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
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-18 | 253-339-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2024-10-18 | 253-410-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-10-18 | 253-417-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | WA |
| 2024-10-18 | 253-500-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2024-10-18 | 253-954-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | TACOMAWVLY | WA |
| 2024-10-16 | 253-501-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUMNER | WA |
| 2024-10-15 | 253-419-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KENT | WA |
| 2024-10-15 | 253-518-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KENT | WA |
| 2024-10-11 | 253-388-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-408-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-10-11 | 253-408-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-10-11 | 253-408-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-10-11 | 253-413-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-417-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-10-11 | 253-418-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-09-25 | 253-413-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WA | 006F | AUBURN | WA |
| 2024-08-30 | 253-413-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-30 | 253-413-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-30 | 253-413-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-30 | 253-413-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-30 | 253-413-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-30 | 253-413-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-08-23 | 253-406-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRAHAM | WA |
| 2024-08-20 | 253-408-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-08-20 | 253-408-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-08-14 | 253-452-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | KENT | WA |
| 2024-08-13 | 253-553-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AUBURN | WA |
| 2024-07-05 | 253-900-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GIG HARBOR | WA |
| 2024-06-28 | 253-408-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PUYALLUP | WA |
| 2024-06-27 | 253-412-8XXX | 8000–8999 | Assigned | NUSO, LLC | 732J | TACOMA | WA |
| 2024-06-27 | 253-412-9XXX | 9000–9999 | Assigned | NUSO, LLC | 732J | TACOMA | WA |
| 2024-05-31 | 253-408-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-05-31 | 253-408-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-05-31 | 253-408-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PUYALLUP | WA |
| 2024-05-31 | 253-410-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-31 | 253-410-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-31 | 253-410-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-31 | 253-410-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-31 | 253-413-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-31 | 253-413-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2024-05-03 | 253-412-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | TACOMA | WA |
| 2024-05-03 | 253-453-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TACOMAWVLY | WA |
| 2024-05-03 | 253-453-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TACOMAWVLY | WA |
| 2024-04-08 | 253-649-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | GIG HARBOR | WA |
| 2024-03-29 | 253-410-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | AUBURN | 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.