Area Code +421-57-(4000000...4099999) located in Humenné, Prešovský (PV), more detail is as below. Place International Dialing Code : 421 International Prefix : 00 National Prefix : 0 National Destination Code : 57 Subscriber Number From : 4000000 Subscriber Number To : 4099999 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 : PV Region Name : Prešovský City : Humenné Timezone : Europe/Bratislava Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 48.9300 Longitude : 21.9100 ‹ previous : +421-57-(3900000...3999999) next › : +421-57-(4400000...4499999) Dialling Instructions For trunk calls: 0 57 4000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 421 57 4000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4000000 ~ 4099999 (Count: 100,000) Example: +421-57-4000000 / 00421-57-4000000 (057-4000000 / 0-57-4000000) +421-57-4000001 / 00421-57-4000001 (057-4000001 / 0-57-4000001) +421-57-4000002 / 00421-57-4000002 (057-4000002 / 0-57-4000002) +421-57-4000003 / 00421-57-4000003 (057-4000003 / 0-57-4000003) +421-57-4000004 / 00421-57-4000004 (057-4000004 / 0-57-4000004) ...+421-57-xxxxxxx / 00421-57-xxxxxxx (057-xxxxxxx / 0-57-xxxxxxx) ...+421-57-4099995 / 00421-57-4099995 (057-4099995 / 0-57-4099995) +421-57-4099996 / 00421-57-4099996 (057-4099996 / 0-57-4099996) +421-57-4099997 / 00421-57-4099997 (057-4099997 / 0-57-4099997) +421-57-4099998 / 00421-57-4099998 (057-4099998 / 0-57-4099998) +421-57-4099999 / 00421-57-4099999 (057-4099999 / 0-57-4099999)