NumberResearchThousands-blocks in 254-477
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 254-477 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 254 blocks
Most active assignees, all time — NPA 254
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 254-477-0XXX | 0000–0999 | Reserved | SOUTHWESTERN BELL | 9533 | BRECKENRDG | TX |
| 2023-12-20 | 254-477-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BRECKENRDG | TX |
| 2017-06-07 | 254-477-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | BRECKENRDG | TX |
| 2009-04-10 | 254-477-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BRECKENRDG | TX |
| 2010-02-11 | 254-477-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BRECKENRDG | TX |
| 2017-12-22 | 254-477-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BRECKENRDG | TX |
| 2013-08-21 | 254-477-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | BRECKENRDG | TX |
| 2017-11-20 | 254-477-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | BRECKENRDG | TX |
| 2013-03-25 | 254-477-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | BRECKENRDG | TX |
| 2013-03-25 | 254-477-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | BRECKENRDG | 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.