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312-743

You are reviewing the Area Code (NPA/NXX) report for 312-743. Did you mean to search the SMS short code 312743?

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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 Number312743
Basic Format312-743
NPA (Area Code)312
NXX743

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegion
312-743-0XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-1XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-2XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-3XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-4XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-5XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-6XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-7XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-8XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-9XXX9329ILLINOIS BELL TEL COCHICGOZN01RTCHICAGO ZONE 01ILMW
312-743-XXXX9329ILLINOIS BELL TEL COCHICGOZN01AS11/15/2001CHICAGO ZONE 01IL

Business/Government Phones on the 312-743 Prefix

PhoneNameAddress
312-743-0260West Chicago Avenue Branch Library4856 West Chicago Avenue Chicago 60651 US
312-743-0450West Town Branch Library1625 West Chicago Avenue Chicago 60622 US
312-743-0480Dunning Branch Library7455 West Cornelia Avenue Chicago 60634 US
312-743-1440Chicago Police Department 15th District Station5757 West Madison Street Chicago 60644 US

Reports

Anonymous User from Algonquin, Illinois

April 8, 2026 at 11:05 PM

312-743-1245 reported as a Robocall. Received on April 8, 2026 at 11:50 AM.
Call for Dropped call or no message

Anonymous User from Hillsboro, Missouri

December 2, 2025 at 9:43 AM

312-743-3915 reported as a Robocall. Received on December 1, 2025 at 8:55 AM.
Call for Medical & prescriptions

Anonymous User from Chicago, Illinois

September 29, 2025 at 5:31 PM

312-743-9541 reported as a Robocall. Received on September 29, 2025 at 2:28 PM.
Call for Dropped call or no message

Anonymous User from Palatine, Illinois

May 22, 2025 at 4:11 PM

312-743-7954 reported as a Robocall. Received on May 22, 2025 at 3:08 PM.

Anonymous User from Chicago, Illinois

May 7, 2025 at 6:13 PM

312-743-0804 reported as a Robocall. Received on May 7, 2025 at 1:09 PM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

October 7, 2024 at 4:29 PM

312-743-6657 reported as a Live Voice or Other. Received on October 7, 2024 at 3:27 PM.
Call for Medical & prescriptions

Anonymous User from Wheeling, Illinois

April 2, 2024 at 2:16 PM

312-743-8530 reported as a Robocall. Received on April 1, 2024 at 2:57 PM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

March 12, 2024 at 1:06 PM

312-743-6605 reported as a Robocall. Received on March 12, 2024 at 10:28 AM.
Call for Dropped call or no message

Anonymous User from Wheeling, Illinois

March 8, 2024 at 10:55 AM

312-743-0211 reported as a Robocall. Received on March 8, 2024 at 9:53 AM.
Call for Dropped call or no message

Anonymous User from , IL

October 30, 2023 at 2:57 PM

312-743-1772 reported as a Live Voice or Other. Received on October 30, 2023 at 1:54 PM.

Anonymous User from , IL

June 13, 2023 at 4:38 PM

312-743-6127 reported as a Live Voice or Other. Received on June 13, 2023 at 3:36 PM.
Call for No Subject Provided

Anonymous User from , IL

June 13, 2023 at 8:33 AM

312-743-5875 reported as a Live Voice or Other. Received on June 12, 2023 at 5:27 PM.
Call for No Subject Provided

Anonymous User from , IL

June 8, 2023 at 4:48 PM

312-743-7284 reported as a Live Voice or Other. Received on June 8, 2023 at 3:47 PM.
Call for No Subject Provided

Anonymous User from , IL

June 8, 2023 at 2:53 PM

312-743-5960 reported as a Live Voice or Other. Received on June 8, 2023 at 1:50 PM.
Call for No Subject Provided

Anonymous User from , IL

June 7, 2023 at 2:03 PM

312-743-6246 reported as a Live Voice or Other. Received on June 7, 2023 at 12:04 PM.
Call for No Subject Provided

Anonymous User from , IL

June 7, 2023 at 8:27 AM

312-743-7272 reported as a Live Voice or Other. Received on June 6, 2023 at 5:50 PM.
Call for No Subject Provided

Anonymous User from , IL

June 7, 2023 at 8:26 AM

312-743-7118 reported as a Live Voice or Other. Received on June 6, 2023 at 4:59 PM.
Call for No Subject Provided

