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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 734-554 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WILLIS | MI | |
| 734-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | MI | |
| 734-556 | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | WYANDOTTE | MI | |
| 734-557 | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | YPSILANTI | MI | |
| 734-558 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WYANDOTTE | MI | |
| 734-559 | PAETEC ITEL, LLC | 829J | TRENTON | MI | |
| 734-560 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WAYNE | MI | |
| 734-561 | PAETEC ITEL, LLC | 829J | TRENTON | MI | |
| 734-562 | COMCAST IP PHONE, LLC | 318J | CHELSEA | MI | |
| 734-564 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | PLYMOUTH | MI | |
| 734-566 | AMERICAN MESSAGING SERVICES, LLC | 9748 | PLYMOUTH | MI | |
| 734-567 | PAETEC ITEL, LLC | 829J | WILLIS | MI | |
| 734-571 | TELNET WORLDWIDE, INC. | 817J | TRENTON | MI | |
| 734-572 | MICHIGAN BELL TEL CO | 9323 | YPSILANTI | MI | |
| 734-573 | TELNET WORLDWIDE, INC. | 817J | YPSILANTI | MI | |
| 734-574 | TELNET WORLDWIDE, INC. | 817J | WYANDOTTE | MI | |
| 734-576 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | YPSILANTI | MI | |
| 734-578 | WOW! INTERNET, CABLE AND PHONE | 961J | WAYNE | MI | |
| 734-582 | MICHIGAN BELL TEL CO | 9323 | PLYMOUTH | MI | |
| 734-585 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ANN ARBOR | MI | |
| 734-586 | BRIGHTSPEED OF MICHIGAN, LLC | 0702 | NEWPORT | MI | |
| 734-587 | FRONTIER NORTH, INC. - MI | 0695 | MAYBEE | MI | |
| 734-588 | 123.NET, LLC | 2550 | WILLIS | MI | |
| 734-591 | MICHIGAN BELL TEL CO | 9323 | LIVONIA | MI | |
| 734-592 | XO COMMUNICATIONS SERVICES, INC. - MI | 4125 | NEW BOSTON | MI | |
| 734-593 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | CHELSEA | MI | |
| 734-595 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-604 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ANN ARBOR | MI | |
| 734-610 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WILLIS | MI | |
| 734-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MI | |
| 734-612 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAYNE | MI | |
| 734-615 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-616 | MI | ||||
| 734-621 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MONROE | MI | |
| 734-622 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-623 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-625 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI | |
| 734-626 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WYANDOTTE | MI | |
| 734-627 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CHELSEA | MI | |
| 734-628 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MILAN | MI | |
| 734-629 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WAYNE | MI | |
| 734-632 | MICHIGAN BELL TEL CO | 9323 | LIVONIA | MI | |
| 734-633 | TELNET WORLDWIDE, INC. | 817J | NEW BOSTON | MI | |
| 734-634 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI | |
| 734-635 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | YPSILANTI | MI | |
| 734-638 | TELNET WORLDWIDE, INC. | 817J | WYANDOTTE | MI | |
| 734-639 | PAETEC ITEL, LLC | 829J | MONROE | MI | |
| 734-641 | MICHIGAN BELL TEL CO | 9323 | WAYNE | MI | |
| 734-642 | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | TRENTON | MI | |
| 734-644 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | YPSILANTI | 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.