NumberResearchThousands-blocks in 856-391
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 856-391 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 856 blocks
Most active assignees, all time — NPA 856
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 |
|---|---|---|---|---|---|---|---|
| 2015-09-14 | 856-391-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | BRIDGETON | NJ |
| — | 856-391-1XXX | 1000–1999 | Reserved | PAETEC ITEL, LLC | 829J | BRIDGETON | NJ |
| 2016-01-26 | 856-391-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | BRIDGETON | NJ |
| — | 856-391-3XXX | 3000–3999 | Reserved | PAETEC ITEL, LLC | 829J | BRIDGETON | NJ |
| 2022-05-19 | 856-391-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | BRIDGETON | NJ |
| 2007-08-01 | 856-391-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | BRIDGETON | NJ |
| — | 856-391-6XXX | 6000–6999 | Reserved | PAETEC ITEL, LLC | 829J | BRIDGETON | NJ |
| — | 856-391-7XXX | 7000–7999 | Reserved | PAETEC ITEL, LLC | 829J | BRIDGETON | NJ |
| 2017-04-12 | 856-391-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BRIDGETON | NJ |
| 2011-06-06 | 856-391-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | BRIDGETON | NJ |
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.