NumberResearchThousands-blocks in 845-533
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 845-533 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 845 blocks
Most active assignees, all time — NPA 845
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-10-13 | 845-533-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SUFFERN | NY |
| 2007-07-24 | 845-533-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SUFFERN | NY |
| 2010-09-14 | 845-533-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | SUFFERN | NY |
| 2010-05-25 | 845-533-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | SUFFERN | NY |
| 2007-08-27 | 845-533-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | SUFFERN | NY |
| 2007-12-18 | 845-533-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SUFFERN | NY |
| 2011-06-08 | 845-533-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | SUFFERN | NY |
| 2009-10-01 | 845-533-7XXX | 7000–7999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | SUFFERN | NY |
| 2009-12-07 | 845-533-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | SUFFERN | NY |
| 2008-10-29 | 845-533-9XXX | 9000–9999 | Assigned | XCHANGE TELECOM CORP. - NY | 325B | SUFFERN | 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.