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 |
|---|---|---|---|---|---|
| 217-255 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-256 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | WARSAW | IL | |
| 217-257 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | QUINCY | IL | |
| 217-258 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | MATTOON | IL | |
| 217-259 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | MATTOON | IL | |
| 217-260 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | DANVILLE | IL | |
| 217-262 | FRONTIER NORTH, INC. - IL | 1015 | HAMMOND | IL | |
| 217-263 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-264 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PARIS | IL | |
| 217-265 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-267 | ILLINOIS BELL TEL CO | 9329 | WESTVILLE | IL | |
| 217-268 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | ARCOLA | IL | |
| 217-269 | FRONTIER NORTH, INC. - IL | 1015 | CHRISMAN | IL | |
| 217-272 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | SORENTO | IL | |
| 217-273 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | MATTOON | IL | |
| 217-274 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | DANVILLE | IL | |
| 217-275 | FRONTIER NORTH, INC. - IL | 1015 | VERMILION | IL | |
| 217-276 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MATTOON | IL | |
| 217-277 | ILLINOIS BELL TEL CO | 9329 | QUINCY | IL | |
| 217-278 | ILLINOIS BELL TEL CO | 9329 | CHAMPAURBN | IL | |
| 217-279 | FRONTIER NORTH, INC. - IL | 1015 | WEST UNION | IL | |
| 217-280 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | IL | |
| 217-283 | FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL | 1000 | HOOPESTON | IL | |
| 217-284 | ILLINOIS BELL TEL CO | 9329 | INDIANOLA | IL | |
| 217-285 | FRONTIER NORTH, INC. - IL | 1015 | PITTSFIELD | IL | |
| 217-286 | FRONTIER NORTH, INC. - IL | 1036 | HENNING | IL | |
| 217-287 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | TAYLORVL | IL | |
| 217-288 | FRONTIER NORTH, INC. - IL | 1015 | SIDELL | IL | |
| 217-289 | ADAMS TEL. COOP. | 0976 | HERSMAN | IL | |
| 217-291 | FRONTIER NORTH, INC. - IL | 1015 | JACKSONVL | IL | |
| 217-294 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | MATTOON | IL | |
| 217-296 | ONVOY, LLC | 224C | SHELBYVL | IL | |
| 217-297 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PANA | IL | |
| 217-299 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | SPRINGFLD | IL | |
| 217-300 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | CHAMPAURBN | IL | |
| 217-303 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL | |
| 217-304 | T-MOBILE USA, INC. | 6529 | DANVILLE | IL | |
| 217-305 | T-MOBILE USA, INC. | 6529 | CHAMPAURBN | IL | |
| 217-306 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | IL | |
| 217-309 | TELNYX LLC | 073H | FARMERSVL | IL | |
| 217-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL | |
| 217-314 | METROPCS, INC. | 5562 | LINCOLN | IL | |
| 217-316 | T-MOBILE USA, INC. | 6529 | QUINCY | IL | |
| 217-317 | T-MOBILE USA, INC. | 6529 | MATTOON | IL | |
| 217-318 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHAMPAURBN | IL | |
| 217-321 | PAETEC ITEL, LLC | 829J | SPRINGFLD | IL | |
| 217-322 | FRONTIER COMMUNICATIONS-SCHUYLER, INC. - IL | 1079 | RUSHVILLE | IL | |
| 217-323 | ILLINOIS BELL TEL CO | 9329 | BEARDSTOWN | IL | |
| 217-324 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | LITCHFIELD | IL | |
| 217-325 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | STONINGTON | 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.