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AS397423
TIER-NET

AS397423 announces 91,648 IPv4 addresses across 217 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

92K addressesIPv4 space announced
217Routed ranges
USRegistry country

Is AS397423 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

First 100 of 217 ranges.

Range startRange endAddresses
8.39.234.08.39.235.255512
23.144.108.023.144.108.255256
23.151.232.023.151.232.255256
23.173.152.023.173.152.255256
31.56.140.031.56.140.255256
31.56.147.031.56.147.255256
31.57.78.031.57.81.2551,024
31.57.85.031.57.87.255768
31.57.203.031.57.203.255256
31.58.10.031.58.10.255256
31.58.16.031.58.16.255256
31.58.19.031.58.21.255768
31.58.26.031.58.26.255256
31.58.29.031.58.30.255512
31.58.167.031.58.167.255256
31.58.212.031.58.212.255256
31.59.13.031.59.13.255256
31.59.18.031.59.18.255256
31.59.24.031.59.24.255256
38.18.228.038.18.231.2551,024
38.55.73.038.55.73.255256
38.55.75.038.55.75.255256
38.91.46.038.91.46.255256
38.92.40.038.92.41.255512
38.92.47.038.92.50.2551,024
38.92.60.038.92.60.255256
38.134.114.038.134.114.255256
38.141.169.038.141.169.255256
38.196.219.038.196.219.255256
38.255.11.038.255.11.255256
40.27.34.040.27.34.255256
45.13.58.045.13.58.255256
45.42.144.045.42.147.2551,024
45.43.2.045.43.3.255512
45.43.10.045.43.11.255512
45.43.14.045.43.15.255512
45.43.18.045.43.19.255512
45.43.27.045.43.27.255256
45.59.160.045.59.163.2551,024
45.157.210.045.157.210.255256
45.194.28.045.194.28.255256
45.199.189.045.199.189.255256
46.37.100.046.37.100.255256
46.37.119.046.37.119.255256
50.114.164.050.114.164.255256
62.122.185.062.122.185.255256
64.69.99.064.69.99.255256
64.83.65.064.83.65.255256
64.93.32.064.93.35.2551,024
64.204.16.064.204.16.255256
64.204.32.064.204.32.255256
64.204.143.064.204.143.255256
64.204.220.064.204.220.255256
64.205.220.064.205.223.2551,024
64.253.94.064.253.94.255256
66.11.124.066.11.124.255256
66.11.126.066.11.126.255256
66.235.168.066.235.169.255512
66.235.172.066.235.175.2551,024
68.233.34.068.233.35.255512
68.233.38.068.233.38.255256
69.12.25.069.12.25.255256
69.42.221.069.42.221.255256
69.87.191.069.87.191.255256
72.14.135.072.14.135.255256
78.142.218.078.142.218.255256
81.22.137.081.22.137.255256
82.22.204.082.22.204.255256
82.24.82.082.24.82.255256
82.24.200.082.24.200.255256
82.25.23.082.25.23.255256
82.25.28.082.25.29.255512
82.26.200.082.26.200.255256
82.41.60.082.41.63.2551,024
82.41.76.082.41.79.2551,024
82.41.84.082.41.87.2551,024
82.41.92.082.41.95.2551,024
83.147.16.083.147.16.255256
85.237.203.085.237.203.255256
89.149.14.089.149.14.255256
89.149.16.089.149.16.255256
89.149.18.089.149.18.255256
89.149.22.089.149.22.255256
89.149.24.089.149.26.255768
89.149.37.089.149.41.2551,280
91.92.195.091.92.195.255256
102.129.148.0102.129.148.255256
102.129.150.0102.129.150.255256
102.129.248.0102.129.248.255256
102.165.4.0102.165.4.255256
102.165.13.0102.165.14.255512
104.129.244.0104.129.244.255256
104.192.101.0104.192.101.255256
104.234.66.0104.234.66.255256
104.234.99.0104.234.99.255256
104.234.195.0104.234.195.255256
104.234.217.0104.234.217.255256
104.245.244.0104.245.244.255256
104.245.246.0104.245.247.255512
104.249.25.0104.249.25.255256

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 8.39.234.0, 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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