NumberResearchRecent thousands-block assignments
66 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2022-03-04 | 562-393-9XXX | T-MOBILE USA, INC. | 6529 | LA HABRA | CA |
| 2022-03-04 | 562-837-5XXX | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2022-03-04 | 562-837-6XXX | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2022-03-04 | 562-837-7XXX | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2022-03-04 | 562-837-8XXX | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2022-03-04 | 564-217-9XXX | T-MOBILE USA, INC. | 6529 | LONGVIEW | WA |
| 2022-03-04 | 657-626-7XXX | T-MOBILE USA, INC. | 6529 | PLACENTIA | CA |
| 2022-03-04 | 840-222-5XXX | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2022-03-04 | 840-222-6XXX | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2022-03-04 | 840-222-7XXX | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2022-03-04 | 840-222-8XXX | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2022-03-04 | 971-395-8XXX | T-MOBILE USA, INC. | 6529 | SEASIDE | OR |
| 2022-03-04 | 971-419-0XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-04 | 971-419-1XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-04 | 971-419-2XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-04 | 971-419-3XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-04 | 971-419-4XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-04 | 971-419-5XXX | T-MOBILE USA, INC. | 6529 | CLACKAMAS | OR |
| 2022-03-03 | 406-402-0XXX | T-MOBILE USA, INC. | 6529 | GREATFALLS | MT |
| 2022-03-02 | 254-419-4XXX | T-MOBILE USA, INC. | 6529 | KILLEEN | TX |
| 2022-03-02 | 572-746-2XXX | T-MOBILE USA, INC. | 6529 | BRITTON | OK |
| 2022-03-01 | 425-543-9XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-03-01 | 737-321-9XXX | T-MOBILE USA, INC. | 6529 | ELGIN | TX |
| 2022-03-01 | 840-216-8XXX | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2022-03-01 | 840-216-9XXX | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2022-02-28 | 213-653-8XXX | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2022-02-28 | 213-653-9XXX | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2022-02-28 | 341-221-7XXX | T-MOBILE USA, INC. | 6529 | HAYWARD | CA |
| 2022-02-28 | 341-221-8XXX | T-MOBILE USA, INC. | 6529 | HAYWARD | CA |
| 2022-02-28 | 341-221-9XXX | T-MOBILE USA, INC. | 6529 | HAYWARD | CA |
| 2022-02-28 | 425-542-0XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-1XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-2XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-3XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-4XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-5XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-6XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-7XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 425-542-8XXX | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2022-02-28 | 430-249-9XXX | T-MOBILE USA, INC. | 6529 | MTPLEASANT | TX |
| 2022-02-28 | 430-297-0XXX | T-MOBILE USA, INC. | 6529 | MTPLEASANT | TX |
| 2022-02-28 | 430-297-9XXX | T-MOBILE USA, INC. | 6529 | MTPLEASANT | TX |
| 2022-02-28 | 442-364-0XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-364-1XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-364-2XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-364-3XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-378-9XXX | T-MOBILE USA, INC. | 6529 | FALLBROOK | CA |
| 2022-02-28 | 442-433-0XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-433-1XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2022-02-28 | 442-646-0XXX | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.