NumberResearchThousands-blocks in 678-348
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 678-348 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-03-05 | 678-348-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | ATLANTA NW | GA |
| 2003-10-03 | 678-348-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2003-10-03 | 678-348-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2003-10-03 | 678-348-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2005-08-15 | 678-348-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
| — | 678-348-5XXX | 5000–5999 | Reserved | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
| 2010-06-04 | 678-348-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - GA | 983E | ATLANTA NW | GA |
| — | 678-348-7XXX | 7000–7999 | Reserved | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
| — | 678-348-8XXX | 8000–8999 | Reserved | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
| — | 678-348-9XXX | 9000–9999 | Reserved | LEVEL 3 TELECOM OF GEORGIA, LP - GA | 7490 | ATLANTA NW | GA |
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.