Autonomous System
AS4665 Yonsei University
EducationActiveSouth KoreaAPNIC
AS4665 (YONSEI-AS-KR-KR) is an education network operated by Yonsei University in South Korea, registered with APNIC. It has 33 IPv4 prefixes with 148,992 addresses, which makes it the 1,594th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses148,992in 33 prefixes
IPv6 prefixes0none
Size rank#1,594of 82,200 active ASNs
Details
OrganizationYonsei University
AS nameYONSEI-AS-KR-KR
Websiteyonsei.ac.kr
Country South Korea (KR)
Network typeEducation
RegistryAPNIC
Abuse contactirt@nic.or.kr
Registered—
Last updated2016-11-28
IPv4 prefixes
33 prefixes · 148,992 addresses| Network | Addresses | First – last address |
|---|---|---|
| 165.132.0.0/16 | 65,536 | 165.132.0.0 – 165.132.255.255 |
| 165.132.0.0/17 | 32,768 | 165.132.0.0 – 165.132.127.255 |
| 165.132.128.0/17 | 32,768 | 165.132.128.0 – 165.132.255.255 |
| 1.233.208.0/20 | 4,096 | 1.233.208.0 – 1.233.223.255 |
| 165.132.32.0/21 | 2,048 | 165.132.32.0 – 165.132.39.255 |
| 165.132.40.0/21 | 2,048 | 165.132.40.0 – 165.132.47.255 |
| 1.233.224.0/22 | 1,024 | 1.233.224.0 – 1.233.227.255 |
| 1.233.228.0/22 | 1,024 | 1.233.228.0 – 1.233.231.255 |
| 1.233.232.0/22 | 1,024 | 1.233.232.0 – 1.233.235.255 |
| 1.233.206.0/23 | 512 | 1.233.206.0 – 1.233.207.255 |
| 1.233.236.0/23 | 512 | 1.233.236.0 – 1.233.237.255 |
| 1.233.226.0/24 | 256 | 1.233.226.0 – 1.233.226.255 |
| 1.233.238.0/24 | 256 | 1.233.238.0 – 1.233.238.255 |
| 1.233.239.0/24 | 256 | 1.233.239.0 – 1.233.239.255 |
| 1.233.240.0/24 | 256 | 1.233.240.0 – 1.233.240.255 |
| 1.233.241.0/24 | 256 | 1.233.241.0 – 1.233.241.255 |
| 1.233.242.0/24 | 256 | 1.233.242.0 – 1.233.242.255 |
| 1.233.243.0/24 | 256 | 1.233.243.0 – 1.233.243.255 |
| 1.233.244.0/24 | 256 | 1.233.244.0 – 1.233.244.255 |
| 1.233.245.0/24 | 256 | 1.233.245.0 – 1.233.245.255 |
| 1.233.246.0/24 | 256 | 1.233.246.0 – 1.233.246.255 |
| 1.233.247.0/24 | 256 | 1.233.247.0 – 1.233.247.255 |
| 1.233.248.0/24 | 256 | 1.233.248.0 – 1.233.248.255 |
| 1.233.249.0/24 | 256 | 1.233.249.0 – 1.233.249.255 |
| 1.233.250.0/24 | 256 | 1.233.250.0 – 1.233.250.255 |
165.132.0.0/16 165.132.0.0/17 165.132.128.0/17 1.233.208.0/20 165.132.32.0/21 165.132.40.0/21 1.233.224.0/22 1.233.228.0/22 1.233.232.0/22 1.233.206.0/23 1.233.236.0/23 1.233.226.0/24 1.233.238.0/24 1.233.239.0/24 1.233.240.0/24 1.233.241.0/24 1.233.242.0/24 1.233.243.0/24 1.233.244.0/24 1.233.245.0/24 1.233.246.0/24 1.233.247.0/24 1.233.248.0/24 1.233.249.0/24 1.233.250.0/24
The 25 largest of 33. The API and the database have all of them.
IPv6 prefixes
No IPv6 prefixes.
Query AS4665 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS4665&key=YOUR_API_KEY"Any address in its prefixes resolves to AS4665, with or without a key:
curl "https://api.ipapi.is/?q=165.132.0.1"