NumberResearchThousands-blocks in 678-509
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 678-509 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 678-509-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | CONYERS | GA |
| 2005-11-28 | 678-509-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | CONYERS | GA |
| 2010-06-04 | 678-509-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | CONYERS | GA |
| 2011-04-06 | 678-509-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | CONYERS | GA |
| 2008-12-11 | 678-509-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CONYERS | GA |
| 2011-07-01 | 678-509-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | CONYERS | GA |
| 2015-08-31 | 678-509-6XXX | 6000–6999 | Assigned | ONVOY, LLC - GA | 067D | CONYERS | GA |
| 2014-01-15 | 678-509-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | CONYERS | GA |
| 2004-11-18 | 678-509-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | CONYERS | GA |
| — | 678-509-9XXX | 9000–9999 | Reserved | PAETEC ITEL, LLC | 829J | CONYERS | 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.