NumberResearchThousands-blocks in 678-257
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 678-257 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 678 blocks
Most active assignees, all time — NPA 678
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 |
|---|---|---|---|---|---|---|---|
| — | 678-257-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | BOWDON | GA |
| 2013-04-05 | 678-257-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF GEORGIA, LLC - GA | 909E | BOWDON | GA |
| 2013-04-05 | 678-257-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF GEORGIA, LLC - GA | 909E | BOWDON | GA |
| 2012-05-07 | 678-257-3XXX | 3000–3999 | Assigned | ONVOY, LLC - GA | 067D | BOWDON | GA |
| 2007-08-09 | 678-257-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | BOWDON | GA |
| 2005-11-04 | 678-257-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BOWDON | GA |
| 2009-02-10 | 678-257-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | BOWDON | GA |
| 2012-06-12 | 678-257-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | BOWDON | GA |
| 2008-08-15 | 678-257-8XXX | 8000–8999 | Assigned | DOVETEL COMMUNICATIONS, LLC - GA | 362B | BOWDON | GA |
| 2011-01-24 | 678-257-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BOWDON | GA |
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.