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Autonomous System

AS35125

Rostelecom

Announced IPs
7,680
CIDR prefixes
13
ASN
AS35125

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
  • Baseline (neutral) 65
  • Isp allocation +5
  • Trust score 70 / 100

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

About Rostelecom

Rostelecom is Russia's largest provider of digital services for a wide variety of consumers, households, private businesses, government and municipal authorities, and other telecom providers. Rostelecom interconnects all local public operators' networks into a single national network for long-distance service.

Founded
1993
Headquarters
Moscow
Industry
telecommunications
Employees
1,286

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
212.3.132.0/22 1.0K
3.2%
Rostelecom RU
212.3.136.0/22 1.0K
1.9%
Rostelecom RU
212.3.148.0/22 1.0K
3.8%
Rostelecom RU Smolensk Oblast Smolensk
212.3.152.0/22 1.0K
3.6%
Rostelecom RU
85.174.140.0/23 512
0.6%
Rostelecom RU
212.3.130.0/23 512
1.2%
Rostelecom RU Smolensk Oblast Smolensk
212.3.142.0/23 512
1.2%
Rostelecom RU
212.3.146.0/23 512
3.1%
Rostelecom RU
212.3.158.0/23 512
0.6%
Rostelecom RU
212.3.129.0/24 256
0.4%
Rostelecom RU
212.3.141.0/24 256
3.1%
Rostelecom RU
212.3.145.0/24 256
3.1%
Rostelecom RU
212.3.156.0/24 256
3.9%
Rostelecom RU

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS35125 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
85.174.140.0/23 6,148 2026-07-31 05:15:52
95.158.192.0/18 6,114 2026-07-31 05:15:52
212.3.128.0/19 6,024 2026-07-31 05:15:52
212.3.133.0/24 6,000 2026-07-31 05:15:51

Frequently Asked Questions

What is AS35125?

AS35125 is an Autonomous System Number assigned to Rostelecom. 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 AS35125 announce?

AS35125 announces 7.7K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in Russia.

Who operates AS35125?

AS35125 is operated by Rostelecom. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.

What country is AS35125 registered in?

AS35125 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-31 05:40:31 UTC
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