NumberResearchThousands-blocks in 240-870
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 240-870 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
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-01-05 | 240-870-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | MIDDLETOWN | MD |
| 2017-07-27 | 240-870-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | MIDDLETOWN | MD |
| 2017-04-20 | 240-870-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | MIDDLETOWN | MD |
| 2024-03-07 | 240-870-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | MIDDLETOWN | MD |
| 2023-10-17 | 240-870-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MIDDLETOWN | MD |
| — | 240-870-5XXX | 5000–5999 | Available | MIDDLETOWN | MD | ||
| 2018-08-22 | 240-870-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | MIDDLETOWN | MD |
| 2016-09-22 | 240-870-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MIDDLETOWN | MD |
| 2016-09-06 | 240-870-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | MIDDLETOWN | MD |
| 2016-09-06 | 240-870-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | MIDDLETOWN | 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.