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AS54103
MODMC-54103-AS

AS54103 announces 114,688 IPv4 addresses across 125 routed ranges, registered in US. Figures come from the public global routing table and are refreshed daily.

115K addressesIPv4 space announced
125Routed ranges
USRegistry country

Is AS54103 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 125 announced ranges.

Range startRange endAddresses
5.10.193.05.10.193.255256
5.10.195.05.10.195.255256
5.10.197.05.10.197.255256
5.10.199.05.10.199.255256
40.27.8.040.27.11.2551,024
40.27.244.040.27.247.2551,024
40.183.84.040.183.87.2551,024
40.183.248.040.183.251.2551,024
40.223.0.040.223.3.2551,024
40.223.44.040.223.47.2551,024
45.73.188.045.73.191.2551,024
45.87.21.045.87.21.255256
45.87.23.045.87.23.255256
45.88.121.045.88.121.255256
45.88.123.045.88.123.255256
45.133.253.045.133.253.255256
45.133.255.045.133.255.255256
45.134.129.045.134.129.255256
45.134.131.045.134.131.255256
45.143.193.045.143.193.255256
45.143.195.045.143.195.255256
45.250.8.045.250.11.2551,024
46.244.116.046.244.119.2551,024
64.6.176.064.6.183.2552,048
66.78.8.066.78.10.255768
66.78.12.066.78.15.2551,024
67.203.18.067.203.18.255256
67.203.40.067.203.47.2552,048
67.207.171.067.207.171.255256
67.219.24.067.219.31.2552,048
67.227.48.067.227.63.2554,096
79.143.129.079.143.129.255256
79.143.131.079.143.131.255256
79.143.137.079.143.137.255256
79.143.139.079.143.139.255256
85.203.48.085.203.51.2551,024
103.48.32.0103.48.34.255768
103.51.32.0103.51.35.2551,024
103.76.186.0103.76.187.255512
103.87.252.0103.87.253.255512
103.219.16.0103.219.19.2551,024
104.143.104.0104.143.111.2552,048
104.164.244.0104.164.247.2551,024
104.165.44.0104.165.47.2551,024
104.165.52.0104.165.59.2552,048
124.158.102.0124.158.103.255512
134.202.0.0134.202.7.2552,048
134.202.24.0134.202.27.2551,024
134.202.60.0134.202.63.2551,024
157.97.124.0157.97.127.2551,024
173.211.56.0173.211.63.2552,048
184.174.104.0184.174.107.2551,024
185.67.137.0185.67.137.255256
185.67.139.0185.67.139.255256
185.163.208.0185.163.211.2551,024
185.243.245.0185.243.245.255256
185.243.247.0185.243.247.255256
193.26.112.0193.26.113.255512
193.201.203.0193.201.203.255256
194.55.129.0194.55.129.255256
194.76.132.0194.76.133.255512
195.128.163.0195.128.163.255256
195.128.179.0195.128.179.255256
203.159.85.0203.159.85.255256
203.159.87.0203.159.87.255256
203.159.89.0203.159.89.255256
203.159.91.0203.159.91.255256
206.246.64.0206.246.70.2551,792
206.246.72.0206.246.73.255512
206.246.75.0206.246.83.2552,304
206.246.85.0206.246.95.2552,816
206.246.97.0206.246.105.2552,304
206.246.108.0206.246.111.2551,024
206.246.114.0206.246.117.2551,024
206.246.119.0206.246.127.2552,304
207.199.128.0207.199.130.255768
207.199.133.0207.199.135.255768
207.199.138.0207.199.138.255256
207.199.140.0207.199.142.255768
207.199.145.0207.199.146.255512
207.199.148.0207.199.148.255256
207.199.150.0207.199.151.255512
207.199.153.0207.199.155.255768
207.199.158.0207.199.158.255256
207.199.162.0207.199.164.255768
207.199.166.0207.199.166.255256
207.199.168.0207.199.170.255768
207.199.173.0207.199.175.255768
207.199.177.0207.199.191.2553,840
207.231.97.0207.231.98.255512
207.231.100.0207.231.101.255512
207.231.103.0207.231.103.255256
209.147.64.0209.147.70.2551,792
209.147.72.0209.147.72.255256
209.147.74.0209.147.81.2552,048
209.147.83.0209.147.86.2551,024
209.147.88.0209.147.89.255512
209.147.91.0209.147.92.255512
209.147.94.0209.147.95.255512
212.124.84.0212.124.85.255512

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 5.10.193.0, 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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