What is the historical significance of area code 415?

Area code 415 is one of the original North American area codes established in 1947, serving San Francisco and Marin County in California.

Which regulatory body oversees area code 415?

The California Public Utilities Commission (CPUC) oversees compliance with telecommunications regulations for area code 415.

What are the major cities covered by area code 415?

Major cities covered by area code 415 include San Francisco, Novato, San Anselmo, South San Francisco, and San Rafael.

When was area code 415 first implemented?

Area code 415 was first implemented in 1947.

What type of area code is 415?

Area code 415 is an overlay type.

What counties does area code 415 serve?

Area code 415 primarily serves San Francisco and Marin County, with partial coverage in San Mateo County.

What are the dialing requirements for area code 415?

Ten-digit dialing is mandatory for area code 415, and eleven-digit dialing is required from landlines.

Which area code was created from the northern part of 415 in 1959?

Area code 707 was created from the northern part of 415 in 1959.

What services are offered under area code 415?

Services offered under area code 415 include landline, wireless, and VoIP telecommunications services.

Why was area code 628 added to the region?

Area code 628 was added as an overlay to 415 in 2015 to accommodate the growing demand for phone numbers in the region.

What is the significance of San Francisco in area code 415?

San Francisco is a major city within area code 415, known for its iconic landmarks like the Golden Gate Bridge and Alcatraz Island.

How does area code 415 relate to the North American Numbering Plan?

Area code 415 is part of the North American Numbering Plan (NANP), which organizes telephone number allocation in North America.

What is the utilization rate of area code 415?

The utilization rate of area code 415 is not specified in the content provided.

What major carriers service area code 415?

Area code 415 is serviced by several major carriers, though specific names are not mentioned in the content provided.

What is the exhaust projection for area code 415?

The exhaust projection date for area code 415 is not specified in the content provided.

What are the geographic coordinates of Novato, CA in area code 415?

The geographic coordinates of Novato, CA are latitude 38.10742 and longitude -122.5697.

What is the role of NANPA in relation to area code 415?

NANPA ensures orderly number allocation and management in area code 415, in compliance with its guidelines.

When was area code 510 introduced and what was its impact on 415?

Area code 510 was introduced in 1991 for the East Bay, which affected the boundaries of area code 415.

How has area code 415 changed since its inception?

Since its inception, area code 415 has undergone several changes, including boundary redraws and the introduction of overlay area codes like 628 to meet demand.

Complete Guide to Area Code 415: Coverage, Cities, and Regulatory Insights

Area Code 415 is integral to California's telecommunications, serving San Francisco and Marin County. This guide provides a comprehensive overview of its technical specifications, geographic coverage, and regulatory framework.

What is Area Code 415 and Where is it Located?

Area Code 415 is part of the North American Numbering Plan (NANP), established in 1947. It primarily covers San Francisco and Marin County in California. Originally one of the first area codes, it has evolved to accommodate the region's growing population and technological demands.

Technical Specifications

NPA Code: 415
Type: Overlay
Implementation Date: 1947
State: California

Geographic Coverage and Major Cities

Area Code 415 serves a vibrant and densely populated region, including:

San Francisco: Known for its iconic landmarks like the Golden Gate Bridge and Alcatraz Island.
Marin County: Includes cities like Novato and San Rafael, offering picturesque landscapes and affluent communities.
San Mateo County (partially): Includes areas like South San Francisco, known for its biotech industry.

Key Cities in Area Code 415

City	Latitude	Longitude
Novato, CA	38.10742	-122.5697
San Anselmo, CA	37.97465	-122.56164
South San Francisco, CA	37.65466	-122.40775
San Rafael, CA	37.97353	-122.53109

Numbering Statistics

Total Numbers Available: [Number]
Utilization Rate: [Percentage]
Exhaust Projection: [Date]

Telecommunications Infrastructure

Major Carriers

The area code is serviced by several major carriers, ensuring a wide range of telecommunications services, including landline, wireless, and VoIP.

Services Offered

Landline: Traditional wired connections.
Wireless: Cellular services for mobile devices.
VoIP: Internet-based calling solutions.

Regulatory Framework

Regulatory Body: California Public Utilities Commission (CPUC) oversees compliance with telecommunications regulations.
Dialing Requirements: Ten-digit dialing is mandatory, and eleven-digit dialing is required from landlines.
NANPA Regulations: Compliance with NANPA guidelines ensures orderly number allocation and management.

Historical Milestones

1947: Area code 415 is established as one of the original North American area codes.
1950: Sacramento is assigned area code 916, redrawing the boundaries.
1959: Area code 707 is created from the northern part of 415.
1991: Area code 510 is introduced for the East Bay.
1997: Area code 650 is created, splitting San Francisco and San Mateo County.
2015: Area code 628 is added as an overlay to 415 to accommodate growing demand.

Conclusion

Area Code 415 remains a vital part of California's telecommunications network, reflecting the region's growth and technological advancement. The introduction of area code 628 ensures continued availability of phone numbers in this bustling area.

For more detailed regulatory information, visit the California Public Utilities Commission or NANPA. If you're interested in exploring more area codes in California, check out our related articles.