NumberResearchThousands-blocks in 856-341
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 856-341 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-11-03 | 856-341-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | WILLIAMSTN | NJ |
| 2022-02-17 | 856-341-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WILLIAMSTN | NJ |
| 2013-02-07 | 856-341-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WILLIAMSTN | NJ |
| 2004-11-03 | 856-341-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | WILLIAMSTN | NJ |
| 2006-07-11 | 856-341-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | WILLIAMSTN | NJ |
| 2014-06-23 | 856-341-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | WILLIAMSTN | NJ |
| 2004-11-03 | 856-341-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | WILLIAMSTN | NJ |
| 2016-03-30 | 856-341-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | WILLIAMSTN | NJ |
| 2009-07-09 | 856-341-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WILLIAMSTN | NJ |
| 2015-07-15 | 856-341-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | WILLIAMSTN | NJ |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.