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Autonomous System

AS401566

Montviridian LLC

Announced IPs
256
CIDR prefixes
1
ASN
AS401566

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 100-1000Mbps
Geographic scope Not Disclosed
Traffic ratio Balanced
Peering policy Open
IRR record ARIN::AS401566:AS-ALL

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
23.131.236.0/24 256
0.0%
Montviridian LLC US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS401566 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
23.131.236.0/24 8,055 2026-07-31 05:15:53

Frequently Asked Questions

What is AS401566?

AS401566 is an Autonomous System Number assigned to Montviridian LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS401566 announce?

AS401566 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.

Who operates AS401566?

AS401566 is operated by Montviridian LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS401566 registered in?

AS401566 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-31 06:10:31 UTC
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