NumberResearchThousands-blocks in 561-530
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 561-530 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-03-24 | 561-530-0XXX | 0000–0999 | Assigned | INTEGRATED PATH COMMUNICATIONS, LLC - FL | 010H | WPALMBEACH | FL |
| 2015-01-29 | 561-530-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | WPALMBEACH | FL |
| 2015-04-13 | 561-530-2XXX | 2000–2999 | Assigned | ONVOY, LLC - FL | 937C | WPALMBEACH | FL |
| 2015-03-18 | 561-530-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | WPALMBEACH | FL |
| 2015-03-18 | 561-530-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | WPALMBEACH | FL |
| 2015-05-22 | 561-530-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | WPALMBEACH | FL |
| 2015-05-22 | 561-530-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | WPALMBEACH | FL |
| 2015-06-04 | 561-530-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WPALMBEACH | FL |
| 2015-07-08 | 561-530-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WPALMBEACH | FL |
| 2015-02-17 | 561-530-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | WPALMBEACH | FL |
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.