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Autonomous System

AS203596

CELYA SAS

Announced IPs
4,608
CIDR prefixes
9
ASN
AS203596

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 →
Network type Cable/DSL/ISP
Traffic level 1-5Gbps
Geographic scope Europe
Traffic ratio Balanced
Peering policy Open
IRR record AS-CELYA

Present at 3 internet exchanges: Equinix Paris: Equinix IX - PA Metro, Hopus, Ouest.Network

AS203596 — global IP footprint

Cities where AS203596 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS203596 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.122.100.0/24 24,045 2026-07-30 20:41:52
185.122.102.0/24 23,803 2026-07-30 20:41:52
185.122.103.0/24 22,688 2026-07-30 20:41:52
185.222.88.0/22 20,148 2026-07-30 20:41:52
185.222.89.0/24 20,124 2026-07-30 20:41:52
185.122.100.0/22 17,239 2026-07-30 20:41:52
193.109.0.0/24 17,206 2026-07-30 20:41:52
193.109.2.0/24 17,177 2026-07-30 20:41:52
193.109.1.0/24 17,177 2026-07-30 20:41:52
193.108.216.0/24 17,159 2026-07-30 20:41:52
193.109.3.0/24 17,153 2026-07-30 20:41:52
185.222.90.0/24 16,325 2026-07-30 20:41:52
185.222.91.0/24 16,292 2026-07-30 20:41:52
91.216.15.0/24 16,162 2026-07-30 20:41:51
91.213.223.0/24 12,361 2026-07-30 20:41:51
91.216.39.0/24 12,201 2026-07-30 20:41:51
185.14.178.0/24 12,124 2026-07-30 20:41:51
185.14.176.0/24 12,123 2026-07-30 20:41:51

Frequently Asked Questions

What is AS203596?

AS203596 is an Autonomous System Number assigned to CELYA SAS. 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 AS203596 announce?

AS203596 announces 4.6K IPv4 addresses distributed across 9 routed CIDR prefixes. The network is registered in France.

Who operates AS203596?

AS203596 is operated by CELYA SAS. The organization is based in France. You can view all IP ranges and related ASNs on the organization page.

What country is AS203596 registered in?

AS203596 is registered in France. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-30 20:40:31 UTC
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