Area Code +421-55-(7800000...7899999) 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 : 7800000 Subscriber Number To : 7899999 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-(7300000...7399999) next › : +421-55-(7900000...7999999) Dialling Instructions For trunk calls: 0 55 7800000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 55 7800000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7800000 ~ 7899999 (Count: 100,000) Example: +421-55-7800000 / 00421-55-7800000 (055-7800000 / 0-55-7800000) +421-55-7800001 / 00421-55-7800001 (055-7800001 / 0-55-7800001) +421-55-7800002 / 00421-55-7800002 (055-7800002 / 0-55-7800002) +421-55-7800003 / 00421-55-7800003 (055-7800003 / 0-55-7800003) +421-55-7800004 / 00421-55-7800004 (055-7800004 / 0-55-7800004) ...+421-55-xxxxxxx / 00421-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+421-55-7899995 / 00421-55-7899995 (055-7899995 / 0-55-7899995) +421-55-7899996 / 00421-55-7899996 (055-7899996 / 0-55-7899996) +421-55-7899997 / 00421-55-7899997 (055-7899997 / 0-55-7899997) +421-55-7899998 / 00421-55-7899998 (055-7899998 / 0-55-7899998) +421-55-7899999 / 00421-55-7899999 (055-7899999 / 0-55-7899999)