NumberResearchThousands-blocks in 484-540
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 484-540 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, all time — NPA 484
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-11-21 | 484-540-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | PHPHSBZN14 | PA |
| 2013-03-19 | 484-540-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN14 | PA |
| 2017-05-03 | 484-540-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | PHPHSBZN14 | PA |
| 2012-05-04 | 484-540-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | PHPHSBZN14 | PA |
| 2014-06-20 | 484-540-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | PHPHSBZN14 | PA |
| 2010-02-01 | 484-540-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | PHPHSBZN14 | PA |
| 2009-04-15 | 484-540-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN14 | PA |
| 2008-01-22 | 484-540-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PHPHSBZN14 | PA |
| 2008-01-22 | 484-540-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | PHPHSBZN14 | PA |
| — | 484-540-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN14 | 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.