312-870

You are reviewing the Area Code (NPA/NXX) report for 312-870. Did you mean to search the SMS short code 312870?

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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 Number	312870
Basic Format	312-870
NPA (Area Code)	312
NXX	870

Call Routing Data

NPA-NXX-X	OCN	Company	Rate Center	Use Type	Assign Date	City	State	Region	Block Effective Date
312-870-0XXX	984E	BANDWIDTH.COM CLEC, LLC - IL	CHICGOZN01	AS	02/02/2010	CHICAGO ZONE 01	IL	MW	03/04/2010
312-870-1XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-2XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-3XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-4XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-5XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-6XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-7XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-8XXX	9329	ILLINOIS BELL TEL CO	CHICGOZN01	AS	09/29/2000	CHICAGO ZONE 01	IL	MW	11/03/2000
312-870-9XXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	RT		CHICAGO ZONE 01	IL	MW
312-870-XXXX	460K	FIRST COMMUNICATIONS, LLC	CHICGOZN01	AS		CHICAGO ZONE 01	IL

Business/Government Phones on the 312-870 Prefix

Phone	Name	Address
312-870-5656	Winsby, Inc.
312-870-0330	Journey Psychology Center	4160 North Lincoln Avenue Chicago 60618 US

Reports

Anonymous User from , IL

April 17, 2026 at 3:52 PM

312-870-9385 reported as a Robocall. Received on April 17, 2026 at 2:51 PM.
Call for No Subject Provided

Anonymous User from Fort Myers, Illinois

April 17, 2026 at 12:16 PM

312-870-5607 reported as a Robocall. Received on April 17, 2026 at 10:47 AM.

Anonymous User from , IL

April 3, 2026 at 4:44 PM

312-870-5558 reported as a Robocall. Received on March 3, 2026 at 6:49 PM.

Anonymous User from Niles, Illinois

March 15, 2026 at 11:24 PM

312-870-5558 reported as a Live Voice or Other. Received on March 3, 2026 at 12:05 PM.

Anonymous User from Niles, Illinois

March 15, 2026 at 11:20 PM

312-870-5558 reported as a Live Voice or Other. Received on March 3, 2026 at 12:05 PM.

Anonymous User from Glenview, Illinois

March 13, 2026 at 10:47 PM

312-870-5558 reported as a unwanted call. Received on March 3, 2026 at 8:10 PM.

Anonymous User from Glenview, Illinois

March 13, 2026 at 6:21 PM

312-870-5558 reported as a unwanted call. Received on March 3, 2026 at 8:10 PM.

Anonymous User from Coconut Creek, Florida

March 3, 2026 at 12:54 PM

312-870-5558 reported as a Robocall. Received on March 3, 2026 at 1:00 PM.

Anonymous User from Libertyville, Illinois

August 13, 2025 at 6:07 PM

312-870-7042 reported as a Live Voice or Other. Received on August 13, 2025 at 8:06 AM.

Anonymous User from Libertyville, Illinois

July 22, 2025 at 4:52 PM

312-870-0281 reported as a Live Voice or Other. Received on July 22, 2025 at 11:10 AM.

Anonymous User from Everett, Washington

July 17, 2025 at 6:00 PM

312-870-0113 reported as a Live Voice or Other. Received on July 16, 2025 at 12:00 PM.

Anonymous User from Oak Lawn, IL

June 2, 2025 at 5:15 PM

312-870-7685 reported as a Live Voice. Received on June 2, 2025 at 12:09 PM.
Unwanted call for unknown
Contacted via Internet (VOIP)

Anonymous User from Oak Lawn, IL

May 30, 2025 at 3:40 PM

312-870-0281 reported as a Prerecorded Voice. Received on May 30, 2025 at 10:35 AM.
Unwanted call for Medicare Medicaid Services
Contacted via Internet (VOIP)

Anonymous User from , WA

May 28, 2025 at 9:06 PM

312-870-4683 reported as a unwanted call. Received on May 28, 2025 at 5:49 PM.
Call for No Subject Provided

Anonymous User from Chicago, Illinois

May 27, 2025 at 1:15 PM

312-870-6773 reported as a Robocall. Received on May 27, 2025 at 12:00 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Chicago, Illinois

