Area Code +420-311-(230000...236999) located in All locations, Stredocesky (ST), more detail is as below. Place International Dialing Code : 420 International Prefix : 00 National Destination Code : 311 Subscriber Number From : 230000 Subscriber Number To : 236999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Michal Najman Click here to buy Czech Republic Area Code Database Other Information Language Code : cs (Czech) Country Number : 203 (Czech Republic) Country Code : CZ (Czech Republic) Region Code : ST Region Name : Stredocesky City : All locations Timezone : Europe/Prague Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 49.8800 Longitude : 14.9400 ‹ previous : +420-311-(220000...229999) next › : +420-311-(240000...249999) Dialling Instructions For trunk calls: - 311 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 420 311 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 236999 (Count: 7,000) Example: +420-311-230000 / 00420-311-230000 (311-230000 / -311-230000) +420-311-230001 / 00420-311-230001 (311-230001 / -311-230001) +420-311-230002 / 00420-311-230002 (311-230002 / -311-230002) +420-311-230003 / 00420-311-230003 (311-230003 / -311-230003) +420-311-230004 / 00420-311-230004 (311-230004 / -311-230004) ...+420-311-xxxxxx / 00420-311-xxxxxx (311-xxxxxx / -311-xxxxxx) ...+420-311-236995 / 00420-311-236995 (311-236995 / -311-236995) +420-311-236996 / 00420-311-236996 (311-236996 / -311-236996) +420-311-236997 / 00420-311-236997 (311-236997 / -311-236997) +420-311-236998 / 00420-311-236998 (311-236998 / -311-236998) +420-311-236999 / 00420-311-236999 (311-236999 / -311-236999)