NumberResearchThousands-blocks in 315-533
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 315-533 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 315-533-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | ROME | NY |
| — | 315-533-1XXX | 1000–1999 | Reserved | PAETEC ITEL, LLC | 829J | ROME | NY |
| 2011-06-07 | 315-533-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | ROME | NY |
| 2012-09-25 | 315-533-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | ROME | NY |
| 2011-08-12 | 315-533-4XXX | 4000–4999 | Assigned | ONVOY, LLC- NY | 384C | ROME | NY |
| 2003-12-26 | 315-533-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROME | NY |
| 2005-09-14 | 315-533-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROME | NY |
| 2006-12-01 | 315-533-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ROME | NY |
| 2013-12-17 | 315-533-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ROME | NY |
| 2014-12-19 | 315-533-9XXX | 9000–9999 | Assigned | ONVOY, LLC- NY | 384C | ROME | NY |
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.