NumberResearchRecent thousands-block assignments
5 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 206
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 |
|---|---|---|---|---|---|---|---|
| 2024-08-06 | 206-797-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-230-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-341-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-440-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-493-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-493-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-608-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-07-12 | 206-608-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-07-12 | 206-608-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-07-12 | 206-608-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-07-12 | 206-732-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-776-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-792-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-837-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-07-12 | 206-837-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-06-07 | 206-506-2XXX | 2000–2999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2024-06-07 | 206-516-1XXX | 1000–1999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2024-06-07 | 206-925-0XXX | 0000–0999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2024-06-07 | 206-925-2XXX | 2000–2999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2024-05-31 | 206-797-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-05-31 | 206-797-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-05-31 | 206-797-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-05-31 | 206-797-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-05-31 | 206-797-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-05-30 | 206-608-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-05-30 | 206-608-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-05-30 | 206-608-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-05-23 | 206-925-1XXX | 1000–1999 | Assigned | CALLWORKS CORPORATION | 475J | SEATTLE | WA |
| 2024-05-17 | 206-738-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WA | 006F | VASHON | WA |
| 2024-04-30 | 206-341-5XXX | 5000–5999 | Assigned | VONAGE AMERICA LLC | 197D | SEATTLE | WA |
| 2024-04-26 | 206-804-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BAINBDG IS | WA |
| 2024-04-12 | 206-608-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2024-04-08 | 206-506-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | SEATTLE | WA |
| 2024-03-26 | 206-569-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RICHMNDBCH | WA |
| 2024-03-22 | 206-738-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | VASHON | WA |
| 2024-03-21 | 206-493-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | SEATTLE | WA |
| 2024-03-21 | 206-506-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SEATTLE | WA |
| 2024-03-15 | 206-493-4XXX | 4000–4999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2024-03-15 | 206-493-6XXX | 6000–6999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2023-12-10 | 206-230-1XXX | 1000–1999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2023-12-10 | 206-230-2XXX | 2000–2999 | Assigned | NUSO, LLC | 478J | SEATTLE | WA |
| 2023-12-10 | 206-776-8XXX | 8000–8999 | Assigned | FIVE9, INC. | 598J | SEATTLE | WA |
| 2023-11-20 | 206-608-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2023-11-20 | 206-608-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2023-09-21 | 206-803-9XXX | 9000–9999 | Assigned | VONAGE AMERICA LLC | 197D | BAINBDG IS | WA |
| 2023-09-01 | 206-837-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF WASHINGTON, LLC - WA | 159F | SEATTLE | WA |
| 2023-07-13 | 206-837-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SEATTLE | WA |
| 2023-06-05 | 206-410-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WA | 483E | SEATTLE | WA |
| 2023-06-05 | 206-410-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WA | 483E | SEATTLE | WA |
| 2023-06-05 | 206-410-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WA | 483E | SEATTLE | 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.