Autonomous system
AS13501 OARNET-AS-2
Unclassified ARIN
Summary
OARnet
research education infrastructure
A switch that names its own link speed, and a supercomputer centre's development database answering in public DNS.
What it's used for
- A state research and education network. 1,536 addresses across five IPv4 prefixes, two observed BGP neighbours, and no IPv6 announced.
Notable
- Four prefixes are netname
OAR-BLK4, registered to the network with an operations centre contact. 192.157.5.0/24is netnameOSC2, registered to a supercomputer centre.- One sampled address answers as
spine-800g-02-vlan100-v0.infra.osc.edu. - Another answers as
c4n-db-dev.hpc.osc.edu. - First seen in the routing archive on 2001-06-28, an actual date rather than the archive's start.
Interesting
- That first name is