AS204509
Seine Et Yvelines Numerique
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.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 193.239.12.0/22 | 1.0K |
0.0%
|
Seine Et Yvelines Numerique | FR | Île-de-France | La Celle-Saint-Cloud |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS204509 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 193.239.12.0/22 | 8,487 | 2026-07-31 01:47:25 |
Frequently Asked Questions
What is AS204509?
AS204509 is an Autonomous System Number assigned to Seine Et Yvelines Numerique. 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 AS204509 announce?
AS204509 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in France.
Who operates AS204509?
AS204509 is operated by Seine Et Yvelines Numerique. The organization is based in France. You can view all IP ranges and related ASNs on the organization page.
What country is AS204509 registered in?
AS204509 is registered in France. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
