NumberResearchThousands-blocks in 339-674
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 339-674 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 339 blocks
Most active assignees, all time — NPA 339
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-08-17 | 339-674-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MEDFORD | MA |
| 2011-05-31 | 339-674-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MEDFORD | MA |
| — | 339-674-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | MEDFORD | MA |
| — | 339-674-3XXX | 3000–3999 | Reserved | PAETEC ITEL, LLC | 829J | MEDFORD | MA |
| 2012-02-21 | 339-674-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | MEDFORD | MA |
| 2009-07-14 | 339-674-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MA | 316E | MEDFORD | MA |
| 2012-12-12 | 339-674-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | MEDFORD | MA |
| 2015-05-06 | 339-674-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MEDFORD | MA |
| 2012-04-02 | 339-674-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | MEDFORD | MA |
| 2001-06-14 | 339-674-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | MEDFORD | 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.