NumberResearchThousands-blocks in 540-274
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 540-274 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 |
|---|---|---|---|---|---|---|---|
| 2017-04-17 | 540-274-0XXX | 0000–0999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2018-01-12 | 540-274-1XXX | 1000–1999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2018-05-24 | 540-274-2XXX | 2000–2999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2019-04-24 | 540-274-3XXX | 3000–3999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2020-04-02 | 540-274-4XXX | 4000–4999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2018-07-02 | 540-274-5XXX | 5000–5999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2019-06-27 | 540-274-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | PULASKI | VA |
| 2019-05-14 | 540-274-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | PULASKI | VA |
| 2018-08-16 | 540-274-8XXX | 8000–8999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
| 2018-08-16 | 540-274-9XXX | 9000–9999 | Assigned | ONVOY, LLC - VA | 138E | PULASKI | VA |
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.