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AS1916
Rede Nacional de Ensino e Pesquisa

AS1916 announces 660,448 IPv4 addresses across 88 routed ranges, registered in BR. Figures come from the public global routing table and are refreshed daily.

660K addressesIPv4 space announced
88Routed ranges
BRRegistry country

Is AS1916 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 88 announced ranges.

Range startRange endAddresses
132.255.96.0132.255.99.2551,024
150.161.0.0150.161.255.25565,536
150.165.0.0150.165.255.25565,536
186.249.222.128186.249.222.15932
200.17.0.0200.17.2.63576
200.17.2.64200.17.7.2551,472
200.17.8.0200.17.15.2552,048
200.17.32.0200.17.39.631,856
200.17.39.64200.17.47.2552,240
200.17.48.0200.17.50.127640
200.17.50.128200.17.79.2557,552
200.17.112.0200.17.118.2551,792
200.17.119.0200.17.124.1271,408
200.17.124.128200.17.135.1272,816
200.17.135.128200.17.143.2552,176
200.17.144.0200.17.159.2554,096
200.17.176.0200.17.191.2554,096
200.18.24.128200.18.24.255128
200.18.25.128200.18.25.19164
200.18.80.0200.18.95.2554,096
200.18.128.0200.18.146.634,672
200.18.146.64200.18.223.25519,904
200.19.16.0200.19.47.2558,192
200.19.112.0200.19.155.25511,264
200.19.156.0200.19.191.2559,216
200.128.128.0200.128.191.25516,384
200.129.0.0200.129.1.255512
200.129.2.0200.129.61.6315,168
200.129.61.64200.129.63.95544
200.129.63.96200.129.87.2556,304
200.129.88.0200.129.95.1911,984
200.129.95.192200.129.103.2552,112
200.129.104.0200.129.151.25512,288
200.129.152.0200.129.154.191704
200.129.154.192200.129.154.25564
200.129.155.0200.129.188.2558,704
200.129.189.0200.129.233.25511,520
200.129.234.0200.129.236.63576
200.129.236.64200.130.53.25518,880
200.130.55.0200.130.55.255256
200.130.57.0200.130.63.2551,792
200.130.64.0200.130.224.6341,024
200.130.224.64200.131.47.25520,416
200.131.48.0200.131.228.25546,336
200.131.229.0200.131.255.2556,912
200.133.0.0200.133.16.1594,256
200.133.16.160200.133.26.632,464
200.133.26.64200.133.26.255192
200.133.27.0200.133.34.2552,048
200.133.35.0200.133.41.2551,792
200.133.42.0200.133.47.631,344
200.133.47.64200.133.48.63256
200.133.48.64200.133.48.255192
200.133.49.0200.133.50.63320
200.133.50.64200.133.64.2553,776
200.133.65.0200.133.66.63320
200.133.66.64200.133.129.25516,320
200.133.130.0200.133.162.638,256
200.133.162.64200.133.223.25515,808
200.133.240.0200.133.255.2554,096
200.136.177.0200.136.181.2551,280
200.136.188.0200.136.188.255256
200.137.0.0200.137.3.127896
200.137.3.128200.137.134.12733,536
200.137.134.128200.137.140.2551,664
200.137.141.0200.137.148.1271,920
200.137.148.128200.137.164.634,032
200.137.164.64200.137.165.127320
200.137.165.128200.137.166.255384
200.137.167.0200.137.176.1912,496
200.137.176.192200.137.179.63640
200.137.179.64200.137.255.25519,648
200.139.0.0200.139.1.255512
200.139.2.0200.139.63.25515,872
200.143.192.0200.143.194.255768
200.143.195.0200.143.204.2552,560
200.143.205.0200.143.251.25512,032
200.143.252.0200.143.255.2551,024
200.144.91.0200.144.94.2551,024
200.144.98.0200.144.98.255256
200.144.112.0200.144.117.2551,536
200.159.240.0200.159.255.2554,096
200.235.0.0200.235.127.25532,768
200.237.0.0200.237.1.191448
200.237.1.192200.237.7.2551,600
200.237.8.0200.237.12.2551,280
200.237.13.0200.237.31.2554,864
200.239.128.0200.239.191.25516,384

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 132.255.96.0, 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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