NumberResearchRecent thousands-block assignments
4,257 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/30/2026
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
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
Quick find in this area code:
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-08-20 | 479-578-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 479-578-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTONVL | AR |
| 2025-08-20 | 501-527-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | LITTLEROCK | AR |
| 2025-08-20 | 501-561-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | LITTLEROCK | AR |
| 2025-08-20 | 503-503-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SHERWOOD | OR |
| 2025-08-20 | 507-861-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | FARIBAULT | MN |
| 2025-08-20 | 507-861-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | FARIBAULT | MN |
| 2025-08-20 | 530-267-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHICO | CA |
| 2025-08-20 | 540-606-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | VA |
| 2025-08-20 | 559-937-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REEDLEY | CA |
| 2025-08-20 | 559-962-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-962-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 559-965-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2025-08-20 | 562-820-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-820-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-820-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-936-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-936-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-961-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-961-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 562-961-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2025-08-20 | 571-691-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSNGTNZN17 | VA |
| 2025-08-20 | 571-717-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WSNGTNZN17 | VA |
| 2025-08-20 | 571-741-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BRADDOCK | VA |
| 2025-08-20 | 575-314-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMOGORDO | NM |
| 2025-08-20 | 620-380-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | IOLA | KS |
| 2025-08-20 | 620-733-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF KANSAS, LLC - KS | 018H | PROTECTION | KS |
| 2025-08-20 | 629-321-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | OLDHICKORY | TN |
| 2025-08-20 | 645-237-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NORTH DADE | FL |
| 2025-08-20 | 645-237-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NORTH DADE | FL |
| 2025-08-20 | 645-237-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NORTH DADE | FL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.