Area code 510 covers part of Californiastate, covering most of Alameda, Contra Costa counties. It was started on Jan 01, 2000. This region follows US/Pacific + Daylight Savings timezone. Other popular area codes that belong to California state include 209, 213, 310, 323, 408, 415, 424, 442, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 747, 760, 805, 818, 831, 858, 909, 916, 925, 949, 951.
Date Changed | Change Details |
May 12, 2014 | Area code 510-296 was introduced on Apr 18, 2014 and subscribers are operational from May 12, 2014. |
Apr 18, 2014 | Area code 510-298 was introduced on Mar 20, 2013 and subscribers are operational from Apr 18, 2014. |
Mar 28, 2014 | Area code 510-256 was introduced on Apr 10, 2007 and subscribers are operational from Mar 28, 2014. |
Mar 24, 2014 | Area code 510-210 was introduced on Jan 21, 2013 and subscribers are operational from Mar 24, 2014. |
Mar 21, 2014 | Area code 510-255 was introduced on Aug 16, 2012 and subscribers are operational from Mar 21, 2014. |
Mar 20, 2014 | Area code 510-244 was introduced on Aug 16, 2011 and subscribers are operational from Mar 20, 2014. |
Area Code | City | County | Population | Network Operator |
510-200-9 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-200-0 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-200-6 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-200-8 | San Francisco | Alameda | 151,027 | Bandwidth.com CLEC LLC - CA |
510-200-0 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-200-5 | San Francisco | Alameda | 151,027 | YMax Communications Corporation - CA |
510-201-0 | San Jose | Alameda | 151,027 | Peerless Network of California LLC - CA |
510-202 | Hayward | Alameda | 151,027 | American Messaging (AM) Inc |
510-204 | Berkeley | Alameda | 151,027 | Pacific Bell Telephone Company |
510-205 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-206 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-207 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-208 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-209 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-210-4 | Oakland | Contra Costa | 104,902 | Sprint Spectrum LP |
510-210-7 | Oakland | Contra Costa | 104,902 | T-Mobile USA Inc |
510-210-2 | Pleasanton | Contra Costa | 104,902 | Cellco Partnership dba Verizon Wireless - CA |
510-210-0 | San Francisco | Contra Costa | 104,902 | Bandwidth.com CLEC LLC - CA |
510-210-9 | San Jose | Contra Costa | 104,902 | Peerless Network of California LLC - CA |
510-210-6 | Santa Rosa | Contra Costa | 104,902 | Sonic Telecom LLC - CA |
510-211 | 955,213 | Community Support And Referral Services | ||
510-212 | Livermore | Alameda | 151,027 | USA Mobility Wireless Inc |
510-213-0 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-213-8 | San Francisco | Alameda | 151,027 | Bandwidth.com CLEC LLC - CA |
510-213-7 | San Francisco | Alameda | 151,027 | CF Communications LLC dba Telekenex - CA |
510-213-6 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-214-0 | Hayward | Alameda | 151,027 | MCI Worldcom Communications Inc - CA |
510-214-6 | San Francisco | Alameda | 151,027 | Bandwidth.com CLEC LLC - CA |
510-214-4 | San Francisco | Alameda | 151,027 | CF Communications LLC dba Telekenex - CA |
510-214-8 | San Francisco | Alameda | 151,027 | O1 Communications Inc - CA |
510-214-7 | San Francisco | Alameda | 151,027 | YMax Communications Corporation - CA |
510-215 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-216 | Livermore | Alameda | 151,027 | USA Mobility Wireless Inc |
510-217-8 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-217-3 | Oakland | Alameda | 151,027 | Teleport Communications Group - San Francisco |
510-217-0 | San Francisco | Alameda | 151,027 | Teleport Communications Group - San Francisco |
510-218 | Livermore | Alameda | 151,027 | USA Mobility Wireless Inc |
510-219 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-220 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-221-4 | Fremont | Contra Costa | 104,902 | XO California Inc |
510-221-0 | Oakland | Contra Costa | 104,902 | Sprint Spectrum LP |
510-221-5 | San Carlos | Contra Costa | 104,902 | Creative Interconnect Communications LLC - CA |
510-221-6 | San Francisco | Contra Costa | 104,902 | Bandwidth.com CLEC LLC - CA |
510-221-8 | San Francisco | Contra Costa | 104,902 | New Cingular Wireless PCS LLC |
510-221-2 | San Jose | Contra Costa | 104,902 | U.S. Telepacific Corporation - CA |
510-222 | El Sobrante | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-223 | El Sobrante | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-224-2 | San Francisco | Contra Costa | 104,902 | 360networks (USA) Inc - CA |
510-224-5 | San Francisco | Contra Costa | 104,902 | Bandwidth.com CLEC LLC - CA |
510-224-0 | Santa Rosa | Contra Costa | 104,902 | Sprint Spectrum LP |
510-225-8 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-225-0 | San Francisco | Alameda | 151,027 | Allegiance Telecom Inc - CA |
510-226 | Fremont | Alameda | 151,027 | Pacific Bell Telephone Company |
510-227-6 | Fremont | Alameda | 151,027 | XO California Inc |
