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AS25540
ALPHALINK-AS

AS25540 announces 120,576 IPv4 addresses across 69 routed ranges, registered in FR. Figures come from the public global routing table and are refreshed daily.

121K addressesIPv4 space announced
69Routed ranges
FRRegistry country

Is AS25540 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 69 announced ranges.

Range startRange endAddresses
37.122.200.037.122.207.2552,048
45.81.212.045.81.215.2551,024
45.92.200.045.92.203.2551,024
46.254.224.046.254.231.2552,048
77.81.49.077.81.49.255256
79.141.0.079.141.15.2554,096
83.167.128.083.167.159.2558,192
83.172.137.083.172.137.255256
83.172.142.083.172.143.255512
83.172.149.083.172.149.255256
83.172.152.083.172.152.255256
83.172.154.083.172.158.2551,280
83.172.166.083.172.168.255768
83.172.170.083.172.171.255512
83.172.184.083.172.185.255512
83.172.187.083.172.187.255256
83.172.190.083.172.191.255512
89.37.107.089.37.107.255256
91.220.116.091.220.116.255256
91.226.18.091.226.19.255512
93.114.176.093.114.179.2551,024
93.188.144.093.188.151.2552,048
94.177.28.094.177.28.255256
94.177.144.094.177.144.255256
95.140.0.095.140.15.2554,096
95.170.8.095.170.11.2551,024
109.239.114.0109.239.115.255512
109.239.124.0109.239.124.255256
130.93.0.0130.93.179.25546,080
141.101.48.0141.101.55.2552,048
159.100.36.0159.100.37.255512
161.104.80.0161.104.87.2552,048
171.33.152.0171.33.159.2552,048
178.22.176.0178.22.183.2552,048
178.251.80.0178.251.87.2552,048
185.3.168.0185.3.169.255512
185.4.20.0185.4.23.2551,024
185.9.248.0185.9.251.2551,024
185.12.0.0185.12.3.2551,024
185.13.214.0185.13.215.255512
185.14.120.0185.14.123.2551,024
185.23.164.0185.23.167.2551,024
185.26.88.0185.26.91.2551,024
185.31.0.0185.31.2.255768
185.33.12.0185.33.12.255256
185.37.28.0185.37.28.255256
185.52.84.0185.52.87.2551,024
185.85.233.0185.85.233.255256
185.85.235.0185.85.235.255256
185.120.176.0185.120.179.2551,024
185.122.160.0185.122.163.2551,024
185.126.244.0185.126.247.2551,024
185.130.116.0185.130.119.2551,024
185.133.128.0185.133.131.2551,024
185.137.72.0185.137.75.2551,024
185.140.70.0185.140.70.255256
185.142.188.0185.142.191.2551,024
185.153.172.0185.153.175.2551,024
185.192.151.0185.192.151.255256
185.203.140.0185.203.140.255256
185.232.200.0185.232.203.2551,024
185.240.176.0185.240.177.255512
185.247.32.0185.247.33.255512
193.84.89.0193.84.89.255256
195.68.224.0195.68.227.2551,024
206.124.104.0206.124.111.2552,048
217.15.80.0217.15.95.2554,096
217.147.194.0217.147.195.255512
217.147.197.0217.147.198.255512

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 37.122.200.0, 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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