NumberResearchRecent thousands-block assignments
4,350 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
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-06-16 | 737-440-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 754-352-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - FL | 982E | DEERFLDBCH | FL |
| 2026-06-16 | 779-265-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MCHENRY | IL |
| 2026-06-16 | 806-760-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BROWNFIELD | TX |
| 2026-06-16 | 817-328-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2026-06-16 | 817-748-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2026-06-16 | 820-227-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SANTAMARIA | CA |
| 2026-06-16 | 820-242-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | EL RIO | CA |
| 2026-06-16 | 826-230-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LOUISA | VA |
| 2026-06-16 | 826-287-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ROANOKE | VA |
| 2026-06-16 | 838-312-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ALBANY | NY |
| 2026-06-16 | 838-379-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | SCHENCTADY | NY |
| 2026-06-16 | 840-285-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | FONTANA | CA |
| 2026-06-16 | 847-972-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF ILLINOIS, LLC - IL | 063E | SKOKIE | IL |
| 2026-06-16 | 863-659-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | LAKEPLACID | FL |
| 2026-06-16 | 915-377-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EL PASO | TX |
| 2026-06-16 | 929-750-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN14 | NY |
| 2026-06-16 | 929-871-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN10 | NY |
| 2026-06-16 | 931-482-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MCBURG | TN |
| 2026-06-16 | 945-416-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LEWISVILLE | TX |
| 2026-06-16 | 945-450-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 945-450-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2026-06-16 | 948-224-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | NWPTNWSZN1 | VA |
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.