NumberResearchThousands-blocks in 504-814
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 504-814 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 504 blocks
Most active assignees, all time — NPA 504
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-11-18 | 504-814-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
| 2015-04-17 | 504-814-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
| 2017-05-12 | 504-814-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
| 2015-04-17 | 504-814-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
| 2011-09-14 | 504-814-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
| 2011-09-23 | 504-814-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VENICE | LA |
| 2013-04-15 | 504-814-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - LA | 3232 | VENICE | LA |
| 2016-03-07 | 504-814-7XXX | 7000–7999 | Assigned | ONVOY, LLC - LA | 749E | VENICE | LA |
| 2016-03-07 | 504-814-8XXX | 8000–8999 | Assigned | ONVOY, LLC - LA | 749E | VENICE | LA |
| 2014-01-23 | 504-814-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - LA | 153F | VENICE | LA |
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.