Area Code +351-254-(420000...429999) located in Peso da Régua, Viseu (18), more detail is as below. Place International Dialing Code : 351 International Prefix : 00 National Destination Code : 254 Subscriber Number From : 420000 Subscriber Number To : 429999 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 : 18 Region Name : Viseu City : Peso da Régua Timezone : Europe/Lisbon Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 41.1700 Longitude : -7.7900 ‹ previous : +351-254-(400000...409999) next › : +351-254-(450000...459999) Dialling Instructions For trunk calls: - 254 420000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 351 254 420000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 420000 ~ 429999 (Count: 10,000) Example: +351-254-420000 / 00351-254-420000 (254-420000 / -254-420000) +351-254-420001 / 00351-254-420001 (254-420001 / -254-420001) +351-254-420002 / 00351-254-420002 (254-420002 / -254-420002) +351-254-420003 / 00351-254-420003 (254-420003 / -254-420003) +351-254-420004 / 00351-254-420004 (254-420004 / -254-420004) ...+351-254-xxxxxx / 00351-254-xxxxxx (254-xxxxxx / -254-xxxxxx) ...+351-254-429995 / 00351-254-429995 (254-429995 / -254-429995) +351-254-429996 / 00351-254-429996 (254-429996 / -254-429996) +351-254-429997 / 00351-254-429997 (254-429997 / -254-429997) +351-254-429998 / 00351-254-429998 (254-429998 / -254-429998) +351-254-429999 / 00351-254-429999 (254-429999 / -254-429999)