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Autonomous System

AS203560

regfish GmbH

Announced IPs
1,280
CIDR prefixes
3
ASN
AS203560

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
178.21.144.0/23 512
0.8%
regfish GmbH DE
185.8.168.0/23 512
0.8%
regfish GmbH DE
178.21.146.0/24 256
0.8%
regfish GmbH DE

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS203560 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
178.21.144.0/24 9,551 2026-07-18 10:54:40
178.21.146.0/24 9,546 2026-07-18 10:54:40
185.8.168.0/24 8,188 2026-07-18 10:52:51
178.21.145.0/24 5,280 2026-07-18 10:55:44
185.8.169.0/24 3,732 2026-07-18 10:52:30
185.8.170.0/24 733 2026-07-18 10:53:02

Frequently Asked Questions

What is AS203560?

AS203560 is an Autonomous System Number assigned to regfish GmbH. 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 AS203560 announce?

AS203560 announces 1.3K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Germany.

Who operates AS203560?

AS203560 is operated by regfish GmbH. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.

What country is AS203560 registered in?

AS203560 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:40:32 UTC
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