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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 217-696 | ADAMS TEL. COOP. | 0976 | GOLDEN | IL | |
| 217-698 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-700 | IL | ||||
| 217-701 | ONVOY, LLC | 224C | MANCHESTER | IL | |
| 217-706 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL | |
| 217-709 | PAETEC ITEL, LLC | 829J | DANVILLE | IL | |
| 217-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL | |
| 217-719 | T-MOBILE USA, INC. | 6529 | JACKSONVL | IL | |
| 217-720 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | SPRINGFLD | IL | |
| 217-721 | T-MOBILE USA, INC. | 6529 | CHAMPAURBN | IL | |
| 217-722 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHAMPAURBN | IL | |
| 217-723 | FRONTIER NORTH, INC. - IL | 1015 | MILTON | IL | |
| 217-725 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | SPRINGFLD | IL | |
| 217-726 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-727 | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GIBSONCITY | IL | |
| 217-728 | FRONTIER NORTH, INC. - IL | 1015 | SULLIVAN | IL | |
| 217-732 | FRONTIER NORTH, INC. - IL | 1015 | LINCOLN | IL | |
| 217-733 | ILLINOIS BELL TEL CO | 9329 | FAIRMOUNT | IL | |
| 217-734 | FRONTIER NORTH, INC. - IL | 1015 | PLEASANTHL | IL | |
| 217-735 | FRONTIER NORTH, INC. - IL | 1015 | LINCOLN | IL | |
| 217-736 | FRONTIER NORTH, INC. - IL | 1015 | WELDON | IL | |
| 217-737 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LINCOLN | IL | |
| 217-738 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | WESTERVELT | IL | |
| 217-739 | MONTROSE MUTUAL TEL. CO. | 1058 | ELLIOTTSTN | IL | |
| 217-741 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL | |
| 217-742 | FRONTIER NORTH, INC. - IL | 1015 | WINCHESTER | IL | |
| 217-743 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | BASCO | IL | |
| 217-744 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-745 | FRONTIER NORTH, INC. - IL | 1015 | SIBLEY | IL | |
| 217-746 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | FERRIS | IL | |
| 217-747 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-748 | FRONTIER NORTH, INC. - IL | 1036 | ROSSVILLE | IL | |
| 217-749 | FRONTIER NORTH, INC. - IL | 1015 | ELLIOTT | IL | |
| 217-750 | T-MOBILE USA, INC. | 6529 | LINCOLN | IL | |
| 217-752 | ILLINOIS CONSOLIDATED TEL. CO. | 1037 | GAYS | IL | |
| 217-753 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-754 | FRONTIER NORTH, INC. - IL | 1015 | BLUFFS | IL | |
| 217-755 | MCDONOUGH TEL. COOP. | 1047 | COLUSA | IL | |
| 217-756 | FRONTIER COMMUNICATIONS OF LAKESIDE, INC. | 1011 | FINDLAY | IL | |
| 217-757 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-759 | FRONTIER NORTH, INC. - IL | 1036 | BISMARCK | IL | |
| 217-761 | ILLINOIS BELL TEL CO | 9329 | SPRINGFLD | IL | |
| 217-762 | FRONTIER NORTH, INC. - IL | 1015 | MONTICELLO | IL | |
| 217-763 | FRONTIER NORTH, INC. - IL | 1015 | CERROGORDO | IL | |
| 217-764 | FRONTIER NORTH, INC. - IL | 1015 | MACON | IL | |
| 217-765 | FRONTIER NORTH, INC. - IL | 1036 | ALVIN | IL | |
| 217-766 | T-MOBILE USA, INC. | 6529 | CHAMPAURBN | IL | |
| 217-767 | FRONTIER NORTH, INC. - IL | 1015 | ELWIN | IL | |
| 217-768 | FRONTIER COMMUNICATIONS OF ILLINOIS, INC. | 1038 | MOWEAQUA | IL | |
| 217-773 | FRONTIER NORTH, INC. - IL | 1015 | MTSTERLING | 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.