Area code 628 serves the San Francisco Bay Area, specifically overlaying area code 415. Introduced in 2015, it was created to address the increasing demand for phone numbers in the region, driven by both population growth and the proliferation of mobile devices.
The 628 area code encompasses a dense urban landscape, including San Francisco and parts of Marin County, making it one of the most internationally recognized and densely populated regions in the United States. The overlay of 628 over 415 means that all existing 415 numbers remain active, while new numbers issued in the region will use either area code. This dual-code system requires ten-digit dialing for all calls within the area, a practice that was fully adopted following the introduction of 628.
With roots dating back to 1947, when area code 415 first emerged, the area has evolved significantly, reflecting shifts in technology, telecommunication needs, and demographic patterns. The introduction of area code 628 illustrates the ongoing adaptation of telecommunications infrastructure to meet changing demands. As a part of the broader telecommunications landscape, area code 628 highlights the dynamic nature of phone number allocation and management in urban centers.
Cities with 628 Area Code: |
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Novato (CA) |
San Anselmo (CA) |
San Rafael (CA) |
South San Francisco (CA) |
Area code 628 covers the city of San Rafael, California. Find out essential info for calls to and from this area code.
If you receive a phone call with the first 3 digits 628 in the United States, you should know that they could belong to Novato (CA), San Anselmo (CA), San Rafael (CA), South San Francisco (CA).
Dialing the area code 628 from another state in the United States is considered a long-distance call. Here’s how to make the call: First, dial the area code for 628. Each state, and sometimes specific cities within a state, has unique area codes. Then, enter the 7-digit phone number of the person or business you’re trying to reach. If you’re calling from a landline, check with your provider, as long-distance charges may apply. However, most mobile carriers in the U.S. offer nationwide calling without additional fees. Alternatively, you can use VoIP or internet-based calling apps, like Skype, Zoom, or WhatsApp, to bypass traditional long-distance charges. The number you want to reach should look like this: 1-(AreaCode)-111-2222.
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