NumberResearchThousands-blocks in 516-504
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 516-504 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, last 30 days — NPA 516
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 516-504-0XXX | 0000–0999 | Reserved | VERIZON NEW YORK, INC. | 9104 | NASSAUZN01 | NY |
| — | 516-504-1XXX | 1000–1999 | Reserved | VERIZON NEW YORK, INC. | 9104 | NASSAUZN01 | NY |
| — | 516-504-2XXX | 2000–2999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN01 | NY |
| 2004-08-09 | 516-504-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NASSAUZN01 | NY |
| 2026-09-17 | 516-504-4XXX | 4000–4999 | Assigned | CSC WIRELESS, LLC | 425J | NASSAUZN01 | NY |
| 2005-01-13 | 516-504-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NASSAUZN01 | NY |
| — | 516-504-6XXX | 6000–6999 | Reserved | VERIZON NEW YORK, INC. | 9104 | NASSAUZN01 | NY |
| — | 516-504-7XXX | 7000–7999 | Reserved | VERIZON NEW YORK, INC. | 9104 | NASSAUZN01 | NY |
| 2015-11-24 | 516-504-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NASSAUZN01 | NY |
| 2001-09-05 | 516-504-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | NASSAUZN01 | 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.