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AS306
DNIC-ASBLK-00306-00371

AS306 announces 4,557,312 IPv4 addresses across 147 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

4.6M addressesIPv4 space announced
147Routed ranges
USRegistry country

Is AS306 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 147 announced ranges.

Range startRange endAddresses
55.10.0.055.10.255.25565,536
55.15.0.055.15.203.25552,224
55.15.204.055.15.255.25513,312
55.17.0.055.17.73.25518,944
55.17.74.055.17.255.25546,592
55.22.69.055.22.69.255256
55.25.5.055.25.5.255256
55.38.0.055.38.255.25565,536
55.44.0.055.44.255.25565,536
55.51.0.055.51.55.25514,336
55.51.58.055.51.255.25550,688
55.61.0.055.61.255.25565,536
55.68.0.055.68.255.25565,536
55.78.0.055.78.220.25556,576
55.78.222.055.78.255.2558,704
55.85.0.055.85.15.2554,096
55.85.16.055.85.27.2553,072
55.85.28.055.85.43.2554,096
55.85.44.055.85.61.2554,608
55.85.62.055.85.81.2555,120
55.85.82.055.85.101.2555,120
55.85.102.055.85.121.2555,120
55.85.122.055.85.150.2557,424
55.85.151.055.85.255.25526,880
55.86.2.055.86.2.255256
55.194.0.055.194.255.25565,536
132.79.0.0132.79.70.25518,176
132.79.71.0132.79.128.25514,848
132.79.129.0132.79.159.2557,936
132.79.160.0132.80.130.25558,112
132.80.131.0132.81.198.25582,944
132.81.199.0132.81.242.25511,264
132.81.243.0132.81.253.2552,816
132.81.254.0132.82.198.25551,456
132.82.199.0132.82.253.25514,080
132.82.254.0132.83.55.25514,848
132.83.56.0132.83.122.25517,152
132.83.123.0132.83.127.2551,280
132.83.128.0132.84.12.25536,096
132.84.13.0132.84.198.25547,616
132.84.199.0132.84.200.255512
132.84.201.0132.84.253.25513,568
132.84.254.0132.85.198.25551,456
132.85.199.0132.85.253.25514,080
132.85.254.0132.86.253.25565,536
132.86.254.0132.87.198.25551,456
132.87.199.0132.87.253.25514,080
132.87.254.0132.89.253.255131,072
132.89.254.0132.90.253.25565,536
132.90.254.0132.92.47.25578,336
132.92.48.0132.92.253.25552,736
132.92.254.0132.93.47.25512,800
132.93.48.0132.93.253.25552,736
132.93.254.0132.94.242.25562,720
132.94.243.0132.94.253.2552,816
132.94.254.0132.95.253.25565,536
132.95.254.0132.96.31.2558,704
132.96.32.0132.96.198.25542,752
132.96.199.0132.96.253.25514,080
132.96.254.0132.97.242.25562,720
132.97.243.0132.97.253.2552,816
132.97.254.0132.98.47.25512,800
132.98.48.0132.98.242.25549,920
132.98.243.0132.98.253.2552,816
132.98.254.0132.99.12.2553,840
132.99.13.0132.99.198.25547,616
132.99.199.0132.99.253.25514,080
132.99.254.0132.100.253.25565,536
132.100.254.0132.101.12.2553,840
132.101.13.0132.101.242.25558,880
132.101.243.0132.101.253.2552,816
132.101.254.0132.102.47.25512,800
132.102.48.0132.102.198.25538,656
132.102.199.0132.102.253.25514,080
132.102.254.0132.103.253.25565,536
132.103.254.0132.104.250.25564,768
132.104.251.0132.104.253.255768
132.104.254.0132.105.12.2553,840
132.105.13.0132.105.253.25561,696
132.105.254.0132.106.12.2553,840
132.106.13.0132.106.249.25560,672
132.106.250.0132.106.253.2551,024
132.106.254.0132.107.198.25551,456
132.107.199.0132.107.253.25514,080
132.107.254.0132.108.198.25551,456
132.108.199.0132.108.253.25514,080
132.108.254.0132.109.198.25551,456
132.109.199.0132.109.253.25514,080
132.109.254.0132.110.47.25512,800
132.110.48.0132.110.198.25538,656
132.110.199.0132.110.253.25514,080
132.110.254.0132.111.47.25512,800
132.111.48.0132.111.253.25552,736
132.111.254.0132.112.198.25551,456
132.112.199.0132.112.242.25511,264
132.112.243.0132.112.253.2552,816
132.112.254.0132.113.253.25565,536
132.113.254.0132.114.12.2553,840
132.114.13.0132.114.253.25561,696
132.114.254.0132.115.47.25512,800

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 55.10.0.0, 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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