NumberResearchThousands-blocks in 240-915
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 240-915 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
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-07-27 | 240-915-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | NEW MARKET | MD |
| 2018-05-24 | 240-915-1XXX | 1000–1999 | Assigned | CORE COMMUNICATIONS, INC.- MD | 2593 | NEW MARKET | MD |
| 2017-02-07 | 240-915-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW MARKET | MD |
| 2018-05-24 | 240-915-3XXX | 3000–3999 | Assigned | CORE COMMUNICATIONS, INC.- MD | 2593 | NEW MARKET | MD |
| 2018-05-24 | 240-915-4XXX | 4000–4999 | Assigned | CORE COMMUNICATIONS, INC.- MD | 2593 | NEW MARKET | MD |
| 2021-02-12 | 240-915-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW MARKET | MD |
| 2019-09-23 | 240-915-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | NEW MARKET | MD |
| 2016-09-23 | 240-915-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NEW MARKET | MD |
| 2016-09-06 | 240-915-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | NEW MARKET | MD |
| — | 240-915-9XXX | 9000–9999 | Available | NEW MARKET | 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.