Area Code +33-457-(810000...819999) located in Voiron, ISERE (38), more detail is as below. Place International Dialing Code : 33 International Prefix : 00 National Prefix : 0 National Destination Code : 457 Subscriber Number From : 810000 Subscriber Number To : 819999 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 : COMPLETEL Click here to buy France Area Code Database Other Information Language Code : fr (French) Country Number : 250 (France) Country Code : FR (France) Region Code : 38 Region Name : ISERE City : Voiron Timezone : Europe/Paris Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 45.3600 Longitude : 5.5900 ‹ previous : +33-457-(800000...809999) next › : +33-457-(820000...829999) Dialling Instructions For trunk calls: 0 457 810000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 33 457 810000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 810000 ~ 819999 (Count: 10,000) Example: +33-457-810000 / 0033-457-810000 (0457-810000 / 0-457-810000) +33-457-810001 / 0033-457-810001 (0457-810001 / 0-457-810001) +33-457-810002 / 0033-457-810002 (0457-810002 / 0-457-810002) +33-457-810003 / 0033-457-810003 (0457-810003 / 0-457-810003) +33-457-810004 / 0033-457-810004 (0457-810004 / 0-457-810004) ...+33-457-xxxxxx / 0033-457-xxxxxx (0457-xxxxxx / 0-457-xxxxxx) ...+33-457-819995 / 0033-457-819995 (0457-819995 / 0-457-819995) +33-457-819996 / 0033-457-819996 (0457-819996 / 0-457-819996) +33-457-819997 / 0033-457-819997 (0457-819997 / 0-457-819997) +33-457-819998 / 0033-457-819998 (0457-819998 / 0-457-819998) +33-457-819999 / 0033-457-819999 (0457-819999 / 0-457-819999)