NumberResearchRecent thousands-block assignments
0 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, all time — NPA 903
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-02-10 | 903-979-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | JEWETT | TX |
| 2025-02-10 | 903-979-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | JEWETT | TX |
| 2023-12-04 | 903-840-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | EDGEWOOD | TX |
| 2023-12-04 | 903-840-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | EDGEWOOD | TX |
| 2021-05-12 | 903-350-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | OWENTOWN | TX |
| 2021-05-12 | 903-666-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | JEFFERSON | TX |
| 2021-05-08 | 903-333-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | JEWETT | TX |
| 2021-05-08 | 903-896-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | EDGEWOOD | TX |
| 2021-05-07 | 903-257-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CORSICANA | TX |
| 2021-05-07 | 903-361-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DENISON | TX |
| 2021-02-22 | 903-434-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MTPLEASANT | TX |
| 2021-02-22 | 903-653-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | LONGVIEW | TX |
| 2020-09-29 | 903-991-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TYLER | TX |
| 2019-04-22 | 903-429-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | COLLINSVL | TX |
| 2017-11-20 | 903-228-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | GUNTER | TX |
| 2017-11-20 | 903-290-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | TOM BEAN | TX |
| 2017-11-20 | 903-329-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ROANE | TX |
| 2017-11-20 | 903-412-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | SHIRLEY | TX |
| 2017-11-20 | 903-419-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | POTTSBORO | TX |
| 2017-11-20 | 903-443-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | LADONIA | TX |
| 2017-11-20 | 903-453-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GREENVILLE | TX |
| 2017-11-20 | 903-464-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | DENISON | TX |
| 2017-11-20 | 903-486-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BONHAM | TX |
| 2017-11-20 | 903-488-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | COMO | TX |
| 2017-11-20 | 903-518-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BELLSSAVOY | TX |
| 2017-11-20 | 903-527-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | CADDOMILLS | TX |
| 2017-11-20 | 903-532-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HOWE | TX |
| 2017-11-20 | 903-587-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LEONARD | TX |
| 2017-11-20 | 903-626-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | JEWETT | TX |
| 2017-11-20 | 903-651-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | WHITESBORO | TX |
| 2017-11-20 | 903-913-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | GRANDSALIN | TX |
| 2017-11-20 | 903-914-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CASH | TX |
| 2017-11-20 | 903-929-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WINDOM | TX |
| 2017-11-20 | 903-980-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BENWHEELER | TX |
| 2017-11-20 | 903-989-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TRENTON | TX |
| 2016-03-04 | 903-200-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | COLLINSVL | TX |
| 2016-03-04 | 903-294-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | SHERMAN | TX |
| 2015-02-26 | 903-294-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SHERMAN | TX |
| 2015-02-26 | 903-706-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PARIS | TX |
| 2013-04-08 | 903-200-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | COLLINSVL | 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.