NumberResearchThousands-blocks in 484-255
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 484-255 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 484 blocks
Most active assignees, last 30 days — NPA 484
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-08-15 | 484-255-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | CENTER PT | PA |
| — | 484-255-1XXX | 1000–1999 | Reserved | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | CENTER PT | PA |
| 2004-03-23 | 484-255-2XXX | 2000–2999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | CENTER PT | PA |
| 2012-09-07 | 484-255-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | CENTER PT | PA |
| 2016-03-02 | 484-255-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | CENTER PT | PA |
| 2018-05-16 | 484-255-5XXX | 5000–5999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | CENTER PT | PA |
| 2018-05-16 | 484-255-6XXX | 6000–6999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | CENTER PT | PA |
| 2014-05-22 | 484-255-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CENTER PT | PA |
| 2016-03-02 | 484-255-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | CENTER PT | PA |
| 2026-09-17 | 484-255-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | CENTER PT | 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.