NumberResearchThousands-blocks in 409-359
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 409-359 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 409 blocks
Most active assignees, all time — NPA 409
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 409-359-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | TXSCYMARQU | TX |
| 2015-05-19 | 409-359-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | TXSCYMARQU | TX |
| 2015-11-25 | 409-359-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | TXSCYMARQU | TX |
| 2011-01-07 | 409-359-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TXSCYMARQU | TX |
| 2005-08-22 | 409-359-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TXSCYMARQU | TX |
| 2005-08-22 | 409-359-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TXSCYMARQU | TX |
| 2022-03-21 | 409-359-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | TXSCYMARQU | TX |
| 2014-12-02 | 409-359-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | TXSCYMARQU | TX |
| 2015-11-25 | 409-359-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | TXSCYMARQU | TX |
| 2016-03-02 | 409-359-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | TXSCYMARQU | 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.