You are reviewing the Area Code (NPA/NXX) report for 312-521. Did you mean to search the SMS short code 312521?
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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 | 312521 |
| Basic Format | 312-521 |
| NPA (Area Code) | 312 |
| NXX | 521 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 312-521-0XXX | 984E | BANDWIDTH.COM CLEC, LLC - IL | CHICGOZN01 | AS | 02/02/2010 | CHICAGO ZONE 01 | IL | MW | 03/04/2010 |
| 312-521-1XXX | 063E | PEERLESS NETWORK OF ILLINOIS, LLC - IL | CHICGOZN01 | AS | 10/21/2002 | CHICAGO ZONE 01 | IL | MW | 11/16/2002 |
| 312-521-2XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | AS | 10/25/2002 | CHICAGO ZONE 01 | IL | MW | 11/20/2002 |
| 312-521-3XXX | 6529 | T-MOBILE USA, INC. | CHICGOZN01 | AS | 02/09/2004 | CHICAGO ZONE 01 | IL | MW | 03/01/2004 |
| 312-521-4XXX | 829J | PAETEC ITEL, LLC | CHICGOZN01 | AS | 03/27/2009 | CHICAGO ZONE 01 | IL | MW | 04/08/2009 |
| 312-521-5XXX | 5447 | ACCESS ONE, INC. - IL | CHICGOZN01 | AS | 01/22/2009 | CHICAGO ZONE 01 | IL | MW | 02/25/2009 |
| 312-521-6XXX | 7136 | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-521-7XXX | 460K | FIRST COMMUNICATIONS, LLC | CHICGOZN01 | AS | 10/10/2003 | CHICAGO ZONE 01 | IL | MW | 10/22/2003 |
| 312-521-8XXX | 829J | PAETEC ITEL, LLC | CHICGOZN01 | AS | 07/24/2013 | CHICAGO ZONE 01 | IL | MW | 08/23/2013 |
| 312-521-9XXX | 6333 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | CHICGOZN01 | AS | 01/10/2011 | CHICAGO ZONE 01 | IL | MW | 02/07/2011 |
| 312-521-XXXX | 7136 | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
| Phone | Name | Address |
|---|---|---|
| 312-521-6767 | Rewards Network | |
| 312-521-0909 | Perspire Sauna Studio | 1208 West Madison Street Chicago 60607 US |
| 312-521-5100 | Mastro's Steakhouse | 520 North Dearborn Street Chicago 60654 US |
| 312-521-8000 | The Allis | 113-125 North Green Street Chicago 60661 US |
| 312-521-8000 | Fox Bar | 113-125 North Green Street Chicago 60661 US |
| 312-521-8700 | Lavazza | 43 East Ohio Street Chicago 60611 US |
| 312-521-8700 | Eataly | 43 East Ohio Street Chicago 60611 US |
| 312-521-9788 | Starbucks | 200 North Michigan Avenue Chicago 60601 US |
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