Area Code +351-21-(1540000...1549999) located in Lisboa, Lisboa (11), more detail is as below. Place International Dialing Code : 351 International Prefix : 00 National Destination Code : 21 Subscriber Number From : 1540000 Subscriber Number To : 1549999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : OPTIMUS - COMUNICAÇÕES, S.A. Click here to buy Portugal Area Code Database Other Information Language Code : pt (Portuguese) Country Number : 620 (Portugal) Country Code : PT (Portugal) Region Code : 11 Region Name : Lisboa City : Lisboa Timezone : Europe/Lisbon Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 38.7100 Longitude : -9.1400 ‹ previous : +351-21-(1530000...1539999) next › : +351-21-(1550000...1559999) Dialling Instructions For trunk calls: - 21 1540000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 21 1540000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1540000 ~ 1549999 (Count: 10,000) Example: +351-21-1540000 / 00351-21-1540000 (21-1540000 / -21-1540000) +351-21-1540001 / 00351-21-1540001 (21-1540001 / -21-1540001) +351-21-1540002 / 00351-21-1540002 (21-1540002 / -21-1540002) +351-21-1540003 / 00351-21-1540003 (21-1540003 / -21-1540003) +351-21-1540004 / 00351-21-1540004 (21-1540004 / -21-1540004) ...+351-21-xxxxxxx / 00351-21-xxxxxxx (21-xxxxxxx / -21-xxxxxxx) ...+351-21-1549995 / 00351-21-1549995 (21-1549995 / -21-1549995) +351-21-1549996 / 00351-21-1549996 (21-1549996 / -21-1549996) +351-21-1549997 / 00351-21-1549997 (21-1549997 / -21-1549997) +351-21-1549998 / 00351-21-1549998 (21-1549998 / -21-1549998) +351-21-1549999 / 00351-21-1549999 (21-1549999 / -21-1549999)