510-227-5 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-227-4 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-227-8 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-227-1 | Oakland | Alameda | 151,027 | Paetec Communications Inc - CA |
510-227-9 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-227-2 | San Francisco | Alameda | 151,027 | Cbeyond Communications LLC - CA |
510-227-0 | Walnut Creek | Alameda | 151,027 | tw telecom of california LP - CA |
510-228-9 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-228-0 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-228-4 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-229-0 | Berkeley | Alameda | 151,027 | Pacific Bell Telephone Company |
510-229-6 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-229-9 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-229-5 | San Francisco | Alameda | 151,027 | CF Communications LLC dba Telekenex - CA |
510-229-4 | San Francisco | Alameda | 151,027 | O1 Communications Inc - CA |
510-229-3 | San Francisco | Alameda | 151,027 | YMax Communications Corporation - CA |
510-230-4 | Hayward | Contra Costa | 104,902 | Comcast Phone of California LLC - CA |
510-230-6 | Oakland | Contra Costa | 104,902 | MetroPCS Inc |
510-230-0 | Oakland | Contra Costa | 104,902 | T-Mobile USA Inc |
510-230-3 | Pleasanton | Contra Costa | 104,902 | Cellco Partnership dba Verizon Wireless - CA |
510-230-2 | San Francisco | Contra Costa | 104,902 | Level 3 Communications LLC - CA |
510-230-8 | San Francisco | Contra Costa | 104,902 | New Cingular Wireless PCS LLC |
510-231 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-232 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-233 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-234 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-235 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-236 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-237 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-238 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-239-4 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-239-8 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-239-9 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-239-7 | San Francisco | Alameda | 151,027 | Bandwidth.com CLEC LLC - CA |
510-239-5 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-239-0 | San Jose | Alameda | 151,027 | Mpower Communications Corporation - CA |
510-240-2 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-240-4 | San Francisco | Alameda | 151,027 | AT&T Local |
510-240-9 | San Francisco | Alameda | 151,027 | Bandwidth.com CLEC LLC - CA |
510-240-5 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-240-7 | San Francisco | Alameda | 151,027 | O1 Communications Inc - CA |
510-240-6 | San Jose | Alameda | 151,027 | U.S. Telepacific Corporation - CA |
510-240-8 | Santa Rosa | Alameda | 151,027 | Sprint Spectrum LP |
510-240-0 | Walnut Creek | Alameda | 151,027 | tw telecom of california LP - CA |
510-242 | Richmond | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-243-0 | El Sobrante | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-243-5 | Hayward | Contra Costa | 104,902 | Comcast Phone of California LLC - CA |
510-244-7 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-244-5 | Oakland | Alameda | 151,027 | Teleport Communications Group - San Francisco |
510-245 | Hercules | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-246-7 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-246-8 | San Francisco | Alameda | 151,027 | 360networks (USA) Inc - CA |
510-247 | Hayward | Alameda | 151,027 | Pacific Bell Telephone Company |
510-248-8 | Fremont | Alameda | 151,027 | Pacific Bell Telephone Company |
510-248-9 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-249 | Fremont | Alameda | 151,027 | Pacific Bell Telephone Company |
510-250-0 | San Francisco | Alameda | 151,027 | Broadwing Communications LLC - CA |
510-250-9 | San Francisco | Alameda | 151,027 | SBC Internet Services Inc |
510-251 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-252 | Fremont | Alameda | 151,027 | Pacific Bell Telephone Company |
510-253-9 | Oakland | Contra Costa | 104,902 | MetroPCS Inc |
510-253-0 | San Francisco | Contra Costa | 104,902 | Level 3 Communications LLC - CA |
510-254-1 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-254-9 | San Francisco | Alameda | 151,027 | Mosaic Networx LLC - CA |
510-255-7 | Hayward | Contra Costa | 104,902 | Comcast Phone of California LLC - CA |
510-255-8 | Oakland | Contra Costa | 104,902 | Teleport Communications Group - San Francisco |
510-256-1 | Oakland | Contra Costa | 104,902 | Pac-West Telecomm Inc - CA |
510-256-9 | San Francisco | Contra Costa | 104,902 | Bandwidth.com CLEC LLC - CA |
510-256-2 | Sunnyvale | Contra Costa | 104,902 | Qwest Communications Company LLC |
510-257-8 | Fremont | Alameda | 151,027 | XO California Inc |
510-257-3 | San Francisco | Alameda | 151,027 | O1 Communications Inc - CA |
510-258-7 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-258-8 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-259-9 | Fremont | Alameda | 151,027 | XO California Inc |
