NumberResearchRecent thousands-block assignments
3 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 817
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 |
|---|---|---|---|---|---|---|---|
| 2018-03-09 | 817-936-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-03-09 | 817-936-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2018-02-14 | 817-697-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | KELLER | TX |
| 2018-02-05 | 817-775-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | KENNEDALE | TX |
| 2018-02-05 | 817-857-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | EULESS | TX |
| 2018-02-02 | 817-207-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | FORT WORTH | TX |
| 2018-02-02 | 817-207-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | FORT WORTH | TX |
| 2018-02-02 | 817-207-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | FORT WORTH | TX |
| 2018-01-02 | 817-647-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2018-01-02 | 817-647-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2018-01-02 | 817-647-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2017-12-14 | 817-630-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-12-14 | 817-630-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2017-11-28 | 817-391-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | EULESS | TX |
| 2017-11-22 | 817-663-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | NRICHLDHLS | TX |
| 2017-11-22 | 817-663-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | NRICHLDHLS | TX |
| 2017-11-20 | 817-270-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | AZLE | TX |
| 2017-11-20 | 817-409-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ALVARADO | TX |
| 2017-11-20 | 817-767-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ROANOKE | TX |
| 2017-10-16 | 817-243-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANBURY | TX |
| 2017-10-16 | 817-395-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2017-10-10 | 817-353-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2017-10-04 | 817-664-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2017-09-26 | 817-489-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FORT WORTH | TX |
| 2017-09-22 | 817-664-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ARLINGTON | TX |
| 2017-09-15 | 817-249-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | FORT WORTH | TX |
| 2017-07-28 | 817-440-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ATLAS | TX |
| 2017-07-18 | 817-697-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | KELLER | TX |
| 2017-07-17 | 817-720-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | FORT WORTH | TX |
| 2017-07-12 | 817-550-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | WEATHERFD | TX |
| 2017-06-29 | 817-662-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | EULESS | TX |
| 2017-06-26 | 817-395-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GLENDALE | TX |
| 2017-06-26 | 817-395-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2017-06-26 | 817-395-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2017-06-26 | 817-647-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2017-06-15 | 817-910-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ACTON | TX |
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.