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
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 309-357 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CANTON | IL | |
| 309-358 | MID CENTURY TEL. COOP., INC. | 1054 | YATES CITY | IL | |
| 309-359 | FRONTIER NORTH, INC. - IL | 1015 | MACKINAW | IL | |
| 309-360 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL | |
| 309-361 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL | |
| 309-362 | ILLINOIS BELL TEL CO | 9329 | TRIVOLI | IL | |
| 309-363 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL | |
| 309-364 | FRONTIER NORTH, INC. - IL | 1015 | HENRY | IL | |
| 309-365 | FRONTIER NORTH, INC. - IL | 1015 | LEXINGTON | IL | |
| 309-366 | METAMORA TEL. CO. | 1053 | METAMORA | IL | |
| 309-367 | METAMORA TEL. CO. | 1053 | METAMORA | IL | |
| 309-368 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | GALESBURG | IL | |
| 309-369 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL | |
| 309-370 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL | |
| 309-371 | UNITED STATES CELLULAR - IL | 6265 | GALESBURG | IL | |
| 309-372 | REYNOLDS TEL. CO., INC. | 1075 | REYNOLDS | IL | |
| 309-373 | UNITED STATES CELLULAR - IL | 6265 | ROCKISLAND | IL | |
| 309-374 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | KEITHSBURG | IL | |
| 309-375 | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | WATAGA | IL | |
| 309-376 | FRONTIER NORTH, INC. - IL | 1015 | CARLOCK | IL | |
| 309-377 | FRONTIER NORTH, INC. - IL | 1015 | CROPSEY | IL | |
| 309-378 | FRONTIER NORTH, INC. - IL | 1015 | DOWNS | IL | |
| 309-379 | FRONTIER NORTH, INC. - IL | 1015 | STANFORD | IL | |
| 309-382 | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | NORTHPEKIN | IL | |
| 309-383 | METAMORA TEL. CO. | 1053 | GERMATNHLS | IL | |
| 309-385 | FRONTIER NORTH, INC. - IL | 1015 | PRINCEVL | IL | |
| 309-386 | ONVOY, LLC | 224C | BLOOMINGTN | IL | |
| 309-387 | FRONTIER NORTH, INC. - IL | 1015 | GROVELAND | IL | |
| 309-389 | GLASFORD TEL. CO. | 1017 | GLASFORD | IL | |
| 309-392 | FRONTIER NORTH, INC. - IL | 1015 | MINIERAGTN | IL | |
| 309-393 | ONVOY, LLC | 224C | BENSON | IL | |
| 309-394 | FRONTIER NORTH, INC. - IL | 1015 | BENSON | IL | |
| 309-397 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL | |
| 309-399 | FRONTIER NORTH, INC. - IL | 1015 | LA ROSE | IL | |
| 309-401 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-402 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-403 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-404 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-405 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-406 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-407 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-408 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-409 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-410 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL | |
| 309-412 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-413 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-414 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-415 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL | |
| 309-416 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | 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.