NumberResearchRecent thousands-block assignments
2 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 — NPA 530
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Apr 2026
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-04 | 530-998-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2026-09-04 | 530-998-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2026-08-04 | 530-775-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | YREKA | CA |
| 2026-07-08 | 530-697-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MT SHASTA | CA |
| 2026-01-07 | 530-775-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | YREKA | CA |
| 2026-01-06 | 530-998-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2026-01-06 | 530-998-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2026-01-06 | 530-998-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-10-30 | 530-202-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-10-30 | 530-998-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-10-30 | 530-998-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-10-30 | 530-998-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-10-17 | 530-931-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SUSANVILLE | CA |
| 2025-09-18 | 530-996-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-09-18 | 530-996-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-09-18 | 530-996-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-06-30 | 530-996-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-06-30 | 530-996-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-06-30 | 530-996-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-06-30 | 530-996-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-04-25 | 530-996-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-04-25 | 530-996-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-04-25 | 530-996-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2025-03-28 | 530-995-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | QUINCY | CA |
| 2025-03-21 | 530-239-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MT SHASTA | CA |
| 2025-03-21 | 530-250-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SUSANVILLE | CA |
| 2025-03-21 | 530-708-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALTURAS | CA |
| 2025-03-21 | 530-937-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | YREKA | CA |
| 2025-03-21 | 530-992-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WEAVERVL | CA |
| 2024-10-17 | 530-981-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-10-17 | 530-981-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-10-17 | 530-981-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-10-17 | 530-981-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-09-11 | 530-270-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | GRVY MAIN | CA |
| 2024-08-19 | 530-376-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DAVIS | CA |
| 2024-08-19 | 530-980-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODLAND | CA |
| 2024-08-19 | 530-981-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-08-19 | 530-981-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-08-19 | 530-981-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-08-19 | 530-981-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-07-12 | 530-983-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-07-12 | 530-983-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-07-12 | 530-983-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-07-12 | 530-983-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-07-12 | 530-983-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-06-25 | 530-452-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NTAH THCY | CA |
| 2024-06-12 | 530-980-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODLAND | CA |
| 2024-06-12 | 530-980-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODLAND | CA |
| 2024-05-22 | 530-202-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2024-05-22 | 530-765-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RED BLUFF | 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.