NumberResearchRecent thousands-block assignments
0 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, all time — NPA 575
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-05-02 | 575-240-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | TAOS | NM |
| 2022-05-02 | 575-243-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | ARTESIA | NM |
| 2022-05-02 | 575-246-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROSWELL | NM |
| 2022-05-02 | 575-248-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HATCH | NM |
| 2022-05-02 | 575-271-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | CLOVIS | NM |
| 2022-05-02 | 575-280-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | QUESTA | NM |
| 2022-05-02 | 575-283-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ANTHONY | NM |
| 2022-05-02 | 575-284-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SILVERCITY | NM |
| 2022-05-02 | 575-293-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PENASCO | NM |
| 2022-05-02 | 575-295-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ALAMOGORDO | NM |
| 2022-05-02 | 575-299-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | DEMING | NM |
| 2022-05-02 | 575-320-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PORTALES | NM |
| 2022-05-02 | 575-334-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CHAPARRAL | NM |
| 2022-05-02 | 575-345-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CANNON AFB | NM |
| 2022-05-02 | 575-426-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SPRINGER | NM |
| 2022-05-02 | 575-463-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LAS CRUCES | NM |
| 2022-05-02 | 575-467-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ANGEL FIRE | NM |
| 2022-05-02 | 575-599-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | RED RIVER | NM |
| 2022-05-02 | 575-733-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | RATON | NM |
| 2022-05-02 | 575-735-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CIMARRON | NM |
| 2022-05-02 | 575-757-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SOCORRO | NM |
| 2022-05-02 | 575-788-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BAYARD | NM |
| 2022-05-02 | 575-832-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TUCUMCARI | NM |
| 2022-05-02 | 575-874-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SNA TERESA | NM |
| 2022-05-02 | 575-966-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LA MESA | NM |
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.