AS1237: IP address ranges and network type

AS1237 holds 219 IPv4 segments covering 293,120 addresses across 1 country, 100% of them in South Korea as of 14 September 2026. By usage type it is 88% education network and 13% gateway / NAT egress.

Network usage types in AS1237

What kind of address space a network is made of decides what kind of proxy risk it carries: datacenter space is where hosting-based proxies and VPN exits live; residential broadband and mobile space is where home-broadband proxies and dial-up pools live. The share is by IPv4 segment.

Countries where AS1237 has addresses

Share of the network's IPv4 segments by the country each segment is located in. A network whose space is spread over many countries is usually a hosting or transit operator rather than a domestic broadband provider.

Look up a single address in AS1237

Free, no signup: curl https://ip99.com/v1/ip/134.75.0.0 returns the country, ASN, usage type and a risk score for one address — see the API documentation. For scoring at volume, pricing; for what the score does and does not mean, what an IP risk score means.

Go deeper

How to tell whether an address is a proxy, VPN or datacenter · Rotating residential proxies and dial-up pools · Residential proxy exits observed this week · IP ranges by country

FAQ

How many IP addresses does AS1237 have?

In the IP99 geolocation database AS1237 holds 219 IPv4 segments covering 293,120 addresses as of 14 September 2026. Counts are by located segment, not by BGP announcement, so they can differ from a routing table.

Is AS1237 a residential or a datacenter network?

88% of its IPv4 segments are classified as education network and 13% as gateway / NAT egress. The classification is per segment: one network can carry both kinds of space, which is why a lookup of the exact address is more useful than the network-level share.

Which countries does AS1237 cover?

AS1237 has addresses in 1 country; the largest share is South Korea (100%).