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  1. Area Code Lookup
  2. Area code 510
  3. Prefix 921
  4. 21XX
510-921-22XX

Phone Number 510-921-21XX Information and Location Details

The 510-921-21XX area code prefix is located in San Jose, California including Hayward, Oakland and was originally put into service on January 14th 2000. Run a search and find out who's calling you now.

TOTALS for the MONTH of January

Pacific Standard Time

04:14 AM

Current Time In This Area
This Page Has Been Viewed

2004

Times
Total Number of Searches

1769

For Phone Numbers in Area
People in Coverage Area Received

98M

Spam Calls

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Most Searched Area Codes:
Country

United States of America

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Largest City

San Jose

Timezone

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510-921 21XX ACTIVE PHONE NUMBERS DIRECTORY

Search for owner information and other data related to any phone number below.
(510) 921-2100People also searched - 5109212100landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-03-19
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(510) 921-2101People also searched - 5109212101landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-07-04
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(510) 921-2102People also searched - 5109212102landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-12-08
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(510) 921-2103People also searched - 5109212103landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-02-19
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(510) 921-2104People also searched - 5109212104landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-08-08
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(510) 921-2105People also searched - 5109212105landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-05-14
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(510) 921-2106People also searched - 5109212106landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-10-02
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(510) 921-2107People also searched - 5109212107landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-04-19
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(510) 921-2108People also searched - 5109212108landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-05-18
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(510) 921-2109People also searched - 5109212109landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-04-07
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(510) 921-2110People also searched - 5109212110landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2020-07-03
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(510) 921-2111People also searched - 5109212111landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-10-18
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(510) 921-2112People also searched - 5109212112landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-10-31
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(510) 921-2113People also searched - 5109212113landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-02-20
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(510) 921-2114People also searched - 5109212114landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-07-20
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(510) 921-2115People also searched - 5109212115landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2024-04-18
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(510) 921-2116People also searched - 5109212116landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-08-27
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(510) 921-2117People also searched - 5109212117landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-02-27
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(510) 921-2118People also searched - 5109212118landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-10-15
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(510) 921-2119People also searched - 5109212119landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-12-28
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(510) 921-2120People also searched - 5109212120landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2010-12-23
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(510) 921-2121People also searched - 5109212121landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-07-20
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(510) 921-2122People also searched - 5109212122landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-10-24
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(510) 921-2123People also searched - 5109212123landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-04-03
Unknown
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Report : hey
(510) 921-2124People also searched - 5109212124landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2015-01-27
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(510) 921-2125People also searched - 5109212125landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2020-11-20
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(510) 921-2126People also searched - 5109212126landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-12-08
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(510) 921-2127People also searched - 5109212127landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-03-05
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(510) 921-2128People also searched - 5109212128landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-11-05
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(510) 921-2129People also searched - 5109212129landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2024-03-12
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(510) 921-2130People also searched - 5109212130landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-06-11
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(510) 921-2131People also searched - 5109212131landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-08-20
Unknown
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Report : I didn't answer. No message.
(510) 921-2132People also searched - 5109212132landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-10-27
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(510) 921-2133People also searched - 5109212133landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-06-13
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(510) 921-2134People also searched - 5109212134landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-09-29
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(510) 921-2135People also searched - 5109212135landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-06-11
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(510) 921-2136People also searched - 5109212136landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-12-09
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(510) 921-2137People also searched - 5109212137landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-01-27
Unknown
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Report : After I ran the number through both Yaho... See More
(510) 921-2138People also searched - 5109212138landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-09-03
Unknown
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Report : Hey, I'm now up to 19 calls from this nu... See More
(510) 921-2139People also searched - 5109212139landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-01-19
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(510) 921-2140People also searched - 5109212140landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-03-15
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(510) 921-2141People also searched - 5109212141landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-11-05
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(510) 921-2142People also searched - 5109212142landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-06-03
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(510) 921-2143People also searched - 5109212143landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-10-03
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(510) 921-2144People also searched - 5109212144landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-01-27
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(510) 921-2145People also searched - 5109212145landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-09-15
Neutral
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Report : Received this msg. “Mollie been diagno... See More
(510) 921-2146People also searched - 5109212146landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-02-20
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(510) 921-2147People also searched - 5109212147landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-09-30
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(510) 921-2148People also searched - 5109212148landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2015-11-29
Unknown
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Report : Call your local FBI immediately! 681-66... See More
(510) 921-2149People also searched - 5109212149landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-01-13
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(510) 921-2150People also searched - 5109212150landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-07-05
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(510) 921-2151People also searched - 5109212151landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-11-29
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(510) 921-2152People also searched - 5109212152landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-07-11
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(510) 921-2153People also searched - 5109212153landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2011-06-12
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(510) 921-2154People also searched - 5109212154landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-09-18
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(510) 921-2155People also searched - 5109212155landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-04-06
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(510) 921-2156People also searched - 5109212156landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-01-11
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(510) 921-2157People also searched - 5109212157landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2020-01-17
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(510) 921-2158People also searched - 5109212158landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-07-27
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(510) 921-2159People also searched - 5109212159landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2016-10-13
Unknown
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Report : Left no message.
(510) 921-2160People also searched - 5109212160landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2024-11-28
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(510) 921-2161People also searched - 5109212161landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-11-05
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(510) 921-2162People also searched - 5109212162landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-12-12
Neutral
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Report : Debt Collector - Account Control Technol... See More
(510) 921-2163People also searched - 5109212163landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2017-04-11
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(510) 921-2164People also searched - 5109212164landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-04-22
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(510) 921-2165People also searched - 5109212165landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-03-22
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(510) 921-2166People also searched - 5109212166landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-09-16
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(510) 921-2167People also searched - 5109212167landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2011-09-14
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(510) 921-2168People also searched - 5109212168landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2020-08-07
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(510) 921-2169People also searched - 5109212169landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-10-15
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(510) 921-2170People also searched - 5109212170landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2011-06-15
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(510) 921-2171People also searched - 5109212171landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-02-18
Unknown
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Report : Case number being sued
(510) 921-2172People also searched - 5109212172landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-04-07
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(510) 921-2173People also searched - 5109212173landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-10-23
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(510) 921-2174People also searched - 5109212174landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-03-27
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(510) 921-2175People also searched - 5109212175landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-07-23
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(510) 921-2176People also searched - 5109212176landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2010-07-30
Unknown
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Report : Constantly calls
(510) 921-2177People also searched - 5109212177landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-09-18
Neutral
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Report : Got a text stating to call 850-390-4724 ... See More
(510) 921-2178People also searched - 5109212178landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2011-08-12
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(510) 921-2179People also searched - 5109212179landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-03-04
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(510) 921-2180People also searched - 5109212180landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2011-03-23
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(510) 921-2181People also searched - 5109212181landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2024-09-14
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(510) 921-2182People also searched - 5109212182landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-12-22
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(510) 921-2183People also searched - 5109212183landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2020-04-11
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(510) 921-2184People also searched - 5109212184landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-12-11
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(510) 921-2185People also searched - 5109212185landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-01-16
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(510) 921-2186People also searched - 5109212186landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-05-03
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(510) 921-2187People also searched - 5109212187landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-01-03
Unknown
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Report : Caller ID says "TOLL FREE CALL". Left n... See More
(510) 921-2188People also searched - 5109212188landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2025-02-25
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(510) 921-2189People also searched - 5109212189landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2018-01-31
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(510) 921-2190People also searched - 5109212190landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2015-05-16
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(510) 921-2191People also searched - 5109212191landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-09-24
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(510) 921-2192People also searched - 5109212192landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2021-05-10
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(510) 921-2193People also searched - 5109212193landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2012-06-06
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(510) 921-2194People also searched - 5109212194landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2014-07-05
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(510) 921-2195People also searched - 5109212195landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2023-01-07
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(510) 921-2196People also searched - 5109212196landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2019-10-26
Dangerous
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Report : Same as the others - they call my phone ... See More
(510) 921-2197People also searched - 5109212197landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2022-07-12
Unknown
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Report : Picked up phone and there was silence on... See More
(510) 921-2198People also searched - 5109212198landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2013-09-04
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(510) 921-2199People also searched - 5109212199landline and VOIP
Carrier : Teleport Communications Group - San Francisco
Last Validated : 2024-07-01
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The 510-921-21XX area code prefix is located in San Jose, California including Hayward, Oakland and was originally put into service on January 14th 2000. Run a search and find out who's calling you now.

