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AS28198
SEMPRE TELECOMUNICACOES LTDA

AS28198 announces 68,352 IPv4 addresses across 37 routed ranges, registered in BR. Figures come from the public global routing table and are refreshed daily.

68K addressesIPv4 space announced
37Routed ranges
BRRegistry country

Is AS28198 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 37 announced ranges.

Range startRange endAddresses
128.201.176.0128.201.179.2551,024
131.100.84.0131.100.87.2551,024
131.221.48.0131.221.51.2551,024
138.94.148.0138.94.151.2551,024
138.99.240.0138.99.243.2551,024
143.137.240.0143.137.243.2551,024
168.228.116.0168.228.119.2551,024
170.238.176.0170.238.179.2551,024
170.239.156.0170.239.159.2551,024
177.52.48.0177.52.51.2551,024
177.52.52.0177.52.55.2551,024
177.66.48.0177.66.58.2552,816
177.66.59.0177.66.61.255768
177.66.62.0177.66.63.255512
177.67.8.0177.67.15.2552,048
177.73.192.0177.73.198.2551,792
177.73.199.0177.73.199.255256
177.84.152.0177.84.155.2551,024
177.93.96.0177.93.103.2552,048
177.130.64.0177.130.79.2554,096
177.131.0.0177.131.4.2551,280
177.131.6.0177.131.15.2552,560
177.137.152.0177.137.159.2552,048
177.185.16.0177.185.23.2552,048
177.185.24.0177.185.31.2552,048
177.222.240.0177.222.247.2552,048
179.106.160.0179.106.167.2552,048
179.125.96.0179.125.103.2552,048
186.194.240.0186.194.255.2554,096
187.84.240.0187.84.255.2554,096
187.109.0.0187.109.15.2554,096
189.51.16.0189.51.31.2554,096
189.90.192.0189.90.196.2551,280
189.90.197.0189.90.207.2552,816
191.5.32.0191.5.40.2552,304
191.5.41.0191.5.47.2551,792
192.140.108.0192.140.111.2551,024

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 128.201.176.0, 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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