831-921

You are reviewing the Area Code (NPA/NXX) report for 831-921. Did you mean to search the SMS short code 831921?

North American Phone Intelligence

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Raw Number831921
Basic Format831-921
NPA (Area Code)831
NXX921

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective DateBlock Available Date
831-921-0XXX145JTERRA NOVA TELECOM INC.TRES PINOSAS12/03/2024TRES PINOSCAWC12/31/2024
831-921-1XXX373FPEERLESS NETWORK OF CALIFORNIA, LLC - CATRES PINOSAS02/10/2016TRES PINOSCAWC03/05/2016
831-921-2XXX649CONVOY, LLC - CATRES PINOSAS07/01/2019TRES PINOSCAWC07/28/2019
831-921-3XXX649CONVOY, LLC - CATRES PINOSAS07/01/2019TRES PINOSCAWC07/28/2019
831-921-4XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-5XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-6XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-7XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-8XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-9XXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSAVTRES PINOSCAWC07/03/2017
831-921-XXXX8826LEVEL 3 COMMUNICATIONS, LLC - CATRES PINOSASTRES PINOSCA

Reports

Anonymous User from , CA

July 1, 2026 at 2:36 PM

831-921-3560 reported as a Robocall. Received on July 1, 2026 at 11:32 AM.
Call for Energy, solar, & utilities

Anonymous User from Tewksbury, Massachusetts

June 15, 2026 at 5:30 PM

831-921-1670 reported as a Robocall. Received on June 15, 2026 at 5:27 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Spring Valley, California

June 8, 2026 at 9:18 PM

831-921-1525 reported as a Live Voice or Other. Received on June 8, 2026 at 3:07 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CA

June 8, 2026 at 3:03 PM

831-921-1600 reported as a Live Voice or Other. Received on June 8, 2026 at 12:02 PM.
Call for Dropped call or no message

Anonymous User from El Cajon, California

June 8, 2026 at 2:00 PM

831-921-1353 reported as a Robocall. Received on June 2, 2026 at 5:46 PM.

Anonymous User from , CA

June 7, 2026 at 1:17 PM

831-921-1413 reported as a Robocall. Received on June 7, 2026 at 9:54 AM.

Anonymous User from Spring Valley, California

June 5, 2026 at 10:21 PM

831-921-1275 reported as a Live Voice or Other. Received on June 5, 2026 at 5:41 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Lititz, Pennsylvania

May 26, 2026 at 10:38 AM

831-921-1768 reported as a Robocall. Received on May 26, 2026 at 12:00 PM.

Anonymous User from , CA

April 12, 2026 at 1:09 PM

831-921-1827 reported as a unwanted call. Received on April 11, 2026 at 12:00 AM.
Call for No Subject Provided

Anonymous User from , CA

June 19, 2024 at 3:26 PM

831-921-1141 reported as a Robocall. Received on June 19, 2024 at 12:23 PM.
Call for Dropped call or no message

Anonymous User from , CA

May 1, 2024 at 11:42 PM

831-921-6034 reported as a Robocall. Received on April 24, 2024 at 2:25 PM.

Anonymous User from , CA

February 27, 2024 at 3:28 PM

831-921-4704 reported as a unwanted call. Received on February 8, 2024 at 8:48 AM.

Anonymous User from Marina, CA

April 5, 2022 at 6:53 PM

None reported as a Live Voice. Received on April 5, 2022 at 4:17 PM.
Unwanted call for unknown
Caller ID indicated they called from 831-921-2134
Contacted via Internet (VOIP)

Most 'popular' numbers on this prefix:

831-921-1XXX: 831-921-1100 | 831-921-1111 | 831-921-1122 | 831-921-1140 | 831-921-1144 | 831-921-1147 |
831-921-2XXX: 831-921-2130 | 831-921-2135 | 831-921-2139 | 831-921-2195 | 831-921-2197 | 831-921-2198 | 831-921-2500 | 831-921-2501 | 831-921-2525 | 831-921-2530 | 831-921-2533 | 831-921-2535 |
831-921-6XXX: 831-921-6000 | 831-921-6020 | 831-921-6022 | 831-921-6030 | 831-921-6031 | 831-921-6033 |