Area Code 510

Local Presence for Oakland, Fremont, Newark, Hayward, and Richmond

You can increase your connection rate up to 30% by dialing from a local number.

Local Presence by Tenfold gives you one-click access from your existing phone system to a local number in the US area code 510 and more than 200 others.

Reach out to customers in Oakland, Fremont, Newark, Hayward, and Richmond.

Source: Wikipedia