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AS2510
INFOWEB FUJITSU LIMITED

AS2510 announces 1,489,408 IPv4 addresses across 105 routed ranges, registered in JP. Figures come from the public global routing table and are refreshed daily.

1.5M addressesIPv4 space announced
105Routed ranges
JPRegistry country

Is AS2510 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 105 announced ranges.

Range startRange endAddresses
58.1.0.058.1.127.25532,768
61.121.64.061.121.65.255512
61.121.67.061.121.79.2553,328
61.121.84.061.121.97.2553,584
61.121.100.061.121.123.2556,144
61.124.64.061.124.255.25549,152
61.210.0.061.210.63.25516,384
61.210.128.061.210.159.2558,192
61.210.168.061.210.255.25522,528
111.64.64.0111.64.87.2556,144
111.64.96.0111.64.255.25540,960
111.171.128.0111.171.131.2551,024
111.171.135.0111.171.191.25514,592
111.171.224.0111.171.255.2558,192
115.176.128.0115.176.191.25516,384
115.177.192.0115.177.233.25510,752
115.177.238.0115.177.255.2554,608
116.83.128.0116.83.159.2558,192
116.83.161.0116.83.161.255256
116.83.165.0116.83.183.2554,864
116.83.192.0116.83.255.25516,384
121.93.192.0121.93.255.25516,384
121.94.64.0121.94.78.2553,840
121.94.83.0121.94.170.25522,528
121.94.175.0121.94.212.2559,728
121.94.215.0121.94.255.25510,496
121.95.64.0121.95.99.2559,216
121.95.102.0121.95.127.2556,656
122.253.0.0122.253.255.25565,536
124.24.0.0124.24.31.2558,192
124.24.64.0124.24.191.25532,768
124.25.64.0124.25.68.2551,280
124.25.73.0124.25.127.25514,080
125.0.64.0125.0.125.25515,872
125.0.130.0125.0.143.2553,584
125.0.148.0125.0.243.25524,576
125.0.248.0125.1.51.25515,360
125.1.56.0125.1.76.2555,376
125.1.81.0125.1.127.25512,032
125.1.192.0125.1.221.2557,680
125.1.226.0125.1.255.2557,680
125.3.0.0125.3.63.25516,384
125.3.128.0125.3.191.25516,384
133.162.0.0133.162.63.25516,384
133.162.88.0133.162.95.2552,048
133.162.112.0133.162.113.255512
133.162.122.0133.162.123.255512
133.162.127.0133.162.128.255512
133.162.135.0133.162.139.2551,280
133.162.160.0133.162.175.2554,096
133.162.178.0133.162.183.2551,536
133.162.187.0133.162.187.255256
133.162.189.0133.162.191.255768
133.162.228.0133.162.229.255512
133.162.232.0133.162.233.255512
133.162.235.0133.162.235.255256
133.162.237.0133.162.244.2552,048
133.162.246.0133.162.247.255512
133.162.249.0133.162.251.255768
133.162.254.0133.163.255.25566,048
163.59.0.0163.59.255.25565,536
164.69.0.0164.69.255.25565,536
164.70.24.0164.70.63.25510,240
164.71.0.0164.71.255.25565,536
175.179.0.0175.179.63.25516,384
175.179.128.0175.179.255.25532,768
175.184.0.0175.184.15.2554,096
175.184.48.0175.184.119.25518,432
175.184.123.0175.184.127.2551,280
192.51.43.0192.51.43.255256
202.208.32.0202.208.63.2558,192
202.216.192.0202.216.215.2556,144
202.219.0.0202.219.62.25516,128
202.219.64.0202.219.255.25549,152
202.233.192.0202.233.255.25516,384
202.237.114.0202.237.114.255256
202.248.0.0202.248.36.2559,472
202.248.38.0202.248.88.25513,056
202.248.90.0202.248.140.25513,056
202.248.142.0202.248.174.2558,448
202.248.176.0202.248.237.25515,872
202.248.240.0202.248.255.2554,096
202.250.232.0202.250.232.255256
210.131.0.0210.131.3.2551,024
210.131.6.0210.131.15.2552,560
210.131.20.0210.131.127.25527,648
210.157.64.0210.157.77.2553,584
211.125.0.0211.125.63.25516,384
211.128.192.0211.128.255.25516,384
211.133.0.0211.133.63.25516,384
218.217.128.0218.217.255.25532,768
218.229.128.0218.229.255.25532,768
219.97.0.0219.97.63.25516,384
219.97.128.0219.97.255.25532,768
219.116.0.0219.116.127.25532,768
220.145.192.0220.145.255.25516,384
220.209.0.0220.209.31.2558,192
220.209.52.0220.209.71.2555,120
220.209.75.0220.209.255.25546,336
222.158.0.0222.158.63.25516,384

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 58.1.0.0, 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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