NumberResearchRecent thousands-block assignments
9 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 903
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 |
|---|---|---|---|---|---|---|---|
| 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 |
| 2017-11-13 | 903-907-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BUFFALO | TX |
| 2017-11-07 | 903-904-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ATHENS | TX |
| 2017-10-12 | 903-417-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW BOSTON | TX |
| 2017-10-12 | 903-417-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW BOSTON | TX |
| 2017-10-12 | 903-417-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW BOSTON | TX |
| 2017-09-20 | 903-437-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BROWNSBORO | TX |
| 2017-09-18 | 903-744-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SHERMAN | TX |
| 2017-09-15 | 903-300-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COOPER | TX |
| 2017-09-13 | 903-563-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MTPLEASANT | TX |
| 2017-09-13 | 903-717-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MTPLEASANT | TX |
| 2017-08-31 | 903-420-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | EMHOUSE | TX |
| 2017-08-15 | 903-423-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENVILLE | TX |
| 2017-08-11 | 903-492-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | QUITMAN | TX |
| 2017-08-10 | 903-602-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CORSICANA | TX |
| 2017-07-19 | 903-336-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TEXARKANA | TX |
| 2017-07-03 | 903-419-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | POTTSBORO | TX |
| 2017-06-07 | 903-287-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | CANTON | TX |
| 2017-06-07 | 903-304-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | BONHAM | TX |
| 2017-05-31 | 903-294-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | SHERMAN | TX |
| 2017-05-31 | 903-303-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | GREENVILLE | TX |
| 2017-05-31 | 903-415-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DENISON | TX |
| 2017-05-24 | 903-296-8XXX | 8000–8999 | Assigned | ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX | 3196 | HUGHES SPG | TX |
| 2017-05-24 | 903-320-8XXX | 8000–8999 | Assigned | ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX | 3196 | LONE STAR | TX |
| 2017-05-24 | 903-417-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | NEW BOSTON | TX |
| 2017-05-16 | 903-859-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | ARP | TX |
| 2017-03-07 | 903-339-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSONVL | TX |
| 2017-03-07 | 903-415-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DENISON | TX |
| 2017-03-07 | 903-721-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSONVL | TX |
| 2017-03-07 | 903-904-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ATHENS | TX |
| 2017-02-23 | 903-251-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | MURCHISON | TX |
| 2017-02-22 | 903-523-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | GORDONVL | TX |
| 2017-02-22 | 903-961-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ECTOR | 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.