Area Code +421-55-(6100000...6199999) 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 : 6100000 Subscriber Number To : 6199999 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-(6000000...6099999) next › : +421-55-(6200000...6299999) Dialling Instructions For trunk calls: 0 55 6100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 55 6100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6100000 ~ 6199999 (Count: 100,000) Example: +421-55-6100000 / 00421-55-6100000 (055-6100000 / 0-55-6100000) +421-55-6100001 / 00421-55-6100001 (055-6100001 / 0-55-6100001) +421-55-6100002 / 00421-55-6100002 (055-6100002 / 0-55-6100002) +421-55-6100003 / 00421-55-6100003 (055-6100003 / 0-55-6100003) +421-55-6100004 / 00421-55-6100004 (055-6100004 / 0-55-6100004) ...+421-55-xxxxxxx / 00421-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+421-55-6199995 / 00421-55-6199995 (055-6199995 / 0-55-6199995) +421-55-6199996 / 00421-55-6199996 (055-6199996 / 0-55-6199996) +421-55-6199997 / 00421-55-6199997 (055-6199997 / 0-55-6199997) +421-55-6199998 / 00421-55-6199998 (055-6199998 / 0-55-6199998) +421-55-6199999 / 00421-55-6199999 (055-6199999 / 0-55-6199999)