Area Code +856-21-(510000...519999) 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 : 510000 Subscriber Number To : 519999 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-(410000...419999) next › : +856-21-(610000...619999) Dialling Instructions For trunk calls: 0 21 510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 856 21 510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 510000 ~ 519999 (Count: 10,000) Example: +856-21-510000 / 00856-21-510000 (021-510000 / 0-21-510000) +856-21-510001 / 00856-21-510001 (021-510001 / 0-21-510001) +856-21-510002 / 00856-21-510002 (021-510002 / 0-21-510002) +856-21-510003 / 00856-21-510003 (021-510003 / 0-21-510003) +856-21-510004 / 00856-21-510004 (021-510004 / 0-21-510004) ...+856-21-xxxxxx / 00856-21-xxxxxx (021-xxxxxx / 0-21-xxxxxx) ...+856-21-519995 / 00856-21-519995 (021-519995 / 0-21-519995) +856-21-519996 / 00856-21-519996 (021-519996 / 0-21-519996) +856-21-519997 / 00856-21-519997 (021-519997 / 0-21-519997) +856-21-519998 / 00856-21-519998 (021-519998 / 0-21-519998) +856-21-519999 / 00856-21-519999 (021-519999 / 0-21-519999)
