NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 217-653 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | QUINCY | IL |
| — | 217-671 | 2XXX3XXX4XXX5XXX6XXX8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LINCOLN | IL |
| — | 217-690 | 2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EFFINGHAM | IL |
| — | 217-691 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL |
| — | 217-706 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL |
| — | 217-737 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LINCOLN | IL |
| — | 217-741 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL |
| — | 217-778 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL |
| — | 217-779 | 4XXX5XXX6XXX8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | QUINCY | IL |
| — | 217-781 | 8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GIBSONCITY | IL |
| — | 217-791 | 5XXX6XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL |
| — | 217-822 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARSHALL | IL |
| — | 217-823 | 5XXX6XXX7XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TAYLORVL | IL |
| — | 217-825 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TAYLORVL | IL |
| — | 217-827 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TAYLORVL | IL |
| — | 217-891 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL |
| — | 217-898 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL |
| — | 217-899 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL |
| — | 217-971 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRINGFLD | IL |
| — | 217-972 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DECATUR | IL |
| — | 217-975 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MATTOON | IL |
| — | 217-979 | 0XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAMPAURBN | IL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.