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312-409

You are reviewing the Area Code (NPA/NXX) report for 312-409. Did you mean to search the SMS short code 312409?

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🇺🇸 DSN NORTHCOM Area Code Detected

The area code you entered, 312, overlaps with the DSN network for the Continental United States and Puerto Rico under Northern Command (NORTHCOM), though it could also be part of standard civilian phone numbers.

Raw Number312409
Basic Format312-409
NPA (Area Code)312
NXX409

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
312-409-0XXX6529T-MOBILE USA, INC.CHICGOZN01AS01/06/2016CHICAGO ZONE 01ILMW02/05/2016
312-409-1XXX6529T-MOBILE USA, INC.CHICGOZN01AS01/06/2016CHICAGO ZONE 01ILMW02/05/2016
312-409-2XXX6333CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILCHICGOZN01AS08/26/2025CHICAGO ZONE 01ILMW09/25/2025
312-409-3XXX6529T-MOBILE USA, INC.CHICGOZN01AS01/06/2016CHICAGO ZONE 01ILMW02/05/2016
312-409-4XXX5562METROPCS, INC.CHICGOZN01AS01/11/2016CHICAGO ZONE 01ILMW02/04/2016
312-409-5XXX6529T-MOBILE USA, INC.CHICGOZN01AS01/06/2016CHICAGO ZONE 01ILMW02/05/2016
312-409-6XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-409-7XXX5562METROPCS, INC.CHICGOZN01AS01/11/2016CHICAGO ZONE 01ILMW02/04/2016
312-409-8XXX5562METROPCS, INC.CHICGOZN01AS12/23/2015CHICAGO ZONE 01ILMW01/16/2016
312-409-9XXX5562METROPCS, INC.CHICGOZN01AS12/23/2015CHICAGO ZONE 01ILMW01/16/2016
312-409-XXXX9329ILLINOIS BELL TEL COCHICGOZN01ASCHICAGO ZONE 01IL

Business/Government Phones on the 312-409 Prefix

PhoneNameAddress
312-409-939324-7 Locksmith Services

Reports

Anonymous User from Chicago, Illinois

March 12, 2026 at 4:03 PM

312-409-6326 reported as a Live Voice or Other. Received on March 11, 2026 at 12:00 PM.
Call for Dropped call or no message

Anonymous User from Westwego, Louisiana

November 26, 2025 at 5:04 PM

312-409-0069 reported as a Live Voice or Other. Received on August 8, 2025 at 12:00 PM.

Anonymous User from Chicago, Illinois

July 31, 2025 at 6:15 PM

312-409-0432 reported as a Robocall. Received on July 31, 2025 at 4:55 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Chicago, Illinois

March 14, 2024 at 3:04 PM

312-409-4106 reported as a Robocall. Received on March 14, 2024 at 10:15 PM.

Anonymous User from Chicago, Illinois

February 8, 2024 at 1:37 PM

312-409-0708 reported as a unwanted call. Received on February 8, 2024 at 10:58 AM.
Call for Dropped call or no message

Anonymous User from , IL

June 3, 2023 at 12:53 PM

312-409-3000 reported as a Robocall. Received on June 3, 2023 at 11:44 AM.

Anonymous User from Chicago, Illinois

March 17, 2023 at 10:58 AM

312-409-4367 reported as a Robocall. Received on March 17, 2023 at 9:52 AM.

Anonymous User from Homeland, CA

March 9, 2023 at 9:18 PM

None reported as a Prerecorded Voice. Received on March 9, 2023 at 11:17 AM.
Unwanted call for unknown
Caller ID indicated they called from 312-409-1207
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

312-409-0XXX: 312-409-0700 | 312-409-0702 | 312-409-0706 | 312-409-0707 |
312-409-1XXX: 312-409-1200 | 312-409-1203 | 312-409-1208 | 312-409-1212 | 312-409-1234 | 312-409-1247 |
312-409-3XXX: 312-409-3000 | 312-409-3003 | 312-409-3062 |
312-409-4XXX: 312-409-4100 | 312-409-4101 | 312-409-4103 | 312-409-4107 | 312-409-4133 | 312-409-4360 | 312-409-4365 | 312-409-4810 | 312-409-4814 | 312-409-4815 | 312-409-4887 | 312-409-4888 | 312-409-4889 |
312-409-5XXX: 312-409-5443 | 312-409-5444 | 312-409-5483 | 312-409-5493 | 312-409-5494 | 312-409-5497 |
312-409-7XXX: 312-409-7430 | 312-409-7434 | 312-409-7437 | 312-409-7443 | 312-409-7449 | 312-409-7452 |
312-409-8XXX: 312-409-8000 | 312-409-8005 | 312-409-8006 | 312-409-8030 | 312-409-8035 | 312-409-8038 | 312-409-8186 | 312-409-8187 | 312-409-8190 | 312-409-8197 | 312-409-8199 | 312-409-8303 | 312-409-8330 | 312-409-8333 | 312-409-8383 | 312-409-8387 | 312-409-8620 | 312-409-8622 | 312-409-8628 | 312-409-8692 | 312-409-8693 | 312-409-8697 |
312-409-9XXX: 312-409-9301 | 312-409-9390 | 312-409-9393 | 312-409-9394 | 312-409-9395 |