Autonomous system
AS3839 ERX-CHULANET Chulalongkorn University
Education APNIC
Summary
Chulalongkorn University
education research legacy
Chulalongkorn University (ERX-CHULANET), Thailand's oldest university, located in Bangkok.
What it's used for
- Campus networking for students, faculty, and administration, plus research and library systems.
- Roughly 66,000 IPv4 addresses — a large allocation reflecting a major national university with many faculties and affiliated institutes.
Notable
- This is an institutional network: addresses belong to campus buildings, labs, dorms, and university services rather than to paying ISP subscribers.
- Chulalongkorn has long been central to Thai internet development, and its network was among the country's first connections.
Interesting
- The
ERX-prefix on the handle marks it as a record moved into APNIC's database by the Early Registration Transfer project, which relocated early registrations to the regional registry that actually covers the holder. The registration predates the current RIR structure.
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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 66.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| TH | Thailand | 4 |
Registry
Allocation record
- Registry
- APNIC
- Registered
- 2002-08-01
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 13% valid · 1 valid, 7 with no ROA
- ROAs
- 2 authorising AS3839
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 523 naming AS3839
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 1,775 prefixes, as published 2026-10-11. 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