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510-203

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Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Examples: 206-739-5800, 206, 206-739, 48369
Raw Number510203
Basic Format510-203
NPA (Area Code)510
NXX203

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
510-203-0XXX6006CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CAFRNK MAINAS10/21/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-1XXX8826LEVEL 3 COMMUNICATIONS, LLC - CAFRNK MAINAS10/19/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-2XXX6006CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CAFRNK MAINAS10/21/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-3XXX6010NEW CINGULAR WIRELESS PCS, LLCFRNK MAINAS11/10/2015FREMONT-NEWARK:MAIN DACAWC11/20/2015
510-203-4XXX6010NEW CINGULAR WIRELESS PCS, LLCFRNK MAINAS09/30/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-5XXX6010NEW CINGULAR WIRELESS PCS, LLCFRNK MAINAS09/30/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-6XXX6010NEW CINGULAR WIRELESS PCS, LLCFRNK MAINAS09/30/2015FREMONT-NEWARK:MAIN DACAWC11/16/2015
510-203-7XXX6006CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CAFRNK MAINAS07/05/2016FREMONT-NEWARK:MAIN DACAWC07/30/2016
510-203-8XXX6529T-MOBILE USA, INC.FRNK MAINAS09/22/2015FREMONT-NEWARK:MAIN DACAWC11/15/2015
510-203-9XXX6529T-MOBILE USA, INC.FRNK MAINAS09/22/2015FREMONT-NEWARK:MAIN DACAWC11/15/2015
510-203-XXXX6529T-MOBILE USA, INC.FRNK MAINAS09/22/2015FREMONT-NEWARK:MAIN DACA

Business/Government Phones on the 510-203 Prefix

PhoneNameAddress
510-203-0455Lobo Landscape
510-203-8350Raven's Call Couples Counseling Retreats

Reports

Anonymous User from , CA

September 5, 2025 at 12:42 PM

510-203-5253 reported as a Robocall. Received on August 28, 2025 at 1:38 PM.

Anonymous User from Silver Springs, NV

June 2, 2025 at 6:07 PM

866-457-0181 reported as a Prerecorded Voice. Received on June 2, 2025 at 10:59 AM.
Unwanted call for Mortgage Loans Services
Caller ID indicated they called from 510-203-0079
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CA

January 30, 2025 at 3:16 PM

510-203-0950 reported as a Robocall. Received on January 20, 2025 at 12:00 AM.

Anonymous User from , CA

January 30, 2025 at 3:14 PM

510-203-0950 reported as a Robocall. Received on January 23, 2025 at 12:00 AM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Pleasant Hilll, California

July 26, 2024 at 3:01 PM

510-203-1040 reported as a Robocall. Received on July 26, 2024 at 7:26 AM.

Anonymous User from Berkeley, California

March 14, 2024 at 6:17 PM

510-203-7501 reported as a unwanted call. Received on March 14, 2024 at 12:03 PM.
Call for Dropped call or no message

Anonymous User from San Rafael, California

October 19, 2023 at 1:18 AM

510-203-6146 reported as a Robocall. Received on October 18, 2023 at 4:26 PM.

Anonymous User from Oakland, California

September 18, 2023 at 6:45 PM

510-203-1804 reported as a Robocall. Received on September 1, 2023 at 1:01 PM.
Call for Computer & technical support

Anonymous User from Oakland, California

May 30, 2023 at 7:51 PM

510-203-2035 reported as a Robocall. Received on May 30, 2023 at 4:40 PM.

Anonymous User from Middletown, Pennsylvania

May 20, 2023 at 9:42 PM

510-203-7985 reported as a Robocall. Received on May 19, 2023 at 2:11 PM.
Call for Dropped call or no message

Anonymous User from Oakland, California

May 16, 2023 at 5:19 PM

510-203-9130 reported as a Robocall. Received on May 16, 2023 at 8:27 AM.

