NumberResearchThousands-blocks in 240-266
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 240-266 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 240 blocks
Most active assignees, all time — NPA 240
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 240-266-0XXX | 0000–0999 | Reserved | PEERLESS NETWORK OF MARYLAND, LLC | 568G | WSNG236Z14 | MD |
| 2021-09-13 | 240-266-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNG236Z14 | MD |
| 2021-05-13 | 240-266-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WSNG236Z14 | MD |
| 2020-03-23 | 240-266-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | WSNG236Z14 | MD |
| 2021-08-11 | 240-266-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WSNG236Z14 | MD |
| 2021-08-26 | 240-266-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | WSNG236Z14 | MD |
| 2023-10-19 | 240-266-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNG236Z14 | MD |
| 2021-04-21 | 240-266-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WSNG236Z14 | MD |
| 2021-08-26 | 240-266-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | WSNG236Z14 | MD |
| 2020-03-31 | 240-266-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | WSNG236Z14 | MD |
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.