Autonomous system
AS9903 RIT-AS-AP Rajamangala Institute of Technology
Education APNIC
Summary
Rajamangala University of Technology (RIT)
education university legacy
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
203.158.0.0/16and202.44.0.0/16, 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.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 11.52K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| TH | Thailand | 8 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9903- Registry name
- RIT-AS-AP
- Registrant
- Internet Thailand Company Ltd.
- Abuse contact
- op-network@inet.co.th
- Registered
- 2008-09-04
- Last changed
- 2020-11-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 46 valid, 0 with no ROA
- ROAs
- 50 authorising AS9903
- ASPA
- no ASPA record
- IRR
- 100% registered · 46 of 46 announcements
- Route objects
- 103 naming AS9903
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere