AS1781 is the autonomous system of Korea Advanced Institute of Science and Technology. It holds 90,112 IPv4 addresses in 4 prefixes, mainly in 
South Korea.
By IPv4 addresses the network ranks #1,994 worldwide and #61 of 870 networks in South Korea. That is 0.08% of the country’s IPv4 space.
The largest block is 143.248.0.0 to 143.248.255.255 with 65,536 addresses, geolocated to Yuseong (Daehak-ro).
- IPv4 addresses
- 90,112
- IPv4 prefixes
- 4
- World rank
- #1,994
- Country share
- 0.08%
Addresses by country
- South Korea 100%
Largest blocks
- 143.248.0.0 Yuseong (Daehak-ro)65,536
- 137.68.0.0 Yuseong (Daehak-ro)16,384
- 210.107.128.0 Yuseong (Daehak-ro)4,096
- 192.249.16.0 Daejeon4,096
Networks of similar size
90,112
90,112
90,112
90,112IPv4 prefixes
Questions and answers
Who owns AS1781?
Autonomous system AS1781 is operated by Korea Advanced Institute of Science and Technology.
How many IP addresses does AS1781 have?
The network holds 90,112 IPv4 addresses in 4 prefixes.
Which country is AS1781 in?
The main country is South Korea.
How big is AS1781?
By IPv4 addresses it ranks #1,994 worldwide.
What is the largest address block of AS1781?
143.248.0.0 to 143.248.255.255, 65,536 addresses.