Area Code 504-365 located in GRETNA, JEFFERSON, LA, more detail is as below. Place NPA (Numbering Plan Area) : 504 NXX (Local Number Prefix) : 365 City : GRETNA County : JEFFERSON State : LA (Louisiana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 22051 LATA (Local Access Transport Area) : 490 Rate Center : NEWORLEANS ZIP Code Count : 246 ZIP Code Frequency : 20 ZIP Code : 70053 Other Information NPANXX : 504365 Switch CLLI (Common Language Location Identifier) : NWORLARVDS0 MSA CBSA (Core Based Statistical Area) : New Orleans-Metairie-Kenner, LA MSA CBSA Code (Core Based Statistical Area) : 35380 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL OCN (Operating Company Number) : 9419 Coverage Area Name : NEW ORLEANS Latitude : 29.9291 Longitude : -90.0456 ‹ previous : 504-365 next › : 504-365 Telephone Number List 504-365-0000 ~ 504-365-9999