319997 (021-319997 / 0-21-319997) +856-21-319998 / 00856-21-319998 (021-319998 / 0-21-319998) +856-21-319999 / 00856-21-319999 (021-319999 / 0-21-319999)
