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Autonomous System

AS204128

AT Telecom llc

Announced IPs
512
CIDR prefixes
2
ASN
AS204128

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.

70/100
Moderate
How this score is built

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

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
5.100.247.0/24 256
0.0%
AT Telecom llc RU
109.248.140.0/24 256
5.1%
AT Telecom llc CZ

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS204128 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
109.248.140.0/24 46,379 2026-07-28 13:53:02
5.100.247.0/24 43,277 2026-07-28 13:59:32

Frequently Asked Questions

What is AS204128?

AS204128 is an Autonomous System Number assigned to AT Telecom llc. 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 AS204128 announce?

AS204128 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Russia.

Who operates AS204128?

AS204128 is operated by AT Telecom llc. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.

What country is AS204128 registered in?

AS204128 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-28 13:55:33 UTC
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