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Autonomous System

AS43404

Fastnet LLC

Announced IPs
10,240
CIDR prefixes
2
ASN
AS43404

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 →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 10-20Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-UCANET

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
89.23.32.0/19 8.2K
99.0%
Fastnet LLC RU Moscow Moscow
77.87.200.0/21 2.0K
99.2%
Fastnet LLC RU Moscow Moscow

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS43404 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
89.23.32.0/19 21,186 2026-07-31 07:06:20
77.87.200.0/21 6,483 2026-07-31 07:06:17

Frequently Asked Questions

What is AS43404?

AS43404 is an Autonomous System Number assigned to Fastnet 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 AS43404 announce?

AS43404 announces 10.2K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Russia.

Who operates AS43404?

AS43404 is operated by Fastnet LLC. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.

What country is AS43404 registered in?

AS43404 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 07:25:30 UTC
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