NumberResearchThousands-blocks in 252-404
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 252-404 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 252 blocks
Most active assignees, all time — NPA 252
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-12-10 | 252-404-0XXX | 0000–0999 | Assigned | MCC TELEPHONY LLC | 593K | HERTFORD | NC |
| 2012-06-13 | 252-404-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NC | 998E | HERTFORD | NC |
| 2015-04-03 | 252-404-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NC | 998E | HERTFORD | NC |
| 2013-06-28 | 252-404-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | HERTFORD | NC |
| 2021-02-09 | 252-404-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NC | 638E | HERTFORD | NC |
| 2011-02-04 | 252-404-5XXX | 5000–5999 | Assigned | BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC | 0470 | HERTFORD | NC |
| 2017-07-18 | 252-404-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | HERTFORD | NC |
| 2013-10-08 | 252-404-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HERTFORD | NC |
| 2020-03-05 | 252-404-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NC | 638E | HERTFORD | NC |
| 2013-12-13 | 252-404-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NC | 3235 | HERTFORD | NC |
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.