NumberResearchThousands-blocks in 570-254
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 570-254 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 570 blocks
Most active assignees, all time — NPA 570
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-08-31 | 570-254-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | CHAPMAN LK | PA |
| 2009-03-12 | 570-254-1XXX | 1000–1999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | CHAPMAN LK | PA |
| 2016-08-31 | 570-254-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | CHAPMAN LK | PA |
| 2012-02-08 | 570-254-3XXX | 3000–3999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | CHAPMAN LK | PA |
| 2016-10-07 | 570-254-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | CHAPMAN LK | PA |
| 2016-05-12 | 570-254-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CHAPMAN LK | PA |
| — | 570-254-6XXX | 6000–6999 | Reserved | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | CHAPMAN LK | PA |
| 2015-12-23 | 570-254-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHAPMAN LK | PA |
| 2009-02-23 | 570-254-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | CHAPMAN LK | PA |
| — | 570-254-9XXX | 9000–9999 | Reserved | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | CHAPMAN LK | PA |
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.