You are reviewing the Area Code (NPA/NXX) report for 312-423. Did you mean to search the SMS short code 312423?
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.
NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
---|
312-423-0XXX | 7136 | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | CHICGOZN01 | AS | 05/20/2022 | CHICAGO ZONE 1 | IL | MW | 06/16/2022 |
312-423-1XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-2XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-3XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-4XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-5XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-6XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-7XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-8XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-9XXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | RT | | CHICAGO ZONE 1 | IL | MW | |
312-423-XXXX | 6115 | LEVEL 3 COMMUNICATIONS, LLC - IL | CHICGOZN01 | AS | | CHICAGO ZONE 1 | IL | | |
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