NumberResearchThousands-blocks in 715-431
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 715-431 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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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 715-431-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | GRANTSBURG | WI |
| 2013-02-13 | 715-431-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | GRANTSBURG | WI |
| — | 715-431-2XXX | 2000–2999 | Available | GRANTSBURG | WI | ||
| — | 715-431-3XXX | 3000–3999 | Available | GRANTSBURG | WI | ||
| — | 715-431-4XXX | 4000–4999 | Available | GRANTSBURG | WI | ||
| — | 715-431-5XXX | 5000–5999 | Available | GRANTSBURG | WI | ||
| — | 715-431-6XXX | 6000–6999 | Available | GRANTSBURG | WI | ||
| — | 715-431-7XXX | 7000–7999 | Available | GRANTSBURG | WI | ||
| 2019-08-06 | 715-431-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | GRANTSBURG | WI |
| — | 715-431-9XXX | 9000–9999 | Available | GRANTSBURG | WI |
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.