NumberResearchThousands-blocks in 575-268
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 575-268 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 575 blocks
Most active assignees, all time — NPA 575
New assignments by month
Sep 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-08-09 | 575-268-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NM | 123F | CLOVIS | NM |
| 2011-03-08 | 575-268-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | NM |
| 2011-08-25 | 575-268-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NM | 5470 | CLOVIS | NM |
| 2011-05-31 | 575-268-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NM | 123F | CLOVIS | NM |
| 2011-09-12 | 575-268-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA NM-LLC | 450C | CLOVIS | NM |
| 2015-06-08 | 575-268-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLOVIS | NM |
| 2010-02-17 | 575-268-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NM | 123F | CLOVIS | NM |
| 2011-09-30 | 575-268-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NM | 206F | CLOVIS | NM |
| 2012-08-24 | 575-268-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | CLOVIS | NM |
| 2010-01-06 | 575-268-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | 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.