510-259-8 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-260-0 | Hayward | Contra Costa | 104,902 | Comcast Phone of California LLC - CA |
510-260-7 | San Francisco | Contra Costa | 104,902 | New Cingular Wireless PCS LLC |
510-261 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-262 | El Sobrante | Contra Costa | 104,902 | Pacific Bell Telephone Company |
510-263-0 | Alameda | Alameda | 151,027 | Pacific Bell Telephone Company |
510-263-8 | San Francisco | Alameda | 151,027 | SBC Internet Services Inc |
510-264 | Hayward | Alameda | 151,027 | Pacific Bell Telephone Company |
510-265-0 | Hayward | Alameda | 151,027 | Pacific Bell Telephone Company |
510-266-0 | Hayward | Alameda | 151,027 | Pacific Bell Telephone Company |
510-267 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-268-0 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-269-0 | Hayward | Alameda | 151,027 | MCI Worldcom Communications Inc - CA |
510-269-6 | San Francisco | Alameda | 151,027 | Cbeyond Communications LLC - CA |
510-269-5 | San Francisco | Alameda | 151,027 | Pacific Centrex Services Inc - CA |
510-270-6 | San Francisco | Alameda | 151,027 | Cbeyond Communications LLC - CA |
510-270-7 | San Francisco | Alameda | 151,027 | Pacific Centrex Services Inc - CA |
510-271 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-272 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-273 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-274-3 | Oakland | Alameda | 151,027 | MetroPCS Inc |
510-274-7 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-274-4 | San Francisco | Alameda | 151,027 | Pacific Centrex Services Inc - CA |
510-275-9 | Hayward | Contra Costa | 104,902 | Comcast Phone of California LLC - CA |
510-275-7 | San Francisco | Contra Costa | 104,902 | Level 3 Communications LLC - CA |
510-276 | San Leandro | Alameda | 151,027 | Pacific Bell Telephone Company |
510-277-0 | Oakland | Alameda | 151,027 | Global Crossing Local Services Inc - CA |
510-277-5 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
510-278 | San Leandro | Alameda | 151,027 | Pacific Bell Telephone Company |
510-279-0 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-279-4 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-280-0 | Fremont | Alameda | 151,027 | XO California Inc |
510-280-4 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-281 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-282 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-283-6 | Fremont | Contra Costa | 104,902 | XO California Inc |
510-283-9 | San Francisco | Contra Costa | 104,902 | Bandwidth.com CLEC LLC - CA |
510-284-0 | Fremont | Alameda | 151,027 | Pacific Bell Telephone Company |
510-284-2 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-285-6 | Hayward | Alameda | 151,027 | Comcast Phone of California LLC - CA |
510-285-7 | Oakland | Alameda | 151,027 | T-Mobile USA Inc |
510-286 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-287-0 | Oakland | Alameda | 151,027 | Pacific Bell Telephone Company |
510-288 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-289 | San Francisco | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-290 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-291-0 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-292-0 | Albany | Alameda | 151,027 | Pacific Bell Telephone Company |
510-292-4 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-293 | Hayward | Alameda | 151,027 | Pacific Bell Telephone Company |
510-294-0 | Oakland | Alameda | 151,027 | Sprint Spectrum LP |
510-295-0 | Oakland | Alameda | 151,027 | Pac-West Telecomm Inc - CA |
510-295-4 | San Francisco | Alameda | 151,027 | Level 3 Communications LLC - CA |
510-296-7 | San Francisco | Contra Costa | 104,902 | 360networks (USA) Inc - CA |
510-296-2 | San Francisco | Contra Costa | 104,902 | O1 Communications Inc - CA |
510-297 | San Leandro | Alameda | 151,027 | Pacific Bell Telephone Company |
510-298-0 | Concord | Alameda | 151,027 | New Cingular Wireless PCS LLC |
510-298-3 | San Francisco | Alameda | 151,027 | Broadvox-CLEC LLC - CA |
510-299 | Pleasanton | Alameda | 151,027 | Cellco Partnership dba Verizon Wireless - CA |
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Lynda (blitzgurl125@hotmail.com) commented on
510-274-2022
This review was created at 2011-11-28T23:55
I received a call from this number but did not answer. A voice mail was left instead. According to the voice mail, the caller was a man named Joseph of Frontier Financial Group. He was informing me that he was performing an audit and this was an attempt to collect a debt. I have received many different messages from Joseph all asking me to call him back at (877) 683-5490. This is a SCAM. I have looked up the 877 number as well as the company and have found a great number of people have received the same calls and have verified that the company is only seeking to cash in on your personal information. If you receive a call from this number do NOT call back to verify information.
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