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AS7018
ATT-INTERNET4

AS7018 announces 89,231,992 IPv4 addresses across 1,961 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

89.2M addressesIPv4 space announced
1,961Routed ranges
USRegistry country

Is AS7018 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 1,961 ranges.

Range startRange endAddresses
12.0.4.012.0.119.25529,696
12.0.121.012.0.125.2551,280
12.0.128.012.0.223.25524,576
12.0.232.012.1.4.2557,424
12.1.6.012.1.47.25510,752
12.1.51.012.1.87.2559,472
12.1.89.012.1.95.2551,792
12.1.97.012.2.11.25543,776
12.2.13.012.2.34.2555,632
12.2.36.012.2.141.25527,136
12.2.143.012.2.168.2556,656
12.2.170.012.2.175.2551,536
12.2.177.012.3.31.25528,416
12.3.34.012.3.39.2551,536
12.3.41.012.3.64.2556,144
12.3.66.012.3.118.25513,568
12.3.120.012.3.166.25512,032
12.3.168.012.3.211.25511,264
12.3.214.012.3.222.2552,304
12.3.224.012.4.25.25514,848
12.4.28.012.4.163.25534,816
12.4.165.012.4.244.25520,480
12.4.246.012.5.6.2554,352
12.5.8.012.5.123.25529,696
12.5.125.012.5.132.2552,048
12.5.135.012.5.160.2556,656
12.5.164.012.5.185.2555,632
12.5.188.012.5.200.2553,328
12.5.202.012.6.8.25516,128
12.6.10.012.6.15.2551,536
12.6.17.012.6.20.2551,024
12.6.22.012.6.88.25517,152
12.6.90.012.6.112.2555,888
12.6.114.012.6.135.2555,632
12.6.137.012.6.177.25510,496
12.6.179.012.7.30.25527,648
12.7.32.012.7.141.25528,160
12.7.144.012.7.151.2552,048
12.7.153.012.7.159.2551,792
12.7.161.012.7.191.2557,936
12.7.194.012.7.199.2551,536
12.7.201.012.8.53.25527,904
12.8.55.012.8.58.2551,024
12.8.60.012.8.95.2559,216
12.8.97.012.8.109.2553,328
12.8.111.012.8.252.25536,352
12.8.254.012.9.28.2557,936
12.9.30.012.9.39.2552,560
12.9.42.012.9.117.25519,456
12.9.120.012.9.135.2554,096
12.9.140.012.9.149.2552,560
12.9.151.012.9.208.25514,848
12.9.210.012.9.237.2557,168
12.9.240.012.10.31.25512,288
12.10.34.012.10.65.2558,192
12.10.67.012.10.86.2555,120
12.10.88.012.10.101.2553,584
12.10.103.012.10.106.2551,024
12.10.109.012.10.114.2551,536
12.10.116.012.10.117.255512
12.10.119.012.10.218.25525,600
12.10.220.012.11.114.25538,656
12.11.116.012.11.147.2558,192
12.11.152.012.11.214.25516,128
12.11.216.012.11.255.25510,240
12.12.4.012.12.60.25514,592
12.12.62.012.12.156.25524,320
12.12.158.012.13.9.25527,648
12.13.11.012.13.34.2556,144
12.13.36.012.13.39.2551,024
12.13.48.012.13.49.255512
12.13.51.012.13.53.255768
12.13.56.012.13.68.2553,328
12.13.74.012.13.172.25525,344
12.13.174.012.13.176.127640
12.13.177.012.13.209.2558,448
12.13.211.012.13.232.2555,632
12.13.234.012.13.254.2555,376
12.14.0.012.14.11.2553,072
12.14.13.012.14.13.255256
12.14.15.012.14.87.25518,688
12.14.89.012.14.146.25514,848
12.14.148.012.14.151.2551,024
12.14.153.012.14.156.2551,024
12.14.158.012.14.169.2553,072
12.14.171.012.14.216.25511,776
12.14.218.012.14.223.2551,536
12.14.225.012.14.231.2551,792
12.14.236.012.14.245.2552,560
12.14.247.012.15.5.2553,840
12.15.8.012.15.27.2555,120
12.15.29.012.15.39.2552,816
12.15.41.012.15.48.2552,048
12.15.50.012.15.143.25524,064
12.15.145.012.15.159.2553,840
12.15.161.012.15.172.2553,072
12.15.174.012.16.21.25526,624
12.16.23.012.16.94.25518,432
12.16.96.012.16.97.255512
12.16.100.012.16.195.25524,576

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 12.0.4.0, 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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