NumberResearchThousands-blocks in 608-391
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 608-391 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 608 blocks
Most active assignees, all time — NPA 608
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 608-391-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BOSCOBEL | WI |
| — | 608-391-1XXX | 1000–1999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BOSCOBEL | WI |
| 2011-01-28 | 608-391-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BOSCOBEL | WI |
| 2012-09-07 | 608-391-3XXX | 3000–3999 | Assigned | MCC TELEPHONY OF THE MIDWEST, LLC - WI | 983F | BOSCOBEL | WI |
| 2020-07-29 | 608-391-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BOSCOBEL | WI |
| 2022-05-10 | 608-391-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BOSCOBEL | WI |
| 2023-12-11 | 608-391-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BOSCOBEL | WI |
| 2014-10-31 | 608-391-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BOSCOBEL | WI |
| — | 608-391-8XXX | 8000–8999 | Available | BOSCOBEL | WI | ||
| 2025-07-17 | 608-391-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOSCOBEL | 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.