Area Code +351-255-(320000...329999) located in Penafiel, Porto (13), more detail is as below. Place International Dialing Code : 351 International Prefix : 00 National Destination Code : 255 Subscriber Number From : 320000 Subscriber Number To : 329999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : PT - 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 : 13 Region Name : Porto City : Penafiel Timezone : Europe/Lisbon Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 41.2100 Longitude : -8.2900 ‹ previous : +351-255-(310000...319999) next › : +351-255-(330000...339999) Dialling Instructions For trunk calls: - 255 320000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 255 320000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 320000 ~ 329999 (Count: 10,000) Example: +351-255-320000 / 00351-255-320000 (255-320000 / -255-320000) +351-255-320001 / 00351-255-320001 (255-320001 / -255-320001) +351-255-320002 / 00351-255-320002 (255-320002 / -255-320002) +351-255-320003 / 00351-255-320003 (255-320003 / -255-320003) +351-255-320004 / 00351-255-320004 (255-320004 / -255-320004) ...+351-255-xxxxxx / 00351-255-xxxxxx (255-xxxxxx / -255-xxxxxx) ...+351-255-329995 / 00351-255-329995 (255-329995 / -255-329995) +351-255-329996 / 00351-255-329996 (255-329996 / -255-329996) +351-255-329997 / 00351-255-329997 (255-329997 / -255-329997) +351-255-329998 / 00351-255-329998 (255-329998 / -255-329998) +351-255-329999 / 00351-255-329999 (255-329999 / -255-329999)