NumberResearchThousands-blocks in 617-609
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 617-609 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 617 blocks
Most active assignees, last 30 days — NPA 617
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 |
|---|---|---|---|---|---|---|---|
| 2024-01-31 | 617-609-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | MILTON | MA |
| 2024-01-31 | 617-609-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | MILTON | MA |
| 2024-11-08 | 617-609-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MILTON | MA |
| 2024-11-08 | 617-609-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MILTON | MA |
| 2024-11-08 | 617-609-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MILTON | MA |
| 2026-09-02 | 617-609-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MILTON | MA |
| — | 617-609-6XXX | 6000–6999 | Available | MILTON | MA | ||
| 2026-08-20 | 617-609-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MILTON | MA |
| 2024-01-31 | 617-609-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | MILTON | MA |
| 2024-01-05 | 617-609-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MILTON | MA |
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.