NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 734-715 | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI | |
| 734-717 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ANN ARBOR | MI | |
| 734-718 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI | |
| 734-721 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-722 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-723 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LOSTPNNSUL | MI | |
| 734-727 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-728 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-729 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-730 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ANN ARBOR | MI | |
| 734-732 | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | BELLEVILLE | MI | |
| 734-734 | MI | ||||
| 734-735 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI | |
| 734-736 | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | WAYNE | MI | |
| 734-737 | MICHIGAN BELL TEL CO | 9323 | PLYMOUTH | MI | |
| 734-738 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | PLYMOUTH | MI | |
| 734-740 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | BELLEVILLE | MI | |
| 734-741 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-742 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-743 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-744 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-746 | DEERFIELD FARMERS' TELEPHONE COMPANY - MI | 558A | DUNDEE | MI | |
| 734-747 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-748 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI | |
| 734-750 | MI | ||||
| 734-751 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI | |
| 734-753 | MICHIGAN BELL TEL CO | 9323 | NEW BOSTON | MI | |
| 734-754 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | YPSILANTI | MI | |
| 734-755 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI | |
| 734-756 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WAYNE | MI | |
| 734-757 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | ANN ARBOR | MI | |
| 734-758 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | FLAT ROCK | MI | |
| 734-759 | PAETEC ITEL, LLC | 829J | WYANDOTTE | MI | |
| 734-761 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-762 | MICHIGAN BELL TEL CO | 9323 | LIVONIA | MI | |
| 734-763 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-764 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-765 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAYNE | MI | |
| 734-769 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-771 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT ROCK | MI | |
| 734-775 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT ROCK | MI | |
| 734-776 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAYNE | MI | |
| 734-777 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | MONROE | MI | |
| 734-778 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT ROCK | MI | |
| 734-779 | MICHIGAN BELL TEL CO | 9323 | LIVONIA | MI | |
| 734-780 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | ANN ARBOR | MI | |
| 734-781 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | PLYMOUTH | MI | |
| 734-782 | MICHIGAN BELL TEL CO | 9323 | FLAT ROCK | MI | |
| 734-783 | MICHIGAN BELL TEL CO | 9323 | FLAT ROCK | MI | |
| 734-784 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROMULUS | MI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.