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AS31133
MF-MGSM-AS PJSC MegaFon

AS31133 announces 339,968 IPv4 addresses across 139 routed ranges, registered in RU. Figures come from the public global routing table and are refreshed daily.

340K addressesIPv4 space announced
139Routed ranges
RURegistry country

Is AS31133 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 139 announced ranges.

Range startRange endAddresses
31.173.98.031.173.98.255256
31.173.128.031.173.131.2551,024
31.173.136.031.173.142.2551,792
31.173.144.031.173.175.2558,192
31.173.177.031.173.178.255512
31.173.180.031.173.191.2553,072
31.173.224.031.173.224.255256
31.173.227.031.173.227.255256
31.173.234.031.173.234.255256
31.173.240.031.173.241.255512
37.28.185.037.28.185.255256
37.28.187.037.28.189.255768
37.29.0.037.29.12.2553,328
37.29.13.037.29.21.2552,304
37.29.22.037.29.27.2551,536
37.29.28.037.29.31.2551,024
37.29.40.037.29.42.255768
37.29.73.037.29.73.255256
37.29.78.037.29.79.255512
37.29.84.037.29.85.255512
37.29.88.037.29.88.255256
37.29.90.037.29.90.255256
37.29.92.037.29.93.255512
37.29.96.037.29.111.2554,096
37.230.245.037.230.245.255256
45.141.92.045.141.92.255256
46.232.201.046.232.201.255256
46.232.204.046.232.206.255768
46.232.207.046.232.207.255256
62.89.194.062.89.194.255256
78.25.64.078.25.87.2556,144
78.25.116.078.25.117.255512
78.25.124.078.25.126.255768
79.171.208.079.171.208.255256
80.253.10.080.253.10.255256
80.253.12.080.253.15.2551,024
83.149.8.083.149.12.2551,280
83.149.15.083.149.18.2551,024
83.149.19.083.149.23.2551,280
83.149.26.083.149.27.255512
83.149.41.083.149.41.255256
83.149.44.083.149.47.2551,024
83.149.53.083.149.54.255512
83.149.56.083.149.63.2552,048
83.169.192.083.169.203.2553,072
83.169.204.083.169.207.2551,024
83.169.209.083.169.210.255512
83.169.215.083.169.215.255256
83.169.231.083.169.231.255256
84.204.128.084.204.131.2551,024
84.204.137.084.204.137.255256
84.204.184.084.204.187.2551,024
85.26.160.085.26.165.2551,536
85.26.166.085.26.175.2552,560
85.26.179.085.26.180.255512
85.26.190.085.26.190.255256
85.26.196.085.26.207.2553,072
85.26.224.085.26.226.255768
85.26.231.085.26.239.2552,304
85.26.241.085.26.245.2551,280
92.38.42.092.38.42.255256
94.25.192.094.25.207.2554,096
94.25.212.094.25.215.2551,024
94.25.240.094.25.247.2552,048
95.141.225.095.141.225.255256
95.141.227.095.141.239.2553,328
109.95.228.0109.95.229.255512
109.106.200.0109.106.212.2553,328
109.106.215.0109.106.223.2552,304
109.188.120.0109.188.123.2551,024
128.204.64.0128.204.66.255768
128.204.70.0128.204.73.2551,024
176.193.72.0176.193.79.2552,048
178.176.49.0178.176.51.255768
178.176.64.0178.176.71.2552,048
178.176.80.0178.176.91.2553,072
178.176.128.0178.176.128.255256
178.176.130.0178.176.131.255512
178.176.133.0178.176.139.2551,792
178.176.140.0178.176.153.2553,584
178.176.156.0178.176.176.2555,376
178.176.177.0178.176.178.255512
178.176.179.0178.176.180.255512
178.176.181.0178.176.182.255512
178.176.183.0178.176.191.2552,304
178.176.199.0178.176.201.255768
178.176.230.0178.176.232.255768
178.176.236.0178.176.239.2551,024
178.176.254.0178.176.255.255512
178.177.64.0178.177.207.25536,864
178.177.208.0178.177.255.25512,288
178.178.7.0178.178.7.255256
178.178.10.0178.178.10.255256
178.178.13.0178.178.63.25513,056
178.178.78.0178.178.87.2552,560
178.178.96.0178.178.112.2554,352
178.178.113.0178.178.116.2551,024
178.178.117.0178.178.118.255512
178.178.119.0178.178.127.2552,304
178.178.138.0178.178.141.2551,024

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 31.173.98.0, 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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