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AS41745
FORTIS-AS Hosting services

AS41745 announces 51,712 IPv4 addresses across 126 routed ranges, registered in RU. Figures come from the public global routing table and are refreshed daily.

52K addressesIPv4 space announced
126Routed ranges
RURegistry country

Is AS41745 datacenter space?

Not according to the nine cloud and CDN providers whose published range lists we track. That is a statement about those specific lists, not proof the space is residential — plenty of hosting companies never publish machine-readable ranges, and this AS may well be one of them.

The reliable way to classify a specific address is to check it directly rather than to infer from the AS. The free lookup tool returns live tunnel and datacenter signals for any address.

What an AS number does and does not tell you

An autonomous system number identifies who announces a block of addresses to the internet's routing table. It is an organisational fact, and a durable one — useful for attributing traffic to a hosting company, a carrier, or a university.

It is not a risk signal. A residential ISP's AS carries the household traffic of millions of ordinary customers and, at the same time, whatever residential proxy exits have been installed on those customers' devices. A hosting AS carries scrapers and legitimate server-to-server integrations in the same ranges. Scoring an address on the reputation of its AS produces exactly the false positives that make fraud tooling untrustworthy.

Sentinel does not feed AS names or routing data into its risk score. Tunnel detection comes from live network intelligence, and the dch signal comes from provider-published ranges. This directory exists to answer "who announces this address," which is a different and genuinely useful question.

Announced IPv4 ranges

All 126 announced ranges.

Range startRange endAddresses
5.39.249.05.39.250.255512
5.144.176.05.144.176.255256
5.144.181.05.144.181.255256
5.178.109.05.178.109.255256
5.181.21.05.181.23.255768
5.183.253.05.183.253.255256
23.230.179.023.230.179.255256
31.169.124.031.169.127.2551,024
41.216.182.041.216.182.255256
45.10.164.045.10.166.255768
45.12.70.045.12.70.255256
45.12.254.045.12.254.255256
45.14.165.045.14.165.255256
45.14.245.045.14.247.255768
45.81.243.045.81.243.255256
45.88.67.045.88.67.255256
45.89.63.045.89.63.255256
45.95.2.045.95.2.255256
45.112.194.045.112.194.255256
45.132.185.045.132.185.255256
45.138.100.045.138.103.2551,024
45.140.147.045.140.147.255256
45.140.167.045.140.167.255256
45.144.28.045.144.29.255512
45.144.232.045.144.235.2551,024
45.148.125.045.148.125.255256
45.148.127.045.148.127.255256
45.150.67.045.150.67.255256
45.151.233.045.151.233.255256
45.155.54.045.155.55.255512
46.20.106.046.20.106.255256
46.21.80.046.21.83.2551,024
77.110.111.077.110.111.255256
83.171.224.083.171.227.2551,024
83.217.210.083.217.211.255512
83.219.243.083.219.243.255256
83.219.248.083.219.250.255768
84.21.172.084.21.172.255256
85.31.45.085.31.45.255256
85.209.132.085.209.132.255256
85.209.134.085.209.134.255256
87.121.217.087.121.217.255256
89.169.15.089.169.15.255256
91.92.46.091.92.46.255256
91.211.114.091.211.114.255256
92.118.169.092.118.170.255512
93.115.203.093.115.203.255256
93.123.30.093.123.30.255256
93.177.116.093.177.117.255512
94.125.100.094.125.101.255512
94.156.177.094.156.177.255256
94.156.236.094.156.236.255256
95.128.157.095.128.157.255256
95.215.8.095.215.8.255256
104.164.62.0104.164.62.255256
104.165.244.0104.165.244.255256
109.107.155.0109.107.155.255256
109.122.194.0109.122.195.255512
109.206.241.0109.206.241.255256
130.49.176.0130.49.179.2551,024
138.124.0.0138.124.0.255256
138.124.2.0138.124.5.2551,024
138.124.10.0138.124.10.255256
138.124.15.0138.124.16.255512
138.124.19.0138.124.20.255512
138.124.30.0138.124.31.255512
138.124.68.0138.124.75.2552,048
138.124.84.0138.124.88.2551,280
138.124.96.0138.124.96.255256
138.124.125.0138.124.125.255256
138.124.182.0138.124.182.255256
138.124.251.0138.124.251.255256
141.98.84.0141.98.87.2551,024
142.111.244.0142.111.244.255256
146.19.230.0146.19.230.255256
147.78.181.0147.78.181.255256
166.1.60.0166.1.60.255256
166.1.160.0166.1.160.255256
171.22.30.0171.22.30.255256
178.20.211.0178.20.211.255256
185.33.24.0185.33.24.255256
185.58.115.0185.58.115.255256
185.65.202.0185.65.202.255256
185.68.184.0185.68.185.255512
185.68.246.0185.68.247.255512
185.77.221.0185.77.221.255256
185.79.138.0185.79.139.255512
185.88.36.0185.88.37.255512
185.88.101.0185.88.101.255256
185.95.231.0185.95.231.255256
185.113.139.0185.113.139.255256
185.120.59.0185.120.59.255256
185.236.22.0185.236.23.255512
185.246.220.0185.246.220.255256
185.255.178.0185.255.179.255512
188.92.28.0188.92.28.255256
192.145.28.0192.145.31.2551,024
193.8.184.0193.8.184.255256
193.32.177.0193.32.179.255768
193.47.60.0193.47.60.255256

Check a specific address

The AS tells you who announces a range. Whether one address inside it is currently a tunnel is a live question, answered per address — for example 5.39.249.0, the first address in this AS's announced space. The free lookup tool takes any address, and the IP intelligence hub explains what each signal means.

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