830-521

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Phone Lookup Top Complaints Area Codes NPA-NXX iMessage

Raw Number	830521
Basic Format	830-521
NPA (Area Code)	830
NXX	521

Call Routing Data

NPA-NXX-X	OCN	Company	Rate Center	Use Type	Assign Date	State	Region	Block Effective Date	Block Available Date
830-521-0XXX	6534	NEW CINGULAR WIRELESS PCS, LLC - IL	CASTROVL	RT		TX	SW
830-521-1XXX	7715	MATRIX TELECOM, LLC. S/I/I TNCI - TX	CASTROVL	AV		TX	SW		08/14/2024
830-521-2XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	01/22/2016	TX	SW	02/16/2016
830-521-3XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	07/11/2016	TX	SW	08/06/2016
830-521-4XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	05/04/2016	TX	SW	06/02/2016
830-521-5XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	07/11/2016	TX	SW	08/06/2016
830-521-6XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	05/04/2016	TX	SW	06/02/2016
830-521-7XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	03/14/2016	TX	SW	04/11/2016
830-521-8XXX	903C	ONVOY, LLC - TX	CASTROVL	AS	03/14/2016	TX	SW	04/11/2016
830-521-9XXX	6534	NEW CINGULAR WIRELESS PCS, LLC - IL	CASTROVL	AS	05/09/2016	TX	SW	05/19/2016
830-521-XXXX	7715	MATRIX TELECOM, LLC. S/I/I TNCI - TX	CASTROVL	AS		TX

Business/Government Phones on the 830-521 Prefix

Phone	Name	Address
830-521-2267	Onsite Pro Can
830-521-5563	Voda Cleaning & Restoration of North San Antonio
830-521-6081	Castroville Elementary School	1000 Madrid Street Castroville 78009 US
830-521-6082	LaCoste Elementary School	16069 Uvalde Street La Coste US
830-521-6086	Medina Valley Middle School	8395 FM 471 South Castroville 78009 US
830-521-6087	Medina Valley High School	8365 FM 471 South Castroville 78009 US

Reports

Anonymous User from San Marcos, Texas

April 8, 2026 at 6:43 AM

830-521-5240 reported as a Live Voice or Other. Received on April 7, 2026 at 12:00 AM.

Anonymous User from San Marcos, Texas

April 3, 2026 at 7:52 PM

830-521-5240 reported as a Live Voice or Other. Received on April 3, 2026 at 6:41 PM.
Call for Dropped call or no message

Anonymous User from San Marcos, Texas

March 24, 2026 at 1:41 PM

830-521-5240 reported as a Live Voice or Other. Received on March 24, 2026 at 12:29 AM.

Anonymous User from , TX

March 23, 2026 at 12:21 PM

830-521-5880 reported as a Robocall. Received on March 23, 2026 at 11:02 AM.
Call for No Subject Provided

Anonymous User from Lacoste, Texas

March 19, 2026 at 11:07 AM

830-521-0355 reported as a Robocall. Received on March 18, 2026 at 1:57 PM.
Call for Dropped call or no message

Anonymous User from Lacoste, Texas

March 19, 2026 at 10:57 AM

830-521-0355 reported as a Robocall. Received on March 19, 2026 at 8:36 AM.
Call for Dropped call or no message

Anonymous User from San Marcos, Texas

March 17, 2026 at 9:07 PM

830-521-5240 reported as a Live Voice or Other. Received on March 17, 2026 at 7:51 PM.

Anonymous User from San Marcos, Texas

March 9, 2026 at 12:19 PM

830-521-5240 reported as a Live Voice or Other. Received on March 8, 2026 at 6:35 PM.

Anonymous User from San Marcos, Texas

March 9, 2026 at 12:16 PM

830-521-5240 reported as a Live Voice or Other. Received on March 9, 2026 at 10:46 AM.

Anonymous User from San Marcos, Texas

March 7, 2026 at 3:26 PM

830-521-5240 reported as a Live Voice or Other. Received on March 7, 2026 at 1:56 PM.

Anonymous User from Tarpley, Texas

February 19, 2026 at 9:07 AM

830-521-4445 reported as a Live Voice or Other. Received on February 17, 2026 at 4:33 PM.
Call for No Subject Provided

Anonymous User from Marble Falls, Texas

December 2, 2025 at 3:29 PM

830-521-3126 reported as a Robocall. Received on November 26, 2025 at 12:53 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , TX

November 15, 2025 at 6:22 PM

830-521-7376 reported as a Robocall. Received on October 25, 2025 at 7:52 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , GA

September 16, 2025 at 10:29 AM

830-521-7012 reported as a Robocall. Received on September 16, 2025 at 10:27 AM.

Anonymous User from , TX

August 26, 2025 at 2:18 PM

830-521-3012 reported as a Robocall. Received on August 26, 2025 at 11:54 AM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from , MD

August 26, 2025 at 10:18 AM

830-521-3049 reported as a Live Voice or Other. Received on August 25, 2025 at 2:28 PM.
Call for No Subject Provided

Anonymous User from , RI

June 11, 2025 at 6:39 PM

830-521-4019 reported as a Live Voice or Other. Received on June 11, 2025 at 3:05 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , TX

June 3, 2025 at 10:59 AM

830-521-5328 reported as a unwanted call. Received on June 3, 2025 at 9:00 AM.
Call for No Subject Provided

Anonymous User from , CA

May 16, 2025 at 7:38 AM

830-521-7179 reported as a Robocall. Received on May 14, 2025 at 12:09 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from San Antonio, Texas

May 1, 2025 at 10:06 PM

830-521-6335 reported as a Live Voice or Other. Received on April 30, 2025 at 11:53 AM.

