NumberResearchRecent thousands-block assignments
23 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 737
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 |
|---|---|---|---|---|---|---|---|
| 2021-12-16 | 737-372-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BUCHANNDAM | TX |
| 2021-12-16 | 737-537-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAMPASAS | TX |
| 2021-12-16 | 737-766-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LEANDER | TX |
| 2021-12-16 | 737-773-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JARRELL | TX |
| 2021-12-16 | 737-877-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BUDA | TX |
| 2021-12-13 | 737-310-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | WIMBERLEY | TX |
| 2021-12-13 | 737-386-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LAMPASAS | TX |
| 2021-12-13 | 737-386-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LAMPASAS | TX |
| 2021-12-13 | 737-386-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LAMPASAS | TX |
| 2021-12-13 | 737-788-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BURNET | TX |
| 2021-12-10 | 737-282-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DALE/LTNSP | TX |
| 2021-12-09 | 737-275-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2021-12-09 | 737-290-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2021-12-09 | 737-309-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2021-12-09 | 737-309-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2021-12-02 | 737-310-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | WIMBERLEY | TX |
| 2021-12-02 | 737-310-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | WIMBERLEY | TX |
| 2021-11-29 | 737-310-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WIMBERLEY | TX |
| 2021-11-29 | 737-678-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DRIPPNGSPG | TX |
| 2021-11-24 | 737-303-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | SAN MARCOS | TX |
| 2021-11-24 | 737-303-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SAN MARCOS | TX |
| 2021-11-17 | 737-309-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2021-11-16 | 737-309-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-309-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-309-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-309-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-312-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KYLE | TX |
| 2021-11-16 | 737-312-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KYLE | TX |
| 2021-11-16 | 737-312-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KYLE | TX |
| 2021-11-16 | 737-420-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-420-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-707-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-707-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-16 | 737-707-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2021-11-12 | 737-251-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BURNET | TX |
| 2021-11-12 | 737-386-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LAMPASAS | TX |
| 2021-11-10 | 737-283-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOMETA | TX |
| 2021-11-10 | 737-283-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOMETA | TX |
| 2021-11-10 | 737-307-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BERTRAM | TX |
| 2021-11-10 | 737-307-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BERTRAM | TX |
| 2021-11-10 | 737-337-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FENTRESS | TX |
| 2021-11-10 | 737-337-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FENTRESS | TX |
| 2021-11-10 | 737-366-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MILANO | TX |
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.