NumberResearchThousands-blocks in 856-556
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 856-556 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-11-05 | 856-556-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | PITMAN | NJ |
| 2013-04-02 | 856-556-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | PITMAN | NJ |
| 2025-09-22 | 856-556-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PITMAN | NJ |
| 2014-04-30 | 856-556-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | PITMAN | NJ |
| 2008-09-03 | 856-556-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - NJ | 835E | PITMAN | NJ |
| 2018-05-01 | 856-556-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | PITMAN | NJ |
| 2015-05-18 | 856-556-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | PITMAN | NJ |
| 2019-04-01 | 856-556-7XXX | 7000–7999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | PITMAN | NJ |
| 2013-04-02 | 856-556-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | PITMAN | NJ |
| 2018-06-28 | 856-556-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | PITMAN | 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.