AS9903 RIT-AS-AP Rajamangala Institute of Technology

AS9903 (RIT-AS-AP) is registered to the Rajamangala Institute of Technology in Pathum Thani, Thailand. The institute was elevated to university status in 2005 and split into the nine-campus Rajamangala University of Technology system; the ASN and its address space were never re-registered, so the handle still carries the pre-2005 name. The space is used by the Thanyaburi campus network and its sister institutions.

What it's used for

Campus networking for a Thai state university system. RIS sees 46 IPv4 prefixes totalling 12,800 addresses and no IPv6, with only 2 observed BGP neighbours. That shape is characteristic of a university edge network rather than any kind of carrier: a modest, fixed address pool reached through one or two upstream providers, in this case Thailand's academic and commercial transit. The announcement pattern is telling too. The block is anchored on two aggregates, 203.158.96.0/19 and 203.158.240.0/20, but is then deaggregated into dozens of individual /24s. That is the classic signature of a multi-campus institution handing one /24 per faculty, campus or building out of a single institutional allocation, with each site announced separately for internal traffic engineering.

Notable

• The address space sits in 203.158.0.0/16 and 202.44.0.0/16, both APNIC ranges long associated with Thai education and research networking.
• The registry handle is a fossil. Cards and geolocation databases that read the org name literally will still report a defunct "Institute of Technology".
• No IPv6 is announced from this ASN, which is unusual for a national university system today.