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312-777

You are reviewing the Area Code (NPA/NXX) report for 312-777. Did you mean to search the SMS short code 312777?

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Examples: 206-739-5800, 206, 206-739, 48369

🇺🇸 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 Number312777
Basic Format312-777
NPA (Area Code)312
NXX777

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
312-777-0XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-1XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-2XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-3XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-4XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-5XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-6XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-7XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-8XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01RTCHICAGO ZONE 01ILMW
312-777-9XXX224CONVOY, LLCCHICGOZN01AS10/15/2010CHICAGO ZONE 01ILMW10/27/2010
312-777-XXXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01ASCHICAGO ZONE 01IL

Business/Government Phones on the 312-777 Prefix

PhoneNameAddress
312-777-1785Chase902 North State Street Chicago 60610 US

Reports

Anonymous User from Mansura, Louisiana

April 10, 2026 at 7:53 AM

312-777-1672 reported as a Robocall. Received on April 9, 2026 at 2:13 PM.

Anonymous User from , TN

April 9, 2026 at 1:20 AM

312-777-9846 reported as a Robocall. Received on April 9, 2026 at 12:04 AM.

Anonymous User from Fort Myers, Illinois

April 8, 2026 at 4:35 PM

312-777-0438 reported as a Live Voice or Other. Received on April 8, 2026 at 4:21 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Fort Myers, Florida

April 8, 2026 at 4:31 PM

312-777-0439 reported as a Live Voice or Other. Received on April 8, 2026 at 1:39 PM.

Anonymous User from Libertyville, Illinois

December 3, 2025 at 9:49 AM

312-777-9485 reported as a Live Voice or Other. Received on December 1, 2025 at 1:56 PM.

Anonymous User from , MO

July 29, 2025 at 5:30 PM

312-777-8000 reported as a Live Voice or Other. Received on July 29, 2025 at 4:00 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Bear, Delaware

May 9, 2025 at 9:41 AM

312-777-9485 reported as a Robocall. Received on May 9, 2025 at 9:39 AM.
Call for Dropped call or no message

Anonymous User from Waukegan, Illinois

March 12, 2025 at 10:35 AM

312-777-9693 reported as a Robocall. Received on March 3, 2025 at 12:59 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Libertyville, Illinois

March 5, 2025 at 3:47 PM

312-777-3655 reported as a Live Voice or Other. Received on March 2, 2025 at 2:46 PM.
Call for Medical & prescriptions

Anonymous User from Wheeling, Illinois

April 2, 2024 at 2:22 PM

312-777-9629 reported as a Robocall. Received on March 29, 2024 at 4:48 PM.
Call for Dropped call or no message

Anonymous User from Wheeling, Illinois

March 8, 2024 at 8:47 AM

312-777-2177 reported as a Robocall. Received on March 7, 2024 at 12:05 PM.
Call for Dropped call or no message

Anonymous User from Wheeling, Illinois

March 7, 2024 at 12:53 PM

312-777-2890 reported as a Robocall. Received on March 7, 2024 at 11:05 AM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

February 16, 2024 at 1:07 PM

312-777-8367 reported as a Live Voice or Other. Received on February 16, 2024 at 8:59 AM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

May 13, 2023 at 9:07 AM

312-777-1785 reported as a Live Voice or Other. Received on March 31, 2023 at 7:02 PM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

April 8, 2023 at 9:12 AM

312-777-0133 reported as a Live Voice or Other. Received on April 7, 2023 at 3:34 PM.
Call for Dropped call or no message

Anonymous User from Round Lake, Illinois

February 20, 2023 at 4:18 PM

312-777-1005 reported as a Robocall. Received on February 20, 2023 at 3:12 PM.

Anonymous User from , AL

February 2, 2016 at 12:55 AM

312-777-3456 reported as a Live Voice. Received on January 1, 2016 at 8:00 AM.
Telemarketing (including do not call and spoofing) for unknown
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

312-777-0XXX: 312-777-0134 | 312-777-0135 | 312-777-0137 | 312-777-0158 | 312-777-0176 | 312-777-0178 |
312-777-1XXX: 312-777-1000 | 312-777-1001 | 312-777-1002 | 312-777-1700 | 312-777-1747 | 312-777-1777 | 312-777-1780 | 312-777-1783 | 312-777-1788 |
312-777-2XXX: 312-777-2169 | 312-777-2170 | 312-777-2175 | 312-777-2179 | 312-777-2187 | 312-777-2188 | 312-777-2800 | 312-777-2887 | 312-777-2888 | 312-777-2890 | 312-777-2891 | 312-777-2899 |
312-777-3XXX: 312-777-3400 | 312-777-3443 | 312-777-3452 | 312-777-3455 | 312-777-3456 | 312-777-3600 | 312-777-3636 | 312-777-3651 | 312-777-3655 | 312-777-3656 |
312-777-4XXX: 312-777-4111 | 312-777-4114 | 312-777-4115 | 312-777-4141 | 312-777-4142 | 312-777-4197 | 312-777-4200 | 312-777-4202 | 312-777-4203 | 312-777-4241 | 312-777-4242 | 312-777-4247 |
312-777-8XXX: 312-777-8360 | 312-777-8363 | 312-777-8365 | 312-777-8383 | 312-777-8387 |
312-777-9XXX: 312-777-9692 | 312-777-9695 | 312-777-9699 | 312-777-9706 | 312-777-9707 | 312-777-9744 | 312-777-9745 | 312-777-9747 |