NumberResearchRecent prefix assignments
371 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 |
|---|---|---|---|---|---|
| 217-379 | FRONTIER NORTH, INC. - IL | 1015 | PAXTON | IL | |
| 217-380 | COMMIO, LLC | 939H | LINCOLN | IL | |
| 217-381 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-382 | ODIN TELEPHONE EXCHANGE, INC. | 1065 | MARTINSVL | IL | |
| 217-383 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-384 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-385 | FRONTIER NORTH, INC. - IL | 1015 | BROCTON | IL | |
| 217-386 | FRONTIER NORTH, INC. - IL | 1015 | LODA | IL | |
| 217-387 | FRONTIER NORTH, INC. - IL | 1015 | THAWVILLE | IL | |
| 217-388 | FRONTIER NORTH, INC. - IL | 1015 | MELVIN | IL | |
| 217-390 | T-MOBILE USA, INC. | 6529 | CHAMPAURBN | IL | |
| 217-391 | PAETEC ITEL, LLC | 829J | SPRINGFLD | IL | |
| 217-392 | ADAMS TEL. COOP. | 0976 | AUGUSTA | IL | |
| 217-394 | FRONTIER NORTH, INC. - IL | 1015 | BUCKLEY | IL | |
| 217-395 | FRONTIER NORTH, INC. - IL | 1015 | ROBERTS | IL | |
| 217-396 | FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL | 1000 | LUDLOW | IL | |
| 217-397 | FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL | 1000 | RANKIN | IL | |
| 217-398 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-401 | TELNYX LLC | 073H | BLUFFS | IL | |
| 217-403 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-410 | ONVOY SPECTRUM, LLC | 624H | BEASON | IL | |
| 217-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL | |
| 217-412 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL | |
| 217-413 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL | |
| 217-414 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL | |
| 217-415 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL | |
| 217-416 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL | |
| 217-417 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL | |
| 217-418 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL | |
| 217-419 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL | |
| 217-420 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-421 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-422 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-423 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-424 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-425 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-426 | FRONTIER NORTH, INC. - IL | 1015 | NEW CANTON | IL | |
| 217-427 | ILLINOIS BELL TEL CO | 9329 | CATLIN | IL | |
| 217-428 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-429 | ILLINOIS BELL TEL CO | 9329 | DECATUR | IL | |
| 217-430 | UNITED STATES CELLULAR - IL | 6265 | QUINCY | IL | |
| 217-431 | ILLINOIS BELL TEL CO | 9329 | DANVILLE | IL | |
| 217-432 | FRONTIER NORTH, INC. - IL | 1015 | HULL | IL | |
| 217-433 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | DECATUR | IL | |
| 217-434 | ILLINOIS BELL TEL CO | 9329 | FOWLER | IL | |
| 217-435 | FRONTIER NORTH, INC. - IL | 1015 | WAVERLY | IL | |
| 217-436 | FRONTIER NORTH, INC. - IL | 1015 | PALMYRA | IL | |
| 217-437 | FRONTIER NORTH, INC. - IL | 1015 | ROCKPORT | IL | |
| 217-438 | FRONTIER NORTH, INC. - IL | 1015 | AUBURN | IL | |
| 217-439 | FRONTIER COMMUNICATIONS-MIDLAND, INC. | 1055 | MODESTO | IL |
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.