NumberResearchThousands-blocks in 315-599
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 315-599 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 315 blocks
Most active assignees, all time — NPA 315
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-01-11 | 315-599-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | OSCEOLA | NY |
| 2015-07-17 | 315-599-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | OSCEOLA | NY |
| 2016-03-15 | 315-599-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | OSCEOLA | NY |
| 2016-03-15 | 315-599-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | OSCEOLA | NY |
| 2018-05-10 | 315-599-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | OSCEOLA | NY |
| 2014-10-16 | 315-599-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OSCEOLA | NY |
| 2018-08-08 | 315-599-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | OSCEOLA | NY |
| — | 315-599-7XXX | 7000–7999 | Reserved | VERIZON NEW YORK, INC. | 9104 | OSCEOLA | NY |
| 2018-09-21 | 315-599-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | OSCEOLA | NY |
| 2012-09-25 | 315-599-9XXX | 9000–9999 | Assigned | ONVOY, LLC- NY | 384C | OSCEOLA | NY |
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.