Skip to main content
Autonomous System

AS204666

Jiri Tlapak

Announced IPs
14,336
CIDR prefixes
16
ASN
AS204666

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 →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS204666 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
37.221.245.0/24 8,368 2026-07-29 00:39:07
37.221.241.0/24 7,064 2026-07-29 00:39:07
213.108.162.0/24 6,898 2026-07-29 00:39:07
37.221.249.0/24 6,122 2026-07-29 00:39:07
37.221.252.0/24 5,422 2026-07-29 00:39:07
5.59.102.0/23 4,754 2026-07-29 00:39:07
37.221.251.0/24 4,630 2026-07-29 00:39:07
37.221.250.0/24 4,521 2026-07-29 00:39:07
37.221.248.0/24 4,491 2026-07-29 00:39:07
45.153.195.0/24 4,459 2026-07-29 00:39:07
37.221.242.0/24 4,449 2026-07-29 00:39:07
37.221.247.0/24 4,434 2026-07-29 00:39:07
37.221.243.0/24 4,422 2026-07-29 00:39:07
45.153.192.0/24 4,235 2026-07-29 00:39:07
37.221.240.0/20 4,075 2026-07-29 00:39:07
185.64.222.0/24 3,952 2026-07-29 00:39:07
45.153.192.0/22 3,902 2026-07-29 00:39:07
185.87.140.0/22 3,872 2026-07-29 00:39:07
185.64.220.0/22 3,866 2026-07-29 00:39:07
185.188.103.0/24 3,856 2026-07-29 00:39:07
185.243.172.0/22 3,853 2026-07-29 00:39:07
185.97.24.0/22 3,832 2026-07-29 00:39:07
185.188.101.0/24 3,805 2026-07-29 00:39:07
213.108.162.0/23 3,801 2026-07-29 00:39:07
176.119.192.0/24 3,795 2026-07-29 00:39:07
185.230.172.0/22 3,794 2026-07-29 00:39:07
185.19.0.0/22 3,791 2026-07-29 00:39:07
85.255.88.0/22 3,780 2026-07-29 00:39:07
185.74.60.0/24 3,688 2026-07-29 00:39:07
91.224.90.0/23 3,682 2026-07-29 00:39:07
185.64.220.0/24 3,671 2026-07-29 00:39:07
45.153.194.0/24 3,668 2026-07-29 00:39:07
185.87.142.0/23 3,665 2026-07-29 00:39:07
185.97.25.0/24 3,655 2026-07-29 00:39:07
185.97.26.0/24 3,625 2026-07-29 00:39:07
185.97.24.0/24 3,610 2026-07-29 00:39:07
185.188.100.0/24 3,597 2026-07-29 00:39:07

Frequently Asked Questions

What is AS204666?

AS204666 is an Autonomous System Number assigned to Jiri Tlapak. 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 AS204666 announce?

AS204666 announces 14.3K IPv4 addresses distributed across 16 routed CIDR prefixes. The network is registered in Czechia.

Who operates AS204666?

AS204666 is operated by Jiri Tlapak. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.

What country is AS204666 registered in?

AS204666 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-29 00:55:30 UTC
Share