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AS21021
MULTIMEDIA-AS Cable DTV Internet Voice Provider in Poland.

AS21021 announces 601,344 IPv4 addresses across 46 routed ranges, registered in PL. Figures come from the public global routing table and are refreshed daily.

601K addressesIPv4 space announced
46Routed ranges
PLRegistry country

Is AS21021 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 46 announced ranges.

Range startRange endAddresses
31.6.128.031.6.217.25523,040
31.6.219.031.6.223.2551,280
31.42.16.031.42.31.2554,096
37.190.128.037.190.255.25532,768
46.186.0.046.186.102.25526,368
46.186.103.046.186.127.2556,400
46.231.56.046.231.63.2552,048
62.61.32.062.61.63.2558,192
62.141.192.062.141.223.2558,192
62.141.240.062.141.255.2554,096
80.244.128.080.244.159.2558,192
80.245.176.080.245.191.2554,096
81.190.0.081.190.255.25565,536
82.115.64.082.115.95.2558,192
83.68.64.083.68.95.2558,192
84.38.80.084.38.95.2554,096
85.117.0.085.117.31.2558,192
87.116.192.087.116.255.25516,384
89.17.224.089.17.255.2558,192
89.228.0.089.229.63.25581,920
89.229.96.089.229.191.25524,576
89.229.208.089.231.95.255102,400
89.231.128.089.231.255.25532,768
92.42.112.092.42.119.2552,048
93.94.184.093.94.191.2552,048
94.78.128.094.78.191.25516,384
94.251.128.094.251.167.25510,240
94.251.169.094.251.255.25522,272
95.129.224.095.129.231.2552,048
95.174.32.095.174.63.2558,192
176.107.112.0176.107.119.2552,048
176.221.96.0176.221.127.2558,192
185.31.184.0185.31.187.2551,024
193.43.240.0193.43.243.2551,024
193.106.76.0193.106.79.2551,024
193.200.118.0193.200.119.255512
194.8.68.0194.8.69.255512
194.116.132.0194.116.133.255512
194.149.240.0194.149.240.255256
195.93.134.0195.93.135.255512
195.93.222.0195.93.223.255512
213.136.224.0213.136.255.2558,192
217.70.48.0217.70.63.2554,096
217.75.48.0217.75.63.2554,096
217.144.192.0217.144.223.2558,192
217.172.224.0217.172.255.2558,192

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 31.6.128.0, 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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