NumberResearchThousands-blocks in 910-557
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 910-557 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 910 blocks
Most active assignees, all time — NPA 910
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-10-24 | 910-557-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NC | 998E | HAMLET | NC |
| 2013-02-26 | 910-557-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HAMLET | NC |
| 2013-06-05 | 910-557-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NC | 998E | HAMLET | NC |
| 2004-05-20 | 910-557-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | HAMLET | NC |
| 2005-04-01 | 910-557-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | HAMLET | NC |
| 2006-09-18 | 910-557-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HAMLET | NC |
| 2015-04-08 | 910-557-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NC | 998E | HAMLET | NC |
| 2016-03-03 | 910-557-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NC | 638E | HAMLET | NC |
| 2016-03-03 | 910-557-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NC | 638E | HAMLET | NC |
| 2004-11-22 | 910-557-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NC | 3235 | HAMLET | 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.