Area Code +351-21-(1800000...1809999) 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 : 1800000 Subscriber Number To : 1809999 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 : CABOVISÃO - SOCIEDADE DE TELEVISÃO POR CABO, 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-(1590000...1599999) next › : +351-21-(1810000...1819999) Dialling Instructions For trunk calls: - 21 1800000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 21 1800000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1800000 ~ 1809999 (Count: 10,000) Example: +351-21-1800000 / 00351-21-1800000 (21-1800000 / -21-1800000) +351-21-1800001 / 00351-21-1800001 (21-1800001 / -21-1800001) +351-21-1800002 / 00351-21-1800002 (21-1800002 / -21-1800002) +351-21-1800003 / 00351-21-1800003 (21-1800003 / -21-1800003) +351-21-1800004 / 00351-21-1800004 (21-1800004 / -21-1800004) ...+351-21-xxxxxxx / 00351-21-xxxxxxx (21-xxxxxxx / -21-xxxxxxx) ...+351-21-1809995 / 00351-21-1809995 (21-1809995 / -21-1809995) +351-21-1809996 / 00351-21-1809996 (21-1809996 / -21-1809996) +351-21-1809997 / 00351-21-1809997 (21-1809997 / -21-1809997) +351-21-1809998 / 00351-21-1809998 (21-1809998 / -21-1809998) +351-21-1809999 / 00351-21-1809999 (21-1809999 / -21-1809999)