NumberResearchThousands-blocks in 516-837
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 516-837 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 516 blocks
Most active assignees, all time — NPA 516
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-03-15 | 516-837-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2000-10-25 | 516-837-1XXX | 1000–1999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN03 | NY |
| 2004-05-11 | 516-837-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NASSAUZN03 | NY |
| 2002-05-24 | 516-837-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
| 2002-08-01 | 516-837-4XXX | 4000–4999 | Assigned | AT&T - LOCAL | 7421 | NASSAUZN03 | NY |
| 2022-10-14 | 516-837-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | NASSAUZN03 | NY |
| 2003-01-16 | 516-837-6XXX | 6000–6999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN03 | NY |
| 2001-09-19 | 516-837-7XXX | 7000–7999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN03 | NY |
| 2001-09-19 | 516-837-8XXX | 8000–8999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN03 | NY |
| 2003-12-26 | 516-837-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NASSAUZN03 | NY |
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.