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Autonomous System

AS402551

Piedmont

Announced IPs
256
CIDR prefixes
1
ASN
AS402551

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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
199.104.21.0/24 256
0.0%
Piedmont US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS402551 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
199.104.21.0/24 4,731 2026-07-23 16:50:48

Frequently Asked Questions

What is AS402551?

AS402551 is an Autonomous System Number assigned to Piedmont. 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 AS402551 announce?

AS402551 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.

Who operates AS402551?

AS402551 is operated by Piedmont. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS402551 registered in?

AS402551 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: 2026-07-23 16:55:32 UTC
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