Area Code +351-309-(810000...819999) located in VoIP, more detail is as below. Place International Dialing Code : 351 International Prefix : 00 National Destination Code : 309 Subscriber Number From : 810000 Subscriber Number To : 819999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Click here to buy Portugal Area Code Database Other Information Language Code : pt (Portuguese) Country Number : 620 (Portugal) Country Code : PT (Portugal) City : VoIP Timezone : Europe/Lisbon Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : None Longitude : None ‹ previous : +351-309-(800000...809999) next › : +351-309-(820000...829999) Dialling Instructions For trunk calls: - 309 810000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 309 810000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 810000 ~ 819999 (Count: 10,000) Example: +351-309-810000 / 00351-309-810000 (309-810000 / -309-810000) +351-309-810001 / 00351-309-810001 (309-810001 / -309-810001) +351-309-810002 / 00351-309-810002 (309-810002 / -309-810002) +351-309-810003 / 00351-309-810003 (309-810003 / -309-810003) +351-309-810004 / 00351-309-810004 (309-810004 / -309-810004) ...+351-309-xxxxxx / 00351-309-xxxxxx (309-xxxxxx / -309-xxxxxx) ...+351-309-819995 / 00351-309-819995 (309-819995 / -309-819995) +351-309-819996 / 00351-309-819996 (309-819996 / -309-819996) +351-309-819997 / 00351-309-819997 (309-819997 / -309-819997) +351-309-819998 / 00351-309-819998 (309-819998 / -309-819998) +351-309-819999 / 00351-309-819999 (309-819999 / -309-819999)