These addresses are no longer in use as Gizmo5 service was discontinued as of April 3, 2011. Because of this conflict, some outgoing calls from VoIP networks using a 10-digit SIP address could have been mistaken for calls originating from the actual 747 area code.
Public utilities code section 747 code#
The 747 area code conflicted with 10-digit Session Initiation Protocol addresses on some VoIP networks such as Gizmo5 (in the format 747NXXXXXX). North Ranch (part of Thousand Oaks/ Westlake Village)ħ47 area code conflict with 747 SIP addresses.Cities in the 747/818 area code Neighborhoods/districts in Los Angeles City
The first telephone number block to be assigned to area code 747 became effective on October 11, 2009. Since mid-April 2009, calls must be dialed with the area code and number otherwise, the call will not be completed (cell phone users can omit the "1"). There was a grace period starting Octoduring which callers could still complete calls using the seven-digit number. Callers within the 818 and 747 area codes would be required to dial the area code (including calls to the same area code cell phones could dial with or without the "1" prefix) for all calls. From that date, new numbers could be assigned to the new area code. On April 24, 2008, the CPUC decided that area code 747 would overlay area code 818 effective May 18, 2009. The new 747 area code would be used for numbers associated with new service. Public hearings were held, and the overall public sentiment was for an overlay rather than the split, since they could retain the 818 area code for their existing telephone numbers.
This proposal sat dormant until 2007, when the telephone industry and the California Public Utilities Commission began studying implementing this 818/747 split, or possibly an overlay of all of 818 with 747. In November 1999, it was proposed that "at some future date", a new 747 area code would split from 818, the new 747 serving the southern and western portions of the San Fernando Valley. Area code 626 was carved out of the eastern portion on June 14, 1997. The 818 area code entered service on January 7, 1984, making Los Angeles one of the first major cities to be split between multiple area codes. Because the population and phone usage of the Los Angeles metropolitan area greatly increased during the 1980s and 1990s, the 213 area code was split into several new area codes, including the 818 and 310 area codes. 3 747 area code conflict with 747 SIP addressesĪfter the standardization of American telephone area codes in 1947, almost all of Los Angeles County used the 213 area code.2.1 Neighborhoods/districts in Los Angeles City.