NumberResearchRecent prefix assignments
1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| 2013-09-23 | 682-802 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2012-11-30 | 682-217 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2010-01-25 | 682-239 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | WEATHERFD | TX |
| 2008-08-04 | 682-241 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2008-06-25 | 682-230 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2008-01-14 | 682-227 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-09-05 | 682-583 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-04-19 | 682-367 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2007-04-03 | 682-234 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2006-10-25 | 682-203 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2001-10-23 | 682-438 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2001-10-09 | 682-323 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2001-09-24 | 682-622 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2001-08-23 | 682-667 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-248 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-365 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-465 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-472 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-521 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-551 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-552 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-553 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-554 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-556 | 3XXX4XXX5XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-557 | 2XXX3XXX4XXX5XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-558 | 2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-559 | 2XXX3XXX4XXX5XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-560 | 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-561 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-597 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| — | 682-970 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | CLEBURNE | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.