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AS12978
DSMART

AS12978 announces 418,560 IPv4 addresses across 53 routed ranges, registered in TR. Figures come from the public global routing table and are refreshed daily.

419K addressesIPv4 space announced
53Routed ranges
TRRegistry country

Is AS12978 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 53 announced ranges.

Range startRange endAddresses
31.200.0.031.200.126.25532,512
31.200.127.031.200.127.255256
62.29.0.062.29.8.2552,304
62.29.9.062.29.11.255768
62.29.12.062.29.13.255512
62.29.14.062.29.23.2552,560
62.29.24.062.29.127.25526,624
83.66.0.083.66.19.2555,120
83.66.20.083.66.25.2551,536
83.66.26.083.66.27.255512
83.66.28.083.66.33.2551,536
83.66.34.083.66.35.255512
83.66.36.083.66.37.255512
83.66.38.083.66.57.2555,120
83.66.58.083.66.87.2557,680
83.66.88.083.66.96.2552,304
83.66.97.083.66.103.2551,792
83.66.104.083.66.121.2554,608
83.66.122.083.66.132.2552,816
83.66.133.083.66.143.2552,816
83.66.144.083.66.155.2553,072
83.66.156.083.66.183.2557,168
83.66.184.083.66.201.2554,608
83.66.202.083.66.255.25513,824
85.153.198.085.153.198.255256
91.233.80.091.233.80.255256
94.120.0.094.120.24.2556,400
94.120.25.094.120.26.255512
94.120.27.094.120.31.2551,280
94.120.32.094.120.151.25530,720
94.120.152.094.121.1.25527,136
94.121.2.094.121.95.25524,064
94.121.96.094.121.175.25520,480
94.121.176.094.121.180.2551,280
94.121.181.094.121.255.25519,200
94.122.0.094.122.47.25512,288
94.122.48.094.122.55.2552,048
94.122.56.094.122.98.25511,008
94.122.99.094.122.191.25523,808
94.122.192.094.123.175.25561,440
94.123.176.094.123.239.25516,384
94.123.240.094.123.255.2554,096
193.164.9.0193.164.9.255256
212.31.0.0212.31.31.2558,192
213.243.0.0213.243.2.255768
213.243.3.0213.243.4.255512
213.243.5.0213.243.20.2554,096
213.243.21.0213.243.28.2552,048
213.243.29.0213.243.31.255768
213.243.32.0213.243.51.2555,120
213.243.52.0213.243.53.255512
213.243.54.0213.243.56.255768
213.243.57.0213.243.63.2551,792

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 31.200.0.0, 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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