It’s all part of the rollout of the new 628 area code which will coexist with the current 415 area code.

Starting Saturday, the "415" area code makes way for "628" and that means big changes for phone customers in Marin and San Francisco.Even when dialing within 415 territory ...

New phone dialing procedures caused some confusion over the weekend for a few dozen people who called 911 because their phone lines would not connect to others with a 415 area code.

Take the 707 area code, which covers many counties in Northern California. These areas were originally in the 415 area code, but 707 was added in 1959 to keep up with demand.

New phone-dialing procedures in anticipation of the new 628 area code rolled out this weekend in San Francisco with some confusion, but overall, no major incidents were reported in connection with ...

The "415" area code in Marin and San Francisco counties is expected to use up all available "prefixes," which are the first three numbers after the area code, by October 2015.

The "415" area code in Marin and San Francisco counties is expected to use up all available "prefixes," which are the first three numbers after the area code, by October 2015.

The "415" area code in Marin and San Francisco counties is expected to use up all available "prefixes," which are the first three numbers after the area code, by October 2015.