NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026
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.
Most active assignees, all time — NPA 850
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 850-504 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-513 | 2XXX which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-514 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-521 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-523 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-526 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | MARIANNA | FL |
| — | 850-531 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-534 | 1XXX6XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | SEAGRV BCH | FL |
| — | 850-536 | 6XXX8XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-537 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | CRESTVIEW | FL |
| — | 850-547 | 6XXX which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | BONIFAY | FL |
| — | 850-548 | 2XXX8XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | WESTVILLE | FL |
| — | 850-552 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-553 | 0XXX1XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-561 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-562 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-569 | 7XXX which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | GREENWOOD | FL |
| — | 850-574 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-575 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-576 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-577 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-579 | none assigned yet which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | GREENWOOD | FL |
| — | 850-580 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-581 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | FTWALTNBCH | FL |
| — | 850-592 | 7XXX which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | GREENWOOD | FL |
| — | 850-593 | 7XXX8XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | SNEADS | FL |
| — | 850-594 | 2XXX which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | GREENWOOD | FL |
| — | 850-599 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-609 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | SHALIMAR | FL |
| — | 850-622 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | SANROSABCH | FL |
| — | 850-644 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-645 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-650 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DESTIN | FL |
| — | 850-651 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | SHALIMAR | FL |
| — | 850-654 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DESTIN | FL |
| — | 850-656 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-664 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | FTWALTNBCH | FL |
| — | 850-668 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-671 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-678 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DESTIN | FL |
| — | 850-681 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | TALLAHASSE | FL |
| — | 850-682 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | CRESTVIEW | FL |
| — | 850-683 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | CRESTVIEW | FL |
| — | 850-689 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | CRESTVIEW | FL |
| — | 850-718 | none assigned yet which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | MARIANNA | FL |
| — | 850-729 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DESTIN | FL |
| — | 850-796 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | FTWALTNBCH | FL |
| — | 850-833 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | FTWALTNBCH | FL |
| — | 850-835 | not yet reported which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | FREEPORT | FL |
| — | 850-836 | 1XXX3XXX · 2 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | PONCE LEON | FL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.