Overlay area code introduced in 1998 to serve Miami-Dade County and later extended to Monroe County, Florida, to provide additional numbering resources alongside 305.
Overlay area code introduced in 1998 to serve Miami-Dade County and later extended to Monroe County, Florida, to provide additional numbering resources alongside 305.
NPA 786 overlay introduced for 305
Permissive dialing period begins for 305/786 overlay
A permissive dialing period for the new 786 overlay on 305 began on March 1, 1998, allowing calls to be completed using either 7 or 10 digits.
Area code 786 activated in Miami-Dade County
Area code 786 was activated in Miami-Dade County on April 26, 1998, as a second area code overlaying 305 to address number exhaustion.
Announcement of area code 786 overlay for Miami-Dade County
Announcement on April 26, 1998, that area code 786 would be added as a second area code overlaying 305 in Miami-Dade County.
Mandatory 10-digit dialing for 305 and 786
On July 1, 1998, mandatory 10-digit dialing was implemented for all local calls within and between the 305 and 786 area codes in Miami-Dade County, Florida.
Permissive 10-digit dialing begins for 305/786 overlay
Permissive 10-digit dialing started on July 1, 1998, for the 305/786 overlay area to prepare customers for mandatory 10-digit dialing.
10-digit dialing put on hold in the Florida Keys
Plans for mandatory 10-digit dialing in the Florida Keys were put on hold as of September 30, 2000, delaying the overlay implementation.
Monroe County added to 786 overlay
Monroe County was added to the 786 overlay on September 1, 2001, expanding the overlay beyond Miami-Dade County.
NPA 786 overlay extended to Monroe County
Area code 786 was extended to cover Monroe County on September 1, 2001, expanding the overlay beyond Miami-Dade County.
Expansion of the Concentrated NPA 786 Overlay with NPA 305 (Florida)
Third area code 645 approved for Miami region
NPA 645 overlay on 305/786 announced
NPA 645 to Overlay NPA 305/786 (Florida)