Area Code +30-231-(7700000...7709999) located in Thessaloniki, Thessaloniki (54), more detail is as below. Place International Dialing Code : 30 International Prefix : 00 National Prefix : 0 National Destination Code : 231 Subscriber Number From : 7700000 Subscriber Number To : 7709999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : VOICENET Click here to buy Greece Area Code Database Other Information Language Code : el (Greek) Country Number : 300 (Greece) Country Code : GR (Greece) Region Code : 54 Region Name : Thessaloniki City : Thessaloniki Timezone : Europe/Athens Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 40.6400 Longitude : 22.9400 ‹ previous : +30-231-(7000000...7009999) next › : +30-231-(7710000...7719999) Dialling Instructions For trunk calls: - 231 7700000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 231 7700000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7700000 ~ 7709999 (Count: 10,000) Example: +30-231-7700000 / 0030-231-7700000 (0231-7700000 / 0-231-7700000) +30-231-7700001 / 0030-231-7700001 (0231-7700001 / 0-231-7700001) +30-231-7700002 / 0030-231-7700002 (0231-7700002 / 0-231-7700002) +30-231-7700003 / 0030-231-7700003 (0231-7700003 / 0-231-7700003) +30-231-7700004 / 0030-231-7700004 (0231-7700004 / 0-231-7700004) ...+30-231-xxxxxxx / 0030-231-xxxxxxx (0231-xxxxxxx / 0-231-xxxxxxx) ...+30-231-7709995 / 0030-231-7709995 (0231-7709995 / 0-231-7709995) +30-231-7709996 / 0030-231-7709996 (0231-7709996 / 0-231-7709996) +30-231-7709997 / 0030-231-7709997 (0231-7709997 / 0-231-7709997) +30-231-7709998 / 0030-231-7709998 (0231-7709998 / 0-231-7709998) +30-231-7709999 / 0030-231-7709999 (0231-7709999 / 0-231-7709999)