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Autonomous System

AS53266

DFN Systems

Announced IPs
3,072
CIDR prefixes
2
ASN
AS53266

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 →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
74.116.128.0/21 2.0K
1.1%
DFN Systems US New Mexico Roswell
199.83.116.0/22 1.0K
0.6%
DFN Systems US New Mexico Roswell

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS53266 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
74.116.128.0/21 8,007 2026-07-24 18:03:44
199.83.116.0/22 6,440 2026-07-24 18:03:44

Frequently Asked Questions

What is AS53266?

AS53266 is an Autonomous System Number assigned to DFN Systems. 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 AS53266 announce?

AS53266 announces 3.1K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in United States.

Who operates AS53266?

AS53266 is operated by DFN Systems. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS53266 registered in?

AS53266 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: 2026-07-24 18:40:32 UTC
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