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Autonomous System

AS203961

CentralNic Ltd

Announced IPs
256
CIDR prefixes
1
ASN
AS203961

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 →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
185.24.67.0/24 256
94.1%
CentralNic Ltd GB

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS203961 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.24.67.0/24 6,019 2026-07-24 01:01:45

Frequently Asked Questions

What is AS203961?

AS203961 is an Autonomous System Number assigned to CentralNic Ltd. 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 AS203961 announce?

AS203961 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS203961?

AS203961 is operated by CentralNic Ltd. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.

What country is AS203961 registered in?

AS203961 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 01:55:31 UTC
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