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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-23 | 253-429-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-10-23 | 253-429-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-10-23 | 253-429-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-10-23 | 253-429-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-10-03 | 253-419-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KENT | WA |
| 2025-09-25 | 253-427-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2025-09-25 | 253-427-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2025-09-25 | 253-427-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2025-09-19 | 253-430-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GIG HARBOR | WA |
| 2025-09-15 | 253-429-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-09-15 | 253-429-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-09-15 | 253-429-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-09-15 | 253-429-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-09-05 | 253-430-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GIG HARBOR | WA |
| 2025-08-25 | 253-339-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2025-08-25 | 253-831-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2025-08-25 | 253-921-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2025-08-21 | 253-429-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | AUBURN | WA |
| 2025-08-19 | 253-418-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2025-08-19 | 253-424-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2025-08-19 | 253-424-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2025-08-19 | 253-424-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-08-19 | 253-424-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-08-19 | 253-424-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-08-19 | 253-424-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-08-19 | 253-424-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-08-19 | 253-424-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-07-29 | 253-427-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMA | WA |
| 2025-07-25 | 253-339-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMAWVLY | WA |
| 2025-07-14 | 253-427-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2025-07-14 | 253-427-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2025-07-14 | 253-427-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2025-07-14 | 253-427-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2025-07-14 | 253-427-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TACOMA | WA |
| 2025-07-03 | 253-501-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUMNER | WA |
| 2025-06-20 | 253-424-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-20 | 253-424-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-18 | 253-422-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-18 | 253-422-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-18 | 253-422-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-18 | 253-422-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-18 | 253-422-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-05 | 253-412-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | TACOMA | WA |
| 2025-06-05 | 253-412-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | TACOMA | WA |
| 2025-06-02 | 253-422-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-02 | 253-422-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-02 | 253-422-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-02 | 253-422-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-06-02 | 253-422-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2025-05-09 | 253-509-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | GIG HARBOR | 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.