Area Code +31-30-(6550000...6559999) located in Utrecht, Utrecht (UT), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 30 Subscriber Number From : 6550000 Subscriber Number To : 6559999 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 : Globalcall B.V. Click here to buy Netherlands Area Code Database Other Information Language Code : nl (Dutch) Country Number : 528 (Netherlands) Country Code : NL (Netherlands) Region Code : UT Region Name : Utrecht City : Utrecht Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.0900 Longitude : 5.1200 ‹ previous : +31-30-(6390000...6399999) next › : +31-30-(6560000...6569999) Dialling Instructions For trunk calls: 0 30 6550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 30 6550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6550000 ~ 6559999 (Count: 10,000) Example: +31-30-6550000 / 0031-30-6550000 (030-6550000 / 0-30-6550000) +31-30-6550001 / 0031-30-6550001 (030-6550001 / 0-30-6550001) +31-30-6550002 / 0031-30-6550002 (030-6550002 / 0-30-6550002) +31-30-6550003 / 0031-30-6550003 (030-6550003 / 0-30-6550003) +31-30-6550004 / 0031-30-6550004 (030-6550004 / 0-30-6550004) ...+31-30-xxxxxxx / 0031-30-xxxxxxx (030-xxxxxxx / 0-30-xxxxxxx) ...+31-30-6559995 / 0031-30-6559995 (030-6559995 / 0-30-6559995) +31-30-6559996 / 0031-30-6559996 (030-6559996 / 0-30-6559996) +31-30-6559997 / 0031-30-6559997 (030-6559997 / 0-30-6559997) +31-30-6559998 / 0031-30-6559998 (030-6559998 / 0-30-6559998) +31-30-6559999 / 0031-30-6559999 (030-6559999 / 0-30-6559999)