Anonymous User from , CA

April 19, 2023 at 8:36 PM

510-203-9573 reported as a Live Voice or Other. Received on April 19, 2023 at 2:58 PM.
Call for No Subject Provided

Anonymous User from Richmond, California

February 21, 2023 at 6:25 PM

510-203-8161 reported as a Live Voice or Other. Received on February 21, 2023 at 1:00 PM.

Anonymous User from Newark, California

January 16, 2023 at 1:51 PM

510-203-4000 reported as a Live Voice or Other. Received on January 16, 2023 at 6:17 AM.
Call for Medical & prescriptions

Anonymous User from Castro Valley, California

September 26, 2022 at 12:02 PM

510-203-8693 reported as a Live Voice or Other. Received on September 26, 2022 at 8:40 AM.

Anonymous User from , CA

July 30, 2022 at 8:06 PM

510-203-5083 reported as a Robocall. Received on July 30, 2022 at 7:46 AM.
Call for No Subject Provided

Most 'popular' numbers on this prefix:

510-203-0XXX: 510-203-0000 | 510-203-0001 | 510-203-0002 | 510-203-0010 | 510-203-0011 | 510-203-0015 | 510-203-0402 | 510-203-0403 | 510-203-0409 | 510-203-0452 | 510-203-0453 | 510-203-0459 | 510-203-0902 | 510-203-0907 | 510-203-0909 | 510-203-0952 | 510-203-0957 | 510-203-0959 |
510-203-1XXX: 510-203-1040 | 510-203-1045 | 510-203-1047 | 510-203-1800 | 510-203-1803 | 510-203-1808 | 510-203-1809 |
510-203-2XXX: 510-203-2000 | 510-203-2030 | 510-203-2035 | 510-203-2037 | 510-203-2053 | 510-203-2077 | 510-203-2103 | 510-203-2107 | 510-203-2109 | 510-203-2169 | 510-203-2188 | 510-203-2189 |
510-203-3XXX: 510-203-3500 | 510-203-3508 | 510-203-3540 | 510-203-3545 | 510-203-3547 | 510-203-3600 | 510-203-3630 | 510-203-3636 | 510-203-3637 | 510-203-3658 | 510-203-3667 |
510-203-4XXX: 510-203-4000 | 510-203-4002 | 510-203-4007 | 510-203-4040 | 510-203-4062 |
510-203-5XXX: 510-203-5080 | 510-203-5083 | 510-203-5088 | 510-203-5417 | 510-203-5476 | 510-203-5489 | 510-203-5493 | 510-203-5494 | 510-203-5498 |
510-203-6XXX: 510-203-6000 | 510-203-6008 | 510-203-6020 | 510-203-6080 | 510-203-6083 | 510-203-6088 | 510-203-6140 | 510-203-6141 | 510-203-6143 | 510-203-6191 | 510-203-6196 | 510-203-6197 |
510-203-7XXX: 510-203-7500 | 510-203-7506 | 510-203-7507 | 510-203-7983 | 510-203-7987 | 510-203-7989 | 510-203-7995 | 510-203-7997 | 510-203-7998 |
510-203-8XXX: 510-203-8163 | 510-203-8166 | 510-203-8167 | 510-203-8181 | 510-203-8186 | 510-203-8187 | 510-203-8303 | 510-203-8350 | 510-203-8353 | 510-203-8357 | 510-203-8383 | 510-203-8387 | 510-203-8692 | 510-203-8696 | 510-203-8697 | 510-203-8698 | 510-203-8699 |
510-203-9XXX: 510-203-9130 | 510-203-9134 | 510-203-9137 | 510-203-9192 | 510-203-9195 | 510-203-9197 | 510-203-9500 | 510-203-9550 | 510-203-9570 | 510-203-9575 | 510-203-9577 | 510-203-9670 | 510-203-9676 | 510-203-9678 | 510-203-9696 |