AS9640 is the autonomous system of Korea Internet Security Agency. It holds 1,536 IPv4 addresses in 5 prefixes, mainly in 
South Korea.
By IPv4 addresses the network ranks #27,101 worldwide and #439 of 870 networks in South Korea.
The network spreads across 2 countries: South Korea 67%, Japan 33%.
The largest block is 218.37.128.0 to 218.37.129.255 with 512 addresses, geolocated to Chiyoda City.
- IPv4 addresses
- 1,536
- IPv4 prefixes
- 5
- World rank
- #27,101
Addresses by country
- South Korea 67%
Japan 33%
Largest blocks
- 218.37.128.0 Chiyoda City512
- 192.203.140.0 Naju (Jinheung-gil)256
- 192.132.247.0 Naju (Jinheung-gil)256
- 192.5.90.0 Naju (Jinheung-gil)256
- 180.222.220.0 Naju (Jinheung-gil)256
Networks of similar size
1,536
1,536
1,536
1,536
1,536IPv4 prefixes
Questions and answers
Who owns AS9640?
Autonomous system AS9640 is operated by Korea Internet Security Agency.
How many IP addresses does AS9640 have?
The network holds 1,536 IPv4 addresses in 5 prefixes.
Which country is AS9640 in?
The main country is South Korea, with addresses in 1 more countries.
How big is AS9640?
By IPv4 addresses it ranks #27,101 worldwide.
What is the largest address block of AS9640?
218.37.128.0 to 218.37.129.255, 512 addresses.