NumberResearchThousands-blocks in 715-504
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 715-504 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 715 blocks
Most active assignees, all time — NPA 715
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-12-01 | 715-504-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | MARINETTE | WI |
| 2019-04-08 | 715-504-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WI | 225C | MARINETTE | WI |
| 2010-12-07 | 715-504-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MARINETTE | WI |
| 2015-11-17 | 715-504-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MARINETTE | WI |
| — | 715-504-4XXX | 4000–4999 | Available | MARINETTE | WI | ||
| 2018-07-03 | 715-504-5XXX | 5000–5999 | Assigned | INTEGRATED PATH COMMUNICATIONS, LLC - WI | 766H | MARINETTE | WI |
| 2018-09-24 | 715-504-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WI | 225C | MARINETTE | WI |
| 2010-03-22 | 715-504-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MARINETTE | WI |
| 2019-04-08 | 715-504-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WI | 225C | MARINETTE | WI |
| 2009-12-23 | 715-504-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MARINETTE | WI |
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.