Area Code +351-22-(5510000...5519999) located in Porto, Porto (13), more detail is as below. Place International Dialing Code : 351 International Prefix : 00 National Destination Code : 22 Subscriber Number From : 5510000 Subscriber Number To : 5519999 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 : 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 : Porto Timezone : Europe/Lisbon Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 41.1500 Longitude : -8.6100 ‹ previous : +351-22-(5500000...5509999) next › : +351-22-(5550000...5559999) Dialling Instructions For trunk calls: - 22 5510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 22 5510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5510000 ~ 5519999 (Count: 10,000) Example: +351-22-5510000 / 00351-22-5510000 (22-5510000 / -22-5510000) +351-22-5510001 / 00351-22-5510001 (22-5510001 / -22-5510001) +351-22-5510002 / 00351-22-5510002 (22-5510002 / -22-5510002) +351-22-5510003 / 00351-22-5510003 (22-5510003 / -22-5510003) +351-22-5510004 / 00351-22-5510004 (22-5510004 / -22-5510004) ...+351-22-xxxxxxx / 00351-22-xxxxxxx (22-xxxxxxx / -22-xxxxxxx) ...+351-22-5519995 / 00351-22-5519995 (22-5519995 / -22-5519995) +351-22-5519996 / 00351-22-5519996 (22-5519996 / -22-5519996) +351-22-5519997 / 00351-22-5519997 (22-5519997 / -22-5519997) +351-22-5519998 / 00351-22-5519998 (22-5519998 / -22-5519998) +351-22-5519999 / 00351-22-5519999 (22-5519999 / -22-5519999)