NumberResearchThousands-blocks in 708-251
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 708-251 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 708 blocks
Most active assignees, last 30 days — NPA 708
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 |
|---|---|---|---|---|---|---|---|
| 2005-03-21 | 708-251-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LANSING | IL |
| 2005-03-21 | 708-251-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LANSING | IL |
| 2002-01-10 | 708-251-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LANSING | IL |
| 2004-04-30 | 708-251-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | LANSING | IL |
| 2003-07-30 | 708-251-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | LANSING | IL |
| — | 708-251-5XXX | 5000–5999 | Reserved | COMCAST IP PHONE, LLC | 318J | LANSING | IL |
| 2004-09-20 | 708-251-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | LANSING | IL |
| 2025-10-02 | 708-251-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | LANSING | IL |
| 2007-02-12 | 708-251-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | LANSING | IL |
| 2026-09-03 | 708-251-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | LANSING | IL |
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.