NumberResearchRecent prefix assignments
369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 989-757 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-758 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-759 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-761 | FRONTIER NORTH, INC. - MI | 0695 | CLIFFORD | MI | |
| 989-762 | FRONTIER NORTH, INC. - MI | 0695 | MCBRIDES | MI | |
| 989-766 | FRONTIER NORTH, INC. - MI | 0695 | POSEN | MI | |
| 989-770 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-771 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-772 | FRONTIER NORTH, INC. - MI | 0695 | MTPLEASANT | MI | |
| 989-773 | FRONTIER NORTH, INC. - MI | 0695 | MTPLEASANT | MI | |
| 989-774 | FRONTIER NORTH, INC. - MI | 0695 | MTPLEASANT | MI | |
| 989-775 | FRONTIER NORTH, INC. - MI | 0695 | MTPLEASANT | MI | |
| 989-776 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-777 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-779 | FRONTIER NORTH, INC. - MI | 0695 | MTPLEASANT | MI | |
| 989-781 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-785 | FRONTIER NORTH, INC. - MI | 0695 | ATLANTA | MI | |
| 989-786 | FRONTIER NORTH, INC. - MI | 0695 | LEWISTON | MI | |
| 989-790 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-791 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-792 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-793 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-795 | WOLVERINE TEL. CO. | 0738 | FOSTORIA | MI | |
| 989-797 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-798 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SAGINAW | MI | |
| 989-799 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-801 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BRECKENRDG | MI | |
| 989-802 | MICHIGAN BELL TEL CO | 9323 | CLARE | MI | |
| 989-807 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VESTABURG | MI | |
| 989-808 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSCOMMON | MI | |
| 989-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MI | |
| 989-814 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SIX LAKES | MI | |
| 989-818 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAKEVIEW | MI | |
| 989-819 | ONVOY, LLCV - MI | 543C | CASEVILLE | MI | |
| 989-820 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EAST TAWAS | MI | |
| 989-821 | FRONTIER NORTH, INC. - MI | 0695 | HIGGINS LK | MI | |
| 989-822 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BARRYTON | MI | |
| 989-823 | MICHIGAN BELL TEL CO | 9323 | VASSAR | MI | |
| 989-824 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MTPLEASANT | MI | |
| 989-826 | FRONTIER NORTH, INC. - MI | 0695 | MIO | MI | |
| 989-828 | FRONTIER NORTH, INC. - MI | 0695 | SHEPHERD | MI | |
| 989-829 | SPOK, INC. | 6630 | OWOSSO | MI | |
| 989-830 | MICHIGAN BELL TEL CO | 9323 | SAGINAW | MI | |
| 989-831 | FRONTIER NORTH, INC. - MI | 0695 | STANTON | MI | |
| 989-832 | MICHIGAN BELL TEL CO | 9323 | MIDLAND | MI | |
| 989-833 | FRONTIER NORTH, INC. - MI | 0695 | RIVERDALE | MI | |
| 989-834 | FRONTIER NORTH, INC. - MI | 0695 | OVID | MI | |
| 989-835 | MICHIGAN BELL TEL CO | 9323 | MIDLAND | MI | |
| 989-836 | FRONTIER MIDSTATES, INC. - MI | 0681 | ALGER | MI | |
| 989-837 | MICHIGAN BELL TEL CO | 9323 | MIDLAND | MI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.