AS9706 PETISNET-AS BUSAN EDUCATION RESEARCH & INFORMATION INSTITUTE

AS9706 (PETISNET-AS-KR) is held by the Busan Education Research & Information Institute, the information-technology arm of the Busan Metropolitan Office of Education. It runs the education network that connects the city's schools and education offices, historically branded PETINET.

What it's used for

This is a regional school network, and the routing shows it. RIS sees only 8 IPv4 prefixes but 102,144 addresses, with no IPv6 and a single observed neighbour. That combination is distinctive: a very large address count delivered through one upstream and almost no deaggregation means a single administrative domain handing addresses out internally, not a provider selling connectivity. The blocks are clean, distinct allocations rather than scraped-together /24s: a full 211.182.0.0/16, a 210.180.128.0/18 with a separate /19, and a 211.43.32.0/19 with a few smaller pieces. Address space on that scale, held by an education office, is what it takes to give every school, classroom network and administrative office in a metropolitan area routable addresses, a design choice that dates from the era before NAT became the default in campus networks.

Notable

• The institute was formed in a 2004 merger of the Busan Metropolitan Education Science Research Institute and the Busan Office of Education's information centre, and its address-space registration in this range dates back to 1998.
• Beyond networking, it produces educational materials and runs research and teacher-training platforms for Busan schools.
• Some registry records in this space now carry a successor organisation name, so the holder's official title may have changed even though the network and the ASN have not.