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 |
|---|---|---|---|---|---|---|
| 2016-02-25 | 682-385 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2015-09-22 | 682-320 | 0–9 XXXall 10 · 4 holders which blocks → | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2014-11-26 | 682-314 | 0–9 XXXall 10 · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2014-07-07 | 682-242 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2014-05-28 | 682-303 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2013-01-28 | 682-582 | 0–9 XXXall 10 · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | WEATHERFD | TX |
| 2011-09-15 | 682-212 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | KELLER | TX |
| 2010-09-09 | 682-388 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL | 9533 | ROANOKE | TX |
| 2007-10-15 | 682-236 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2001-06-14 | 682-286 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2001-05-02 | 682-867 | not yet reported which blocks → | SOUTHWESTERN BELL | 9533 | ARLINGTON | TX |
| 2001-03-07 | 682-518 | 2XXX3XXX4XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | MANSFIELD | TX |
| 2001-03-07 | 682-647 | 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2001-03-07 | 682-885 | not yet reported which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| 2001-01-10 | 682-237 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | ROANOKE | TX |
| — | 682-628 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | ALVARADO | TX |
| — | 682-730 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | SOUTHWESTERN BELL | 9533 | FORT WORTH | TX |
| — | 682-831 | not yet reported which blocks → | SOUTHWESTERN BELL | 9533 | ROANOKE | TX |
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.