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
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 |
|---|---|---|---|---|---|---|---|
| 2026-02-24 | 575-686-4XXX | 4000–4999 | Assigned | TULAROSA COMMUNICATIONS, INC. - NM | 470G | CAPITAN | NM |
| 2020-06-24 | 575-228-9XXX | 9000–9999 | Assigned | TULAROSA COMMUNICATIONS, INC. - NM | 470G | ALTO | NM |
| 2017-08-07 | 575-651-9XXX | 9000–9999 | Assigned | TULAROSA COMMUNICATIONS, INC. - NM | 470G | RUIDOSODWN | NM |
| 2017-06-07 | 575-454-5XXX | 5000–5999 | Assigned | TULAROSA COMMUNICATIONS, INC. - NM | 470G | RUIDOSO | 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.