Area Code +421-55-(6600000...6609999) 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 : 6600000 Subscriber Number To : 6609999 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-(6400000...6499999) next › : +421-55-(6610000...6619999) Dialling Instructions For trunk calls: 0 55 6600000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 55 6600000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6600000 ~ 6609999 (Count: 10,000) Example: +421-55-6600000 / 00421-55-6600000 (055-6600000 / 0-55-6600000) +421-55-6600001 / 00421-55-6600001 (055-6600001 / 0-55-6600001) +421-55-6600002 / 00421-55-6600002 (055-6600002 / 0-55-6600002) +421-55-6600003 / 00421-55-6600003 (055-6600003 / 0-55-6600003) +421-55-6600004 / 00421-55-6600004 (055-6600004 / 0-55-6600004) ...+421-55-xxxxxxx / 00421-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+421-55-6609995 / 00421-55-6609995 (055-6609995 / 0-55-6609995) +421-55-6609996 / 00421-55-6609996 (055-6609996 / 0-55-6609996) +421-55-6609997 / 00421-55-6609997 (055-6609997 / 0-55-6609997) +421-55-6609998 / 00421-55-6609998 (055-6609998 / 0-55-6609998) +421-55-6609999 / 00421-55-6609999 (055-6609999 / 0-55-6609999)