Area Code +421-55-(5900000...5999999) located in Košice, Košický (KI), more detail is as below. Place International Dialing Code : 421 International Prefix : 00 National Prefix : 0 National Destination Code : 55 Subscriber Number From : 5900000 Subscriber Number To : 5999999 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 : Slovak Telekom Click here to buy Slovakia Area Code Database Other Information Language Code : sk (Slovak) Country Number : 703 (Slovakia) Country Code : SK (Slovakia) Region Code : KI Region Name : Košický City : Košice Timezone : Europe/Bratislava Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 48.7200 Longitude : 21.2600 ‹ previous : +421-55-(5500000...5509999) next › : +421-55-(6000000...6099999) Dialling Instructions For trunk calls: 0 55 5900000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 55 5900000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5900000 ~ 5999999 (Count: 100,000) Example: +421-55-5900000 / 00421-55-5900000 (055-5900000 / 0-55-5900000) +421-55-5900001 / 00421-55-5900001 (055-5900001 / 0-55-5900001) +421-55-5900002 / 00421-55-5900002 (055-5900002 / 0-55-5900002) +421-55-5900003 / 00421-55-5900003 (055-5900003 / 0-55-5900003) +421-55-5900004 / 00421-55-5900004 (055-5900004 / 0-55-5900004) ...+421-55-xxxxxxx / 00421-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+421-55-5999995 / 00421-55-5999995 (055-5999995 / 0-55-5999995) +421-55-5999996 / 00421-55-5999996 (055-5999996 / 0-55-5999996) +421-55-5999997 / 00421-55-5999997 (055-5999997 / 0-55-5999997) +421-55-5999998 / 00421-55-5999998 (055-5999998 / 0-55-5999998) +421-55-5999999 / 00421-55-5999999 (055-5999999 / 0-55-5999999)