Area Code +48-23-(6550000...6559999) located in Ciechanow, more detail is as below. Place International Dialing Code : 48 International Prefix : 00 National Destination Code : 23 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 : Orange Polska S.A. Click here to buy Poland Area Code Database Other Information Language Code : pl (Polish) Country Number : 616 (Poland) Country Code : PL (Poland) City : Ciechanow Timezone : Europe/Warsaw Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.8800 Longitude : 20.6200 ‹ previous : +48-23-(6540000...6549999) next › : +48-23-(6570000...6579999) Dialling Instructions For trunk calls: - 23 6550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 48 23 6550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6550000 ~ 6559999 (Count: 10,000) Example: +48-23-6550000 / 0048-23-6550000 (23-6550000 / -23-6550000) +48-23-6550001 / 0048-23-6550001 (23-6550001 / -23-6550001) +48-23-6550002 / 0048-23-6550002 (23-6550002 / -23-6550002) +48-23-6550003 / 0048-23-6550003 (23-6550003 / -23-6550003) +48-23-6550004 / 0048-23-6550004 (23-6550004 / -23-6550004) ...+48-23-xxxxxxx / 0048-23-xxxxxxx (23-xxxxxxx / -23-xxxxxxx) ...+48-23-6559995 / 0048-23-6559995 (23-6559995 / -23-6559995) +48-23-6559996 / 0048-23-6559996 (23-6559996 / -23-6559996) +48-23-6559997 / 0048-23-6559997 (23-6559997 / -23-6559997) +48-23-6559998 / 0048-23-6559998 (23-6559998 / -23-6559998) +48-23-6559999 / 0048-23-6559999 (23-6559999 / -23-6559999)