Recently Searched Numbers

No additional information reported for these searched numbers. Received a call from any phone number listed below? Please consider helping the community by reporting your experience.

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Most searched numbers

Cell
All TimeThis Month
510-921-2154 First seen 2012-05-03510-921-2126 First seen 2023-11-05
510-921-2138 First seen 2012-03-18510-921-2188 First seen 2021-05-01
510-921-2124 First seen 2017-03-24510-921-2184 First seen 2018-05-15
510-921-2191 First seen 2010-09-30510-921-2131 First seen 2024-07-12
510-921-2151 First seen 2021-07-20510-921-2196 First seen 2010-09-09
Landline
All TimeThis Month
510-921-2113 First seen 2022-12-23510-921-2142 First seen 2022-07-06
510-921-2150 First seen 2010-01-30510-921-2178 First seen 2018-10-02
510-921-2164 First seen 2013-09-23510-921-2166 First seen 2012-09-20
510-921-2176 First seen 2025-05-10510-921-2112 First seen 2015-10-06
510-921-2199 First seen 2014-10-02510-921-2165 First seen 2024-01-20

Cities With coverage

CITY LIST
Alameda
Albany
Berkeley
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El Sobrante
Fremont
Hayward
Hercules
Oakland
Richmond
San Francisco
San Jose
San Leandro
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Walnut Creek