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Autonomous System

AS56504

HostCircle B.V.

Announced IPs
1,792
CIDR prefixes
7
ASN
AS56504

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.

53/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 2 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS56504 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
38.83.202.0/24 AS174, AS56504 2026-07-18 11:37:44
154.51.14.0/24 AS174, AS56504 2026-07-17 19:22:38

Network profile

Source: PeeringDB →
Network type Network Services
Traffic level 5-10Tbps
Geographic scope Global
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS56504:AS-ALL

Present at 1 internet exchange: Frys-IX

Web3 footprint

AS56504 hosts 2 observed decentralized-network nodes across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
38.83.202.0/24 256
0.0%
HostCircle B.V. US
110.44.4.0/24 256
0.0%
HostCircle B.V. IN
154.51.14.0/24 256
0.0%
HostCircle B.V. US
178.237.57.0/24 256
93.0%
HostCircle B.V. NL
178.237.58.0/24 256
99.6%
HostCircle B.V. NL North Holland Amsterdam
185.61.136.0/24 256
0.0%
HostCircle B.V. UA
193.91.11.0/24 256
4.7%
HostCircle B.V. BG

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS56504 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
178.237.58.0/24 10,868 2026-07-18 11:26:57
38.83.202.0/24 9,428 2026-07-18 11:26:41
110.44.4.0/24 8,645 2026-07-18 11:26:57
193.91.11.0/24 7,027 2026-07-18 11:26:14
185.61.136.0/24 3,723 2026-07-18 10:52:27
154.51.14.0/24 3,537 2026-07-18 10:12:53
178.237.57.0/24 3,402 2026-07-18 10:52:27

Frequently Asked Questions

What is AS56504?

AS56504 is an Autonomous System Number assigned to HostCircle B.V.. 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 AS56504 announce?

AS56504 announces 1.8K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in The Netherlands.

Who operates AS56504?

AS56504 is operated by HostCircle B.V.. The organization is based in The Netherlands. You can view all IP ranges and related ASNs on the organization page.

What country is AS56504 registered in?

AS56504 is registered in The Netherlands. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:25:31 UTC
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