NumberResearchThousands-blocks in 217-407
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 217-407 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 217 blocks
Most active assignees, all time — NPA 217
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 |
|---|---|---|---|---|---|---|---|
| — | 217-407-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PITTSFIELD | IL |
| 2022-03-16 | 217-407-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PITTSFIELD | IL |
| 2025-02-28 | 217-407-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | PITTSFIELD | IL |
| 2013-02-01 | 217-407-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | PITTSFIELD | IL |
| — | 217-407-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PITTSFIELD | IL |
| — | 217-407-5XXX | 5000–5999 | Available | PITTSFIELD | IL | ||
| 2017-09-06 | 217-407-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | PITTSFIELD | IL |
| 2020-02-21 | 217-407-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | PITTSFIELD | IL |
| 2024-09-27 | 217-407-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PITTSFIELD | IL |
| 2025-01-13 | 217-407-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PITTSFIELD | 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.