NumberResearchThousands-blocks in 678-635
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 678-635 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-01-25 | 678-635-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | MONROE | GA |
| 2026-02-18 | 678-635-1XXX | 1000–1999 | Assigned | ONVOY, LLC - GA | 067D | MONROE | GA |
| 2016-09-21 | 678-635-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MONROE | GA |
| 2010-02-05 | 678-635-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | MONROE | GA |
| 2015-03-31 | 678-635-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - GA | 8392 | MONROE | GA |
| 2006-10-16 | 678-635-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | MONROE | GA |
| 2017-04-21 | 678-635-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | MONROE | GA |
| 2011-12-02 | 678-635-7XXX | 7000–7999 | Assigned | BROADRIVER COMMUNICATION CORPORATION - GA | 0173 | MONROE | GA |
| 2008-05-16 | 678-635-8XXX | 8000–8999 | Assigned | BROADRIVER COMMUNICATION CORPORATION - GA | 0173 | MONROE | GA |
| 2018-09-05 | 678-635-9XXX | 9000–9999 | Assigned | ONVOY, LLC - GA | 067D | MONROE | 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.