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Autonomous System

AS28725

CETIN a.s.

Announced IPs
134,400
CIDR prefixes
7
ASN
AS28725

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.

69/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Enterprise allocation +4
  • Trust score 69 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

About CETIN

CETIN a.s., is a Czech telecommunications company that is part of PPF Group, an international investment group formerly majority-owned by Czech billionaire Petr Kellner. The company was created as a result of the separation of O2 Czech Republic a.s.

Founded
2015
Headquarters
Prague
Industry
telecommunications
Parent
PPF Group
Employees
1,437

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 200-300Gbps
Geographic scope Regional
Traffic ratio Balanced
Peering policy Open
IRR record RIPE::AS-CETIN

Present at 7 internet exchanges: NIX.CZ: Public peering VLAN, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, SIX.SK, LINX LON1: Main, AMS-IX, DE-CIX Dusseldorf: DE-CIX Dusseldorf Peering LAN, Peering.cz

AS28725 — global IP footprint

Cities where AS28725 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 AS28725 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.218.92.0/23 17,235 2026-07-24 15:47:14
136.238.226.0/24 8,735 2026-07-24 16:13:39
80.78.150.0/24 6,577 2026-07-24 15:47:14
85.163.0.0/16 6,551 2026-07-24 15:47:14
85.162.0.0/15 6,527 2026-07-24 15:47:14
85.162.0.0/16 6,510 2026-07-24 15:47:14
194.147.12.0/22 6,439 2026-07-24 15:47:14
194.50.64.0/22 6,249 2026-07-24 15:47:14
212.96.180.0/24 4,649 2026-07-24 15:47:14
85.163.152.0/24 4 2026-06-18 10:03:52

Frequently Asked Questions

What is AS28725?

AS28725 is an Autonomous System Number assigned to CETIN a.s.. 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 AS28725 announce?

AS28725 announces 134.4K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in Czechia.

Who operates AS28725?

AS28725 is operated by CETIN a.s.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.

What country is AS28725 registered in?

AS28725 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-24 16:25:32 UTC
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