NumberResearchThousands-blocks in 617-334
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 617-334 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-06-01 | 617-334-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SO BOSTON | MA |
| 2017-06-12 | 617-334-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SO BOSTON | MA |
| 2023-06-08 | 617-334-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | SO BOSTON | MA |
| 2006-02-15 | 617-334-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SO BOSTON | MA |
| 2006-02-15 | 617-334-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SO BOSTON | MA |
| 2010-12-03 | 617-334-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SO BOSTON | MA |
| 2008-02-08 | 617-334-6XXX | 6000–6999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | SO BOSTON | MA |
| 2007-03-23 | 617-334-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO BOSTON | MA |
| — | 617-334-8XXX | 8000–8999 | Reserved | RCN TELECOM SERVICES, INC. - MA | 7619 | SO BOSTON | MA |
| 2008-09-04 | 617-334-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | SO BOSTON | 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.