Area Code +47-21-(377000...399999) located in All locations, Oslo fylke (03), more detail is as below. Place International Dialing Code : 47 International Prefix : 00 National Destination Code : 21 Subscriber Number From : 377000 Subscriber Number To : 399999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 8 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Telio Telecom AS Click here to buy Norway Area Code Database Other Information Language Code : no Country Number : 578 (Norway) Country Code : NO (Norway) Region Code : 03 Region Name : Oslo fylke City : All locations Timezone : Europe/Oslo Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 59.9300 Longitude : 10.7500 ‹ previous : +47-21-(300000...319999) next › : +47-21-(410000...410999) Dialling Instructions For trunk calls: - 21 377000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 47 21 377000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 377000 ~ 399999 (Count: 23,000) Example: +47-21-377000 / 0047-21-377000 (21-377000 / -21-377000) +47-21-377001 / 0047-21-377001 (21-377001 / -21-377001) +47-21-377002 / 0047-21-377002 (21-377002 / -21-377002) +47-21-377003 / 0047-21-377003 (21-377003 / -21-377003) +47-21-377004 / 0047-21-377004 (21-377004 / -21-377004) ...+47-21-xxxxxx / 0047-21-xxxxxx (21-xxxxxx / -21-xxxxxx) ...+47-21-399995 / 0047-21-399995 (21-399995 / -21-399995) +47-21-399996 / 0047-21-399996 (21-399996 / -21-399996) +47-21-399997 / 0047-21-399997 (21-399997 / -21-399997) +47-21-399998 / 0047-21-399998 (21-399998 / -21-399998) +47-21-399999 / 0047-21-399999 (21-399999 / -21-399999)