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
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 309-677 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-678 | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL | |
| 309-679 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-680 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-681 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-682 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-683 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-684 | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | BLOOMINGTN | IL | |
| 309-685 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-686 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-687 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-688 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-689 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-690 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-691 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-692 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-693 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-694 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-695 | FRONTIER NORTH, INC. - IL | 1015 | WYOMING | IL | |
| 309-696 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL | |
| 309-697 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-698 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-699 | ILLINOIS BELL TEL CO | 9329 | PEORIA | IL | |
| 309-700 | IL | ||||
| 309-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL | |
| 309-713 | COMCAST IP PHONE, LLC | 318J | PEORIA | IL | |
| 309-722 | FRONTIER NORTH, INC. - IL | 1015 | BELLFLOWER | IL | |
| 309-723 | FRONTIER NORTH, INC. - IL | 1015 | COLFAX | IL | |
| 309-724 | FRONTIER NORTH, INC. - IL | 1015 | ELLSWORTH | IL | |
| 309-725 | FRONTIER COMMUNICATIONS OF ILLINOIS, INC. | 1038 | COOKSVILLE | IL | |
| 309-726 | FRONTIER NORTH, INC. - IL | 1015 | HUDSON | IL | |
| 309-727 | FRONTIER NORTH, INC. - IL | 1015 | ARROWSMITH | IL | |
| 309-728 | FRONTIER COMMUNICATIONS OF ILLINOIS, INC. | 1038 | TOWANDA | IL | |
| 309-729 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | LITTLEYORK | IL | |
| 309-732 | ILLINOIS BELL TEL CO | 9329 | ROCKISLAND | IL | |
| 309-734 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | MONMOUTH | IL | |
| 309-735 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BLOOMINGTN | IL | |
| 309-736 | ILLINOIS BELL TEL CO | 9329 | MOLINE | IL | |
| 309-737 | UNITED STATES CELLULAR - IL | 6265 | ROCKISLAND | IL | |
| 309-738 | UNITED STATES CELLULAR - IL | 6265 | ROCKISLAND | IL | |
| 309-742 | FRONTIER NORTH, INC. - IL | 1015 | ELMWOOD | IL | |
| 309-743 | ILLINOIS BELL TEL CO | 9329 | MOLINE | IL | |
| 309-744 | FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL | 1000 | SECOR | IL | |
| 309-745 | FRONTIER NORTH, INC. - IL | 1015 | SUNNYLAND | IL | |
| 309-746 | MCDONOUGH TEL. COOP. | 1047 | RARITAN | IL | |
| 309-747 | GRIDLEY TEL. CO. | 1023 | GRIDLEY | IL | |
| 309-748 | ILLINOIS BELL TEL CO | 9329 | EASTMOLINE | IL | |
| 309-749 | ILLINOIS BELL TEL CO | 9329 | EASTMOLINE | IL | |
| 309-751 | ILLINOIS BELL TEL CO | 9329 | EASTMOLINE | IL | |
| 309-752 | ILLINOIS BELL TEL CO | 9329 | EASTMOLINE | IL |
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.