NumberResearchThousands-blocks in 617-863
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 617-863 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, all time — 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 |
|---|---|---|---|---|---|---|---|
| 2008-11-10 | 617-863-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SOMERVILLE | MA |
| — | 617-863-1XXX | 1000–1999 | Reserved | VERIZON NEW ENGLAND INC. | 9102 | SOMERVILLE | MA |
| 2014-12-03 | 617-863-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SOMERVILLE | MA |
| 2008-12-04 | 617-863-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOMERVILLE | MA |
| 2011-02-14 | 617-863-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | SOMERVILLE | MA |
| 2005-08-29 | 617-863-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SOMERVILLE | MA |
| 2010-01-21 | 617-863-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SOMERVILLE | MA |
| 2010-01-21 | 617-863-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SOMERVILLE | MA |
| 2014-12-03 | 617-863-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SOMERVILLE | MA |
| 2016-01-26 | 617-863-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | SOMERVILLE | 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.