NumberResearchThousands-blocks in 540-744
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 540-744 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 540 blocks
Most active assignees, all time — NPA 540
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 |
|---|---|---|---|---|---|---|---|
| 2017-03-14 | 540-744-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | RADFORD | VA |
| 2015-12-30 | 540-744-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF VIRGINIA, LLC - VA | 275G | RADFORD | VA |
| 2016-08-18 | 540-744-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | RADFORD | VA |
| 2017-03-21 | 540-744-3XXX | 3000–3999 | Assigned | ONVOY, LLC - VA | 138E | RADFORD | VA |
| 2025-12-19 | 540-744-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | RADFORD | VA |
| 2020-12-14 | 540-744-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | RADFORD | VA |
| 2018-09-14 | 540-744-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | RADFORD | VA |
| 2023-07-14 | 540-744-7XXX | 7000–7999 | Assigned | ONVOY, LLC - VA | 138E | RADFORD | VA |
| 2023-07-14 | 540-744-8XXX | 8000–8999 | Assigned | ONVOY, LLC - VA | 138E | RADFORD | VA |
| 2024-02-07 | 540-744-9XXX | 9000–9999 | Assigned | ONVOY, LLC - VA | 138E | RADFORD | VA |
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.