Area Code +30-21-(00030000...00039999) located in Athens, Attiki (A1), more detail is as below. Place International Dialing Code : 30 International Prefix : 00 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 00030000 Subscriber Number To : 00039999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : OTE S.A Click here to buy Greece Area Code Database Other Information Language Code : el (Greek) Country Number : 300 (Greece) Country Code : GR (Greece) Region Code : A1 Region Name : Attiki City : Athens Timezone : Europe/Athens Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 37.9800 Longitude : 23.7200 ‹ previous : +30-21-(00020000...00029999) next › : +30-21-(00040000...00049999) Dialling Instructions For trunk calls: - 21 00030000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 00030000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 00030000 ~ 00039999 (Count: 10,000) Example: +30-21-00030000 / 0030-21-00030000 (021-00030000 / 0-21-00030000) +30-21-00030001 / 0030-21-00030001 (021-00030001 / 0-21-00030001) +30-21-00030002 / 0030-21-00030002 (021-00030002 / 0-21-00030002) +30-21-00030003 / 0030-21-00030003 (021-00030003 / 0-21-00030003) +30-21-00030004 / 0030-21-00030004 (021-00030004 / 0-21-00030004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-00039995 / 0030-21-00039995 (021-00039995 / 0-21-00039995) +30-21-00039996 / 0030-21-00039996 (021-00039996 / 0-21-00039996) +30-21-00039997 / 0030-21-00039997 (021-00039997 / 0-21-00039997) +30-21-00039998 / 0030-21-00039998 (021-00039998 / 0-21-00039998) +30-21-00039999 / 0030-21-00039999 (021-00039999 / 0-21-00039999)