310 Area Code

Area Code	310
State	California
Country	United State
Code Type	General Purpose Code
In Service	Yes
Timezone	Pacific Standard Time (PST)
Overlay Complex	310/424
Assignment Date	31-AUG-90
In Service Date	02-NOV-91
Area Code	310

What is the 310 Area Code?

Area code 310 is located in California, within United State, serving the region's residents and businesses. The 310 area code was first assigned in 31-AUG-90 and has been in service since 02-NOV-91.

The 310 area code is part of an overlay complex, which includes the area codes 310/424. These codes all serve the same geographic region.

Cities in Area Code 310

Area codes of California

Further Details on the 310 Area Code

Where is the 310 Area Code Located?

Area code 310 serves the entire state of California in United State, providing phone services to both residential and business users. It covers urban, suburban, and rural areas alike, ensuring reliable communication across the region.

What time zone is area code 310 in?

Area code 310 is located in the Pacific Standard Time (PST) time zone. This designation indicates the predominant time zone for calls made within this area code.

When was area code 310 assigned and put into service?

Area code 310 was officially assigned on 31-AUG-90, signifying its designation for use in telecommunications, and it became operational on 02-NOV-91, allowing callers to begin using this area code for their dialing needs.

Is the 310 Area Code Still Active?

Yes, the 302 area code is still active and in service. It is the primary area code for all landline and mobile phones registered in Delaware. There are no overlay codes currently in place for the state.

What are the dialing requirements for making calls with area code 310?

For local calls within area code 310, the required dialing pattern is 1+10D. For toll calls, you'll need to dial 1+10D , where "D" indicates the number of digits to dial. When calling foreign NPAs from area code 310, local calls require 1+10D, and toll calls use 1+10D.

Data Sources: NANPA Area Code, U.S. Area Code Map