NumberResearchThousands-blocks in 409-228
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 409-228 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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-04-17 | 409-228-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2019-04-10 | 409-228-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2019-04-10 | 409-228-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2020-07-31 | 409-228-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2020-07-31 | 409-228-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2021-02-15 | 409-228-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2021-02-23 | 409-228-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | HEMPHILL | TX |
| 2021-02-15 | 409-228-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | HEMPHILL | TX |
| 2023-08-16 | 409-228-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | HEMPHILL | TX |
| 2015-07-01 | 409-228-9XXX | 9000–9999 | Assigned | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 1181 | HEMPHILL | 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.