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AS1237
KREONET-AS-KR KISTI

AS1237 announces 292,352 IPv4 addresses across 121 routed ranges, registered in KR. Figures come from the public global routing table and are refreshed daily.

292K addressesIPv4 space announced
121Routed ranges
KRRegistry country

Is AS1237 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 121 announced ranges.

Range startRange endAddresses
134.75.0.0134.75.0.255256
134.75.2.0134.75.14.2553,328
134.75.17.0134.75.20.2551,024
134.75.21.0134.75.53.2558,448
134.75.54.0134.75.54.255256
134.75.56.0134.75.100.25511,520
134.75.104.0134.75.104.255256
134.75.106.0134.75.106.255256
134.75.109.0134.75.121.2553,328
134.75.133.0134.75.150.2554,608
134.75.152.0134.75.199.25512,288
134.75.201.0134.75.206.2551,536
134.75.208.0134.75.216.2552,304
134.75.218.0134.75.225.2552,048
134.75.227.0134.75.250.2556,144
134.75.251.0134.75.251.255256
134.75.255.0134.75.255.255256
147.47.120.0147.47.127.2552,048
150.183.0.0150.183.11.2553,072
150.183.12.0150.183.255.25562,464
202.30.40.0202.30.43.2551,024
202.30.60.0202.30.63.2551,024
202.31.182.0202.31.182.255256
203.230.0.0203.230.0.255256
203.230.2.0203.230.3.255512
203.230.6.0203.230.11.2551,536
203.230.16.0203.230.17.255512
203.230.22.0203.230.31.2552,560
203.230.60.0203.230.79.2555,120
203.230.108.0203.230.111.2551,024
203.230.116.0203.230.117.255512
203.230.120.0203.230.120.255256
203.230.126.0203.230.126.255256
203.233.155.0203.233.156.255512
203.241.40.0203.241.47.2552,048
203.241.116.0203.241.118.255768
203.241.120.0203.241.123.2551,024
203.241.164.0203.241.165.255512
203.241.169.0203.241.174.2551,536
203.247.64.0203.247.64.255256
203.247.69.0203.247.69.255256
203.247.73.0203.247.73.255256
203.247.160.0203.247.165.2551,536
203.247.167.0203.247.167.255256
203.247.170.0203.247.181.2553,072
203.247.184.0203.247.185.255512
203.247.187.0203.247.188.255512
203.247.190.0203.247.207.2554,608
203.247.216.0203.247.219.2551,024
203.250.0.0203.250.31.2558,192
203.250.96.0203.250.103.2552,048
203.250.110.0203.250.110.255256
203.250.112.0203.250.119.2552,048
203.250.155.0203.250.156.255512
203.250.157.0203.250.167.2552,816
203.250.172.0203.250.183.2553,072
203.250.192.0203.250.255.25516,384
203.253.96.0203.253.111.2554,096
203.253.135.0203.253.143.2552,304
203.253.224.0203.253.226.255768
203.253.230.0203.253.231.255512
203.253.234.0203.253.236.255768
203.253.238.0203.253.238.255256
203.254.40.0203.254.40.255256
203.254.168.0203.254.169.255512
203.254.175.0203.254.181.2551,792
203.254.182.0203.254.191.2552,560
210.98.5.0210.98.12.2552,048
210.98.14.0210.98.15.255512
210.98.24.0210.98.26.255768
210.98.28.0210.98.31.2551,024
210.98.44.0210.98.44.255256
210.98.47.0210.98.48.255512
210.98.49.0210.98.52.2551,024
210.98.53.0210.98.54.255512
210.98.55.0210.98.56.255512
210.98.59.0210.98.63.2551,280
210.107.144.0210.107.144.255256
210.107.146.0210.107.146.255256
210.107.152.0210.107.175.2556,144
210.107.248.0210.107.254.2551,792
210.110.128.0210.110.135.2552,048
210.110.143.0210.110.159.2554,352
210.110.182.0210.110.184.255768
210.110.189.0210.110.198.2552,560
210.110.205.0210.110.207.255768
210.110.224.0210.110.232.2552,304
210.110.235.0210.110.239.2551,280
210.110.252.0210.110.252.255256
210.110.254.0210.110.255.255512
210.114.104.0210.114.106.255768
210.114.108.0210.114.108.255256
210.117.192.0210.117.194.255768
210.117.197.0210.117.198.255512
210.117.208.0210.117.212.2551,280
210.117.214.0210.117.219.2551,536
210.117.224.0210.117.230.2551,792
210.117.236.0210.117.236.255256
210.117.238.0210.117.253.2554,096
210.119.20.0210.119.21.255512

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 134.75.0.0, 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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