Area Code +421-55-(6000000...6099999) 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 : 6000000 Subscriber Number To : 6099999 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-(5900000...5999999) next › : +421-55-(6100000...6199999) Dialling Instructions For trunk calls: 0 55 6000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 55 6000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6000000 ~ 6099999 (Count: 100,000) Example: +421-55-6000000 / 00421-55-6000000 (055-6000000 / 0-55-6000000) +421-55-6000001 / 00421-55-6000001 (055-6000001 / 0-55-6000001) +421-55-6000002 / 00421-55-6000002 (055-6000002 / 0-55-6000002) +421-55-6000003 / 00421-55-6000003 (055-6000003 / 0-55-6000003) +421-55-6000004 / 00421-55-6000004 (055-6000004 / 0-55-6000004) ...+421-55-xxxxxxx / 00421-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+421-55-6099995 / 00421-55-6099995 (055-6099995 / 0-55-6099995) +421-55-6099996 / 00421-55-6099996 (055-6099996 / 0-55-6099996) +421-55-6099997 / 00421-55-6099997 (055-6099997 / 0-55-6099997) +421-55-6099998 / 00421-55-6099998 (055-6099998 / 0-55-6099998) +421-55-6099999 / 00421-55-6099999 (055-6099999 / 0-55-6099999)