NumberResearchRecent thousands-block assignments
2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 — NPA 253
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-03-29 | 253-410-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-03-29 | 253-410-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-03-29 | 253-410-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-03-28 | 253-406-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
| 2024-03-28 | 253-406-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
| 2024-03-28 | 253-406-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
| 2024-03-25 | 253-378-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-25 | 253-407-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-03-22 | 253-296-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | DES MOINES | WA |
| 2024-03-22 | 253-452-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | KENT | WA |
| 2024-03-21 | 253-401-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2024-03-21 | 253-401-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2024-03-21 | 253-401-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2024-03-18 | 253-401-3XXX | 3000–3999 | Assigned | NUSO, LLC | 732J | TACOMA | WA |
| 2024-03-18 | 253-401-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | TACOMA | WA |
| 2024-03-11 | 253-401-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2024-03-11 | 253-401-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2024-03-07 | 253-362-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WA | 006F | SUMNER | WA |
| 2024-03-07 | 253-453-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WA | 006F | TACOMAWVLY | WA |
| 2024-03-01 | 253-386-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-03-01 | 253-386-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-03-01 | 253-386-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-03-01 | 253-408-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-02-22 | 253-388-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-388-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-388-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-388-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-407-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-407-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-02-22 | 253-407-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-01-12 | 253-385-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
| 2024-01-12 | 253-386-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-01-12 | 253-386-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-01-12 | 253-386-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-01-12 | 253-388-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-01-12 | 253-406-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
| 2024-01-09 | 253-453-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2024-01-02 | 253-401-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2023-12-22 | 253-354-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2023-12-22 | 253-532-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2023-12-11 | 253-452-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KENT | WA |
| 2023-12-10 | 253-384-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2023-11-27 | 253-878-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMAWVLY | WA |
| 2023-11-03 | 253-385-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAHAM | WA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.