Anonymous User from , IL

June 7, 2023 at 8:25 AM

312-743-7050 reported as a Live Voice or Other. Received on June 6, 2023 at 4:20 PM.
Call for No Subject Provided

Anonymous User from , IL

June 6, 2023 at 4:24 PM

312-743-5779 reported as a Live Voice or Other. Received on June 6, 2023 at 3:22 PM.
Call for No Subject Provided

Anonymous User from , IL

June 6, 2023 at 8:50 AM

312-743-5779 reported as a Live Voice or Other. Received on June 5, 2023 at 3:57 PM.
Call for No Subject Provided

Anonymous User from , NV

June 5, 2023 at 4:13 PM

312-743-3627 reported as a Robocall. Received on June 5, 2023 at 2:11 PM.

Anonymous User from , IL

October 31, 2022 at 6:50 PM

312-743-1790 reported as a Robocall. Received on October 29, 2022 at 10:13 AM.

Anonymous User from Waco, Texas

June 13, 2022 at 3:36 PM

312-743-1472 reported as a Robocall. Received on June 7, 2022 at 1:48 PM.
Call for Dropped call or no message

Anonymous User from Orland Hills, IL

January 22, 2021 at 1:10 AM

312-743-3502 reported as a Prerecorded Voice. Received on January 21, 2021 at 4:46 PM.
Unwanted call for unknown
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CA

January 25, 2017 at 5:25 PM

None reported as a Live Voice. Received on January 25, 2017 at 12:00 AM.
Unwanted call for unknown
Caller ID indicated they called from 312-743-4140
Contacted via Wired

Most 'popular' numbers on this prefix:

312-743-0XXX: 312-743-0100 | 312-743-0150 | 312-743-0155 | 312-743-0197 | 312-743-0214 | 312-743-0218 | 312-743-0219 | 312-743-0270 | 312-743-0280 | 312-743-0290 | 312-743-0400 | 312-743-0401 | 312-743-0480 | 312-743-0481 | 312-743-0500 | 312-743-0550 | 312-743-0555 |
312-743-1XXX: 312-743-1212 | 312-743-1222 | 312-743-1234 | 312-743-1240 | 312-743-1245 | 312-743-1247 | 312-743-1300 | 312-743-1301 | 312-743-1305 | 312-743-1340 | 312-743-1341 | 312-743-1345 | 312-743-1401 | 312-743-1403 | 312-743-1405 | 312-743-1472 | 312-743-1475 | 312-743-1477 | 312-743-1700 | 312-743-1701 | 312-743-1750 | 312-743-1790 | 312-743-1791 | 312-743-1799 |
312-743-3XXX: 312-743-3433 | 312-743-3434 | 312-743-3435 | 312-743-3500 | 312-743-3503 | 312-743-3505 | 312-743-3530 | 312-743-3600 | 312-743-3620 | 312-743-3621 | 312-743-3623 | 312-743-3650 |
312-743-4XXX: 312-743-4100 | 312-743-4111 | 312-743-4120 | 312-743-4140 | 312-743-4145 |
312-743-5XXX: 312-743-5700 | 312-743-5770 | 312-743-5777 | 312-743-5803 | 312-743-5804 | 312-743-5870 | 312-743-5876 | 312-743-5877 | 312-743-5880 | 312-743-5900 | 312-743-5901 | 312-743-5960 | 312-743-5969 | 312-743-5997 |
312-743-6XXX: 312-743-6100 | 312-743-6102 | 312-743-6120 | 312-743-6122 | 312-743-6125 | 312-743-6200 | 312-743-6202 | 312-743-6220 | 312-743-6240 | 312-743-6241 | 312-743-6247 | 312-743-6600 | 312-743-6650 | 312-743-6655 | 312-743-6666 |
312-743-7XXX: 312-743-7000 | 312-743-7040 | 312-743-7050 | 312-743-7053 | 312-743-7055 | 312-743-7070 | 312-743-7100 | 312-743-7105 | 312-743-7107 | 312-743-7110 | 312-743-7111 | 312-743-7117 | 312-743-7200 | 312-743-7220 | 312-743-7250 | 312-743-7270 | 312-743-7271 | 312-743-7272 |
312-743-8XXX: 312-743-8500 | 312-743-8501 | 312-743-8507 | 312-743-8530 | 312-743-8533 | 312-743-8535 |