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AS4713
OCN NTT Communications Corporation

AS4713 announces 28,623,872 IPv4 addresses across 121 routed ranges, registered in JP. Figures come from the public global routing table and are refreshed daily.

28.6M addressesIPv4 space announced
121Routed ranges
JPRegistry country

Is AS4713 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 121 announced ranges.

Range startRange endAddresses
27.114.0.027.114.127.25532,768
27.132.8.027.132.8.255256
27.133.240.027.133.243.2551,024
36.52.223.036.52.223.255256
58.88.0.058.95.255.255524,288
60.32.0.060.47.255.2551,048,576
61.4.152.061.4.175.2556,144
61.112.0.061.113.255.255131,072
61.114.112.061.114.127.2554,096
61.118.0.061.119.255.255131,072
61.126.0.061.127.255.255131,072
61.199.0.061.199.255.25565,536
61.207.0.061.208.255.255131,072
61.214.0.061.214.255.25565,536
103.163.250.0103.163.251.255512
114.144.0.0114.191.255.2553,145,728
118.0.0.0118.23.255.2551,572,864
119.161.104.0119.161.111.2552,048
121.112.0.0121.119.255.255524,288
122.1.0.0122.1.255.25565,536
122.16.0.0122.31.255.2551,048,576
123.216.0.0123.227.255.255786,432
124.84.0.0124.87.255.255262,144
124.96.0.0124.103.255.255524,288
125.170.0.0125.170.255.25565,536
125.172.0.0125.175.255.255262,144
125.200.0.0125.207.255.255524,288
133.153.0.0133.153.22.2555,888
133.153.23.0133.153.255.25559,648
138.212.224.0138.212.225.255512
138.212.227.0138.212.230.2551,024
138.212.238.0138.212.239.255512
138.212.241.0138.212.241.255256
138.212.245.0138.212.245.255256
138.212.249.0138.212.249.255256
138.212.252.0138.212.252.255256
150.5.64.0150.5.127.25516,384
150.35.0.0150.35.235.25560,416
150.35.236.0150.35.255.2555,120
150.61.4.0150.61.4.255256
150.61.8.0150.61.8.255256
150.61.13.0150.61.13.255256
150.61.17.0150.61.17.255256
150.61.31.0150.61.31.255256
150.61.33.0150.61.33.255256
150.61.35.0150.61.35.255256
150.61.41.0150.61.41.255256
150.61.46.0150.61.46.255256
150.61.49.0150.61.49.255256
150.61.53.0150.61.53.255256
150.61.64.0150.61.70.2551,792
150.61.71.0150.61.255.25547,360
153.124.192.0153.124.199.2552,048
153.128.0.0153.253.255.2558,257,536
157.64.0.0157.64.255.25565,536
157.120.124.0157.120.127.2551,024
159.211.22.0159.211.22.255256
159.211.224.0159.211.224.255256
159.211.237.0159.211.237.255256
159.211.248.0159.211.248.255256
164.43.141.0164.43.141.255256
164.162.6.0164.162.7.255512
164.162.16.0164.162.16.255256
165.108.0.0165.108.255.25565,536
165.241.0.0165.241.255.25565,536
180.0.0.0180.63.255.2554,194,304
182.161.77.0182.161.79.255768
198.232.16.0198.232.16.255256
202.18.209.0202.18.210.255512
202.19.152.0202.19.152.255256
202.34.80.0202.34.83.2551,024
202.34.90.0202.34.90.255256
202.34.92.0202.34.94.255768
202.34.100.0202.34.100.255256
202.34.102.0202.34.104.255768
202.34.106.0202.34.111.2551,536
202.157.100.0202.157.103.2551,024
202.157.112.0202.157.125.2553,584
202.191.16.0202.191.31.2554,096
202.213.16.0202.213.19.2551,024
202.216.26.0202.216.26.255256
202.234.192.0202.234.255.25516,384
202.246.122.0202.246.123.255512
202.246.176.0202.246.179.2551,024
202.255.27.0202.255.29.255768
203.139.160.0203.139.191.2558,192
203.140.96.0203.140.127.2558,192
210.132.0.0210.132.63.25516,384
210.134.16.0210.134.31.2554,096
210.145.0.0210.145.255.25565,536
210.154.0.0210.154.255.25565,536
210.160.0.0210.164.255.255327,680
210.170.64.0210.170.127.25516,384
210.171.200.0210.171.207.2552,048
210.190.0.0210.190.255.25565,536
210.225.0.0210.227.255.255196,608
210.232.0.0210.232.255.25565,536
210.248.0.0210.248.255.25565,536
210.254.128.0210.254.255.25532,768
211.0.0.0211.0.255.25565,536

Check a specific address

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