Anonymous User from San Antonio, Texas

April 30, 2025 at 12:37 PM

830-521-6335 reported as a Robocall. Received on April 30, 2025 at 11:34 AM.

Anonymous User from , TX

April 25, 2025 at 1:50 AM

830-521-5277 reported as a Robocall. Received on April 23, 2025 at 1:57 PM.
Call for Dropped call or no message

Anonymous User from Eagle Pass, Texas

February 6, 2025 at 11:52 AM

830-521-7312 reported as a Robocall. Received on February 6, 2025 at 10:38 AM.
Call for Medical & prescriptions

Anonymous User from Marion, Texas

February 4, 2025 at 2:37 PM

830-521-6121 reported as a unwanted call. Received on February 4, 2025 at 1:19 PM.

Anonymous User from , TX

December 3, 2024 at 3:50 PM

830-521-7892 reported as a Live Voice or Other. Received on December 2, 2024 at 5:54 PM.
Call for No Subject Provided

Anonymous User from , WI

August 15, 2024 at 4:06 PM

830-521-3617 reported as a Live Voice or Other. Received on August 14, 2024 at 12:00 AM.

Anonymous User from Trinity, Texas

November 11, 2023 at 10:17 PM

830-521-4443 reported as a Robocall. Received on October 17, 2023 at 12:00 AM.

Anonymous User from , TX

October 10, 2023 at 12:59 PM

830-521-6814 reported as a Live Voice or Other. Received on October 10, 2023 at 11:57 AM.
Call for Warranties & protection plans

Anonymous User from , TX

September 6, 2023 at 8:04 PM

830-521-3098 reported as a Robocall. Received on September 6, 2023 at 11:35 AM.
Call for Dropped call or no message

Anonymous User from Houston, Texas

June 15, 2023 at 11:54 AM

830-521-7257 reported as a Robocall. Received on June 15, 2023 at 10:12 AM.

Anonymous User from Montgomery, Alabama

May 3, 2023 at 5:36 PM

830-521-3299 reported as a Robocall. Received on May 3, 2023 at 4:34 PM.

Anonymous User from Magalia, California

April 13, 2023 at 6:52 PM

830-521-8303 reported as a Robocall. Received on April 13, 2023 at 7:49 AM.

Anonymous User from Magalia, California

March 28, 2023 at 12:15 PM

830-521-8303 reported as a Robocall. Received on March 28, 2023 at 9:17 AM.

Anonymous User from , TX

January 23, 2023 at 9:02 PM

830-521-5679 reported as a Live Voice or Other. Received on January 23, 2023 at 7:54 PM.
Call for Home improvement & cleaning

Anonymous User from , TX

December 19, 2022 at 3:19 PM

830-521-6237 reported as a Live Voice or Other. Received on December 19, 2022 at 12:00 AM.
Call for No Subject Provided

Anonymous User from , MD

November 12, 2022 at 11:13 AM

830-521-3844 reported as a Live Voice or Other. Received on November 12, 2022 at 12:00 AM.
Call for No Subject Provided

Anonymous User from , TX

October 17, 2022 at 1:36 PM

830-521-7574 reported as a unwanted call. Received on October 5, 2022 at 3:30 PM.
Call for No Subject Provided

Anonymous User from , TX

September 15, 2022 at 1:14 PM

830-521-3767 reported as a Live Voice or Other. Received on September 15, 2022 at 12:13 PM.

Anonymous User from San Antonio, TX

March 2, 2022 at 10:44 AM

None reported as a Prerecorded Voice. Received on March 2, 2022 at 4:33 AM.
Unwanted call for Solar Panels Services
Caller ID indicated they called from 830-521-8552
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Madison, WI

October 14, 2021 at 2:44 AM

830-521-5195 reported as a Text Message. Received on October 14, 2021 at 2:01 PM.
Unwanted call for Other Services
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Oxnard, CA

October 7, 2020 at 10:04 PM

830-521-4699 reported as a Text Message. Received on October 7, 2020 at 12:41 PM.
Unwanted call for unknown
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from San Antonio, TX

October 2, 2020 at 10:45 PM

830-521-4644 reported as a Text Message. Received on October 2, 2020 at 2:07 PM.
Unwanted call for unknown
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

830-521-2XXX: 830-521-2200 | 830-521-2233 | 830-521-2252 | 830-521-2260 | 830-521-2262 | 830-521-2269 |
830-521-3XXX: 830-521-3000 | 830-521-3030 | 830-521-3062 | 830-521-3090 | 830-521-3096 | 830-521-3099 | 830-521-3600 | 830-521-3610 | 830-521-3611 | 830-521-3612 | 830-521-3650 | 830-521-3658 | 830-521-3700 | 830-521-3760 | 830-521-3762 | 830-521-3765 | 830-521-3776 | 830-521-3800 | 830-521-3840 | 830-521-3845 | 830-521-3847 |
830-521-4XXX: 830-521-4400 | 830-521-4404 | 830-521-4409 | 830-521-4444 | 830-521-4445 | 830-521-4447 | 830-521-4600 | 830-521-4640 | 830-521-4645 | 830-521-4647 |
830-521-5XXX: 830-521-5200 | 830-521-5220 | 830-521-5270 | 830-521-5277 | 830-521-5278 |
830-521-6XXX: 830-521-6200 | 830-521-6230 | 830-521-6234 | 830-521-6237 |
830-521-7XXX: 830-521-7500 | 830-521-7507 | 830-521-7570 | 830-521-7575 | 830-521-7577 | 830-521-7800 | 830-521-7887 | 830-521-7890 | 830-521-7898 | 830-521-7899 |
830-521-9XXX: 830-521-9000 | 830-521-9020 | 830-521-9050 | 830-521-9052 | 830-521-9054 | 830-521-9090 |