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AS701
UUNET

AS701 announces 40,555,008 IPv4 addresses across 1,416 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

40.6M addressesIPv4 space announced
1,416Routed ranges
USRegistry country

Is AS701 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 1,416 ranges.

Range startRange endAddresses
23.29.96.023.29.111.2554,096
23.183.88.023.183.88.255256
63.0.0.063.23.33.2551,516,032
63.23.35.063.23.47.2553,328
63.23.51.063.23.63.2553,328
63.23.67.063.23.79.2553,328
63.23.83.063.24.201.25596,000
63.24.208.063.25.255.25577,824
63.26.2.063.26.2.255256
63.26.16.063.26.255.25561,440
63.27.50.063.31.255.255314,880
63.36.0.063.38.111.255159,744
63.38.126.063.38.126.255256
63.38.128.063.38.128.255256
63.38.130.063.38.131.255512
63.38.134.063.38.255.25531,232
63.48.0.063.53.255.255393,216
63.56.0.063.57.255.255131,072
63.60.0.063.64.23.255268,288
63.64.25.063.64.35.2552,816
63.64.38.063.64.40.255768
63.64.42.063.64.53.2553,072
63.64.55.063.64.59.2551,280
63.64.62.063.64.72.2552,816
63.64.74.063.64.74.255256
63.64.76.063.64.84.2552,304
63.64.86.063.64.105.2555,120
63.64.108.063.64.125.2554,608
63.64.127.063.64.129.255768
63.64.132.063.65.21.25537,376
63.65.23.063.65.24.255512
63.65.26.063.65.157.25533,792
63.65.160.063.65.168.2552,304
63.65.170.063.65.235.25516,896
63.65.239.063.66.68.25522,016
63.66.70.063.66.159.25523,040
63.66.164.063.66.172.2552,304
63.66.174.063.67.67.25538,400
63.67.72.063.67.169.25525,088
63.67.174.063.67.237.25516,384
63.67.239.063.67.239.255256
63.67.242.063.68.177.25549,152
63.68.180.063.68.189.2552,560
63.68.192.063.69.15.25520,480
63.69.24.063.69.67.25511,264
63.69.69.063.69.89.2555,376
63.69.92.063.70.1.25542,496
63.70.3.063.70.4.255512
63.70.6.063.70.71.25516,896
63.70.74.063.70.79.2551,536
63.70.96.063.70.137.25510,752
63.70.139.063.70.163.2556,400
63.70.166.063.70.233.25517,408
63.70.236.063.71.2.2555,888
63.71.4.063.71.7.2551,024
63.71.16.063.71.179.25541,984
63.71.182.063.71.210.2557,424
63.71.212.063.71.253.25510,752
63.71.255.063.72.207.25553,504
63.72.212.063.73.9.25513,824
63.73.13.063.73.105.25523,808
63.73.107.063.73.198.25523,552
63.73.200.063.73.213.2553,584
63.73.216.063.74.190.25559,136
63.74.192.063.74.207.2554,096
63.74.210.063.75.30.25519,712
63.75.32.063.75.59.2557,168
63.75.64.063.75.166.25526,368
63.75.168.063.76.5.25524,064
63.76.8.063.76.23.2554,096
63.76.25.063.76.51.2556,912
63.76.56.063.76.56.255256
63.76.58.063.76.65.2552,048
63.76.68.063.76.73.2551,536
63.76.76.063.76.87.2553,072
63.76.89.063.76.100.2553,072
63.76.102.063.76.131.2557,680
63.76.133.063.76.136.2551,024
63.76.138.063.76.176.2559,984
63.76.178.063.76.207.2557,680
63.76.210.063.76.247.2559,728
63.77.0.063.77.22.2555,888
63.77.32.063.77.41.2552,560
63.77.43.063.77.75.2558,448
63.77.78.063.77.109.2558,192
63.77.111.063.77.142.2558,192
63.77.144.063.77.193.25512,800
63.77.195.063.77.199.2551,280
63.77.208.063.77.231.2556,144
63.77.236.063.78.115.25534,816
63.78.120.063.78.206.25522,272
63.78.208.063.78.209.255512
63.78.211.063.78.211.255256
63.78.216.063.78.241.2556,656
63.78.243.063.78.243.255256
63.78.248.063.78.255.2552,048
63.79.1.063.79.55.25514,080
63.79.64.063.79.87.2556,144
63.79.92.063.79.127.2559,216
63.79.136.063.79.175.25510,240

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 23.29.96.0, 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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