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 |
|---|---|---|---|---|---|---|---|
| 2018-03-28 | 737-471-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2018-03-28 | 737-471-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2018-03-26 | 737-231-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2018-03-26 | 737-231-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2018-03-26 | 737-414-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BUDA | TX |
| 2018-03-23 | 737-221-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | TX |
| 2018-03-22 | 737-471-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2018-03-22 | 737-471-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2018-03-21 | 737-228-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2018-03-21 | 737-250-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MARTINDALE | TX |
| 2018-03-19 | 737-228-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-19 | 737-230-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-03-13 | 737-245-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | GEORGETOWN | TX |
| 2018-03-06 | 737-213-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MARCOS | TX |
| 2018-02-26 | 737-245-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | GEORGETOWN | TX |
| 2018-02-26 | 737-260-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | DRIPPNGSPG | TX |
| 2018-02-26 | 737-299-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | LAMPASAS | TX |
| 2018-02-23 | 737-702-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | GRANGER | TX |
| 2018-02-23 | 737-747-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | BURNET | TX |
| 2018-02-23 | 737-881-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | BASTROP | TX |
| 2018-02-22 | 737-250-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | MARTINDALE | TX |
| 2018-02-06 | 737-237-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-06 | 737-237-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2018-02-05 | 737-216-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | TAYLOR | TX |
| 2018-02-05 | 737-227-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | WIMBERLEY | TX |
| 2018-02-05 | 737-757-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | LEANDER | TX |
| 2018-01-12 | 737-230-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-12 | 737-230-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-12 | 737-230-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-12 | 737-230-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-12 | 737-248-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | KYLE | TX |
| 2018-01-09 | 737-217-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-09 | 737-229-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-09 | 737-615-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2018-01-03 | 737-808-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | GEORGETOWN | TX |
| 2017-12-22 | 737-232-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELGIN | TX |
| 2017-12-22 | 737-232-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELGIN | TX |
| 2017-12-14 | 737-615-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2017-12-11 | 737-221-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAN MARCOS | 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.