May 25, 2025 at 6:21 PM

312-870-1032 reported as a Robocall. Received on May 25, 2025 at 4:29 PM.
Call for Dropped call or no message

Anonymous User from Illinois, Illinois

January 20, 2025 at 2:33 PM

312-870-4398 reported as a Robocall. Received on January 20, 2025 at 1:30 PM.
Call for Medical & prescriptions

Anonymous User from Illinois, Illinois

January 10, 2025 at 12:48 PM

312-870-6937 reported as a Robocall. Received on January 10, 2025 at 11:46 AM.
Call for Medical & prescriptions

Anonymous User from , IL

November 20, 2024 at 6:01 PM

312-870-4932 reported as a Robocall. Received on November 20, 2024 at 5:00 PM.

Anonymous User from Minneapolis, Minnesota

November 19, 2024 at 12:22 PM

312-870-7591 reported as a Robocall. Received on November 19, 2024 at 10:03 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Euclid, Ohio

November 1, 2024 at 6:53 PM

312-870-2196 reported as a Robocall. Received on November 1, 2024 at 6:45 PM.
Call for Dropped call or no message

Anonymous User from Libertyville, Illinois

October 4, 2024 at 7:56 PM

312-870-4249 reported as a Live Voice or Other. Received on October 3, 2024 at 7:27 PM.

Anonymous User from Arlington Hts, Illinois

May 17, 2024 at 1:17 PM

312-870-6804 reported as a Live Voice or Other. Received on May 17, 2024 at 10:32 AM.
Call for Medical & prescriptions

Anonymous User from , IL

May 1, 2024 at 10:22 AM

312-870-4102 reported as a Robocall. Received on May 1, 2024 at 9:18 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Henrico, Virginia

April 9, 2024 at 3:38 PM

312-870-7585 reported as a unwanted call. Received on April 8, 2024 at 3:24 PM.

Anonymous User from Harvard, Illinois

March 22, 2024 at 10:27 PM

312-870-1493 reported as a Robocall. Received on March 22, 2024 at 10:48 AM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Chicago, Illinois

March 19, 2024 at 12:20 PM

312-870-8178 reported as a Robocall. Received on March 19, 2024 at 9:30 AM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

March 12, 2024 at 4:23 PM

312-870-5082 reported as a Robocall. Received on March 12, 2024 at 12:54 PM.
Call for Medical & prescriptions

Anonymous User from Rockfordf, Illinois

December 5, 2023 at 8:00 PM

312-870-3468 reported as a unwanted call. Received on December 2, 2023 at 1:03 PM.
Call for Dropped call or no message

Anonymous User from Clinton, IL

November 14, 2023 at 4:12 PM

None reported as a Prerecorded Voice. Received on November 14, 2023 at 10:10 AM.
Unwanted call for Unknown Services
Caller ID indicated they called from 312-870-9735
Contacted via Wired

Anonymous User from , IL

November 10, 2023 at 8:12 PM

312-870-4855 reported as a Live Voice or Other. Received on November 11, 2023 at 3:35 PM.
Call for Dropped call or no message

Anonymous User from Chicago, Illinois

November 9, 2023 at 3:42 PM

312-870-9245 reported as a Live Voice or Other. Received on November 9, 2023 at 2:00 PM.
Call for Medical & prescriptions

Anonymous User from , IL

November 6, 2023 at 11:39 AM

312-870-8953 reported as a Robocall. Received on November 6, 2023 at 10:35 AM.
Call for Medical & prescriptions

Anonymous User from Chicago, Illinois

August 6, 2023 at 8:02 PM

312-870-2294 reported as a Robocall. Received on July 28, 2023 at 10:42 AM.

Anonymous User from , ME

May 24, 2023 at 9:59 PM

312-870-7587 reported as a Live Voice or Other. Received on May 24, 2023 at 12:32 PM.
Call for Dropped call or no message

Anonymous User from South Deerfield, Massachusetts

May 22, 2023 at 4:13 PM

312-870-7587 reported as a Live Voice or Other. Received on May 22, 2023 at 3:20 PM.
Call for Computer & technical support

Anonymous User from , WA

May 2, 2023 at 12:20 PM

312-870-7597 reported as a Live Voice or Other. Received on May 2, 2023 at 9:13 AM.

Anonymous User from , OK

April 25, 2023 at 11:39 AM

312-870-7586 reported as a Live Voice or Other. Received on April 25, 2023 at 10:37 AM.
Call for Dropped call or no message

Anonymous User from , NY

April 20, 2023 at 1:29 PM

312-870-7594 reported as a Live Voice or Other. Received on April 20, 2023 at 12:50 PM.

Anonymous User from , CA

March 28, 2023 at 6:28 PM

312-870-7586 reported as a unwanted call. Received on March 27, 2023 at 2:12 PM.

Anonymous User from , IL

March 8, 2023 at 5:28 PM

312-870-1340 reported as a Live Voice or Other. Received on March 8, 2023 at 3:48 PM.
Call for Medical & prescriptions

Anonymous User from , IL

March 8, 2023 at 4:51 PM

312-870-1340 reported as a Robocall. Received on March 8, 2023 at 3:48 PM.
Call for Medical & prescriptions

Anonymous User from , IL

June 24, 2022 at 6:50 PM

312-870-5592 reported as a Live Voice or Other. Received on June 24, 2022 at 4:42 PM.

Most 'popular' numbers on this prefix:

312-870-0XXX: 312-870-0011 | 312-870-0020 | 312-870-0024 | 312-870-0090 | 312-870-0093 | 312-870-0099 | 312-870-0114 | 312-870-0115 | 312-870-0118 | 312-870-0172 | 312-870-0178 | 312-870-0198 | 312-870-0238 | 312-870-0247 | 312-870-0248 | 312-870-0282 | 312-870-0283 | 312-870-0287 |
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312-870-3XXX: 312-870-3400 | 312-870-3460 | 312-870-3462 | 312-870-3465 |
312-870-4XXX: 312-870-4100 | 312-870-4101 | 312-870-4103 | 312-870-4133 | 312-870-4143 | 312-870-4144 | 312-870-4200 | 312-870-4240 | 312-870-4241 | 312-870-4242 | 312-870-4245 | 312-870-4300 | 312-870-4333 | 312-870-4390 | 312-870-4393 | 312-870-4399 | 312-870-4800 | 312-870-4850 | 312-870-4855 | 312-870-4858 | 312-870-4888 | 312-870-4900 | 312-870-4930 | 312-870-4932 | 312-870-4935 | 312-870-4997 | 312-870-4998 |
312-870-5XXX: 312-870-5000 | 312-870-5003 | 312-870-5007 | 312-870-5080 | 312-870-5083 | 312-870-5085 | 312-870-5217 | 312-870-5260 | 312-870-5263 | 312-870-5265 | 312-870-5266 | 312-870-5280 | 312-870-5281 | 312-870-5283 | 312-870-5500 | 312-870-5503 | 312-870-5505 | 312-870-5592 | 312-870-5594 | 312-870-5599 | 312-870-5600 | 312-870-5606 | 312-870-5650 | 312-870-5655 | 312-870-5656 | 312-870-5660 |
312-870-6XXX: 312-870-6800 | 312-870-6801 | 312-870-6808 | 312-870-6900 | 312-870-6992 | 312-870-6996 |
312-870-7XXX: 312-870-7500 | 312-870-7530 | 312-870-7577 | 312-870-7590 | 312-870-7592 | 312-870-7598 | 312-870-7600 | 312-870-7610 | 312-870-7680 | 312-870-7685 | 312-870-7688 |
312-870-8XXX: 312-870-8170 | 312-870-8172 | 312-870-8175 | 312-870-8181 | 312-870-8187 | 312-870-8197 | 312-870-8901 | 312-870-8950 | 312-870-8955 | 312-870-8959 | 312-870-8997 | 312-870-8998 |
312-870-9XXX: 312-870-9110 | 312-870-9111 | 312-870-9115 | 312-870-9192 | 312-870-9197 | 312-870-9200 | 312-870-9240 | 312-870-9245 | 312-870-9701 | 312-870-9706 | 312-870-9707 | 312-870-9730 | 312-870-9736 | 312-870-9737 |