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AS56
DNIC-AS-00056

AS56 announces 7,982,848 IPv4 addresses across 316 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

8M addressesIPv4 space announced
316Routed ranges
USRegistry country

Is AS56 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 316 ranges.

Range startRange endAddresses
129.48.0.0129.48.255.25565,536
129.51.3.0129.51.3.255256
129.51.5.0129.51.5.255256
129.51.100.0129.51.100.255256
129.52.0.0129.54.89.255154,112
129.54.90.0129.54.175.25522,016
129.54.176.0129.54.255.25520,480
129.61.0.0129.61.255.25565,536
129.141.0.0129.141.159.25540,960
129.141.160.0129.141.223.25516,384
129.141.224.0129.141.255.2558,192
129.198.0.0129.198.255.25565,536
129.238.0.0129.238.255.25565,536
130.53.0.0130.53.67.25517,408
130.53.68.0130.53.255.25548,128
131.3.0.0131.3.255.25565,536
131.5.48.0131.5.63.2554,096
131.6.0.0131.6.12.2553,328
131.6.13.0131.6.21.2552,304
131.6.22.0131.6.196.25544,800
131.6.197.0131.7.52.25528,672
131.7.53.0131.7.177.25532,000
131.7.178.0131.7.248.25518,176
131.7.250.0131.7.255.2551,536
131.9.0.0131.10.120.25596,512
131.10.121.0131.12.7.255102,144
131.12.8.0131.13.120.25594,464
131.13.121.0131.13.255.25534,560
131.15.16.0131.15.35.2555,120
131.15.116.0131.15.117.255512
131.15.119.0131.15.119.255256
131.16.80.0131.16.83.2551,024
131.16.84.0131.16.87.2551,024
131.17.0.0131.17.120.25530,976
131.17.121.0131.17.255.25534,560
131.18.1.0131.18.1.255256
131.18.98.0131.18.99.255512
131.18.104.0131.18.105.255512
131.18.128.0131.18.128.255256
131.18.176.0131.18.177.255512
131.22.0.0131.22.8.2552,304
131.22.9.0131.22.200.25549,152
131.22.201.0131.22.255.25514,080
131.24.0.0131.25.245.255128,512
131.25.246.0131.25.255.2552,560
131.27.0.0131.27.63.25516,384
131.28.0.0131.28.123.25531,744
131.28.124.0131.30.120.255130,304
131.30.121.0131.30.255.25534,560
131.32.0.0131.32.255.25565,536
131.33.120.0131.33.120.255256
131.34.0.0131.34.250.25564,256
131.34.251.0131.35.255.25566,816
131.37.0.0131.37.208.25553,504
131.37.209.0131.37.255.25512,032
131.39.0.0131.39.248.25563,744
131.39.249.0131.40.255.25567,328
131.43.9.0131.43.11.255768
131.43.14.0131.43.23.2552,560
131.43.28.0131.43.28.255256
131.43.30.0131.43.42.2553,328
131.43.46.0131.43.58.2553,328
131.43.62.0131.43.74.2553,328
131.43.78.0131.43.90.2553,328
131.43.110.0131.43.122.2553,328
131.43.123.0131.43.124.255512
131.43.126.0131.43.138.2553,328
131.43.142.0131.43.155.2553,584
131.43.158.0131.43.170.2553,328
131.43.190.0131.43.203.2553,584
131.43.206.0131.43.219.2553,584
131.43.222.0131.43.234.2553,328
131.43.238.0131.43.251.2553,584
131.44.0.0131.44.4.2551,280
131.44.5.0131.44.39.2558,960
131.44.40.0131.44.67.2557,168
131.44.68.0131.44.249.25546,592
131.44.250.0131.44.251.255512
131.44.252.0131.46.120.25597,536
131.46.121.0131.46.255.25534,560
131.48.0.0131.48.120.25530,976
131.48.121.0131.48.255.25534,560
131.50.0.0131.50.120.25530,976
131.50.121.0131.51.120.25565,536
131.51.121.0131.52.120.25565,536
131.52.121.0131.53.120.25565,536
131.53.121.0131.53.151.2557,936
131.53.152.0131.53.255.25526,624
131.55.0.0131.55.121.25531,232
131.55.122.0131.56.120.25565,280
131.56.121.0131.56.255.25534,560
131.58.0.0131.58.120.25530,976
131.58.121.0131.59.23.25540,704
131.59.24.0131.59.120.25524,832
131.59.121.0131.59.255.25534,560
131.60.10.0131.60.11.255512
131.60.14.0131.60.27.2553,584
131.60.30.0131.60.42.2553,328
131.60.46.0131.60.56.2552,816
131.60.62.0131.60.88.2556,912

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 129.48.0.0, 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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