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Autonomous System

AS203938

Samuel Cosgrove

Announced IPs
2,560
CIDR prefixes
7
ASN
AS203938

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

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS203938 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
136.175.223.0/24 5,733 2026-07-13 06:46:19
136.175.222.0/24 5,524 2026-07-24 00:05:25
172.111.32.0/24 5,487 2026-07-24 00:05:25
163.123.194.0/24 5,469 2026-07-24 00:05:25
205.220.227.0/24 5,467 2026-07-24 00:05:25
163.123.192.0/24 5,462 2026-07-24 00:05:25
134.202.240.0/22 4,714 2026-07-13 06:46:19
205.178.176.0/24 2,380 2026-06-24 17:22:22

Frequently Asked Questions

What is AS203938?

AS203938 is an Autonomous System Number assigned to Samuel Cosgrove. 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 AS203938 announce?

AS203938 announces 2.6K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS203938?

AS203938 is operated by Samuel Cosgrove. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.

What country is AS203938 registered in?

AS203938 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-24 00:10:33 UTC
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