NumberResearchThousands-blocks in 561-678
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 561-678 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 561 blocks
Most active assignees, all time — NPA 561
New assignments by month
Sep 2026
Aug 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-08-09 | 561-678-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF FLORIDA, LLC - FL | 902E | BOYNTONBCH | FL |
| 2019-09-12 | 561-678-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | BOYNTONBCH | FL |
| 2019-08-05 | 561-678-2XXX | 2000–2999 | Assigned | ONVOY, LLC - FL | 937C | BOYNTONBCH | FL |
| 2019-08-05 | 561-678-3XXX | 3000–3999 | Assigned | ONVOY, LLC - FL | 937C | BOYNTONBCH | FL |
| 2019-08-05 | 561-678-4XXX | 4000–4999 | Assigned | ONVOY, LLC - FL | 937C | BOYNTONBCH | FL |
| 2019-08-05 | 561-678-5XXX | 5000–5999 | Assigned | ONVOY, LLC - FL | 937C | BOYNTONBCH | FL |
| 2020-04-28 | 561-678-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOYNTONBCH | FL |
| 2020-03-30 | 561-678-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | BOYNTONBCH | FL |
| 2019-06-04 | 561-678-8XXX | 8000–8999 | Assigned | FRACTEL, LLC | 965H | BOYNTONBCH | FL |
| 2019-06-04 | 561-678-9XXX | 9000–9999 | Assigned | FRACTEL, LLC | 965H | BOYNTONBCH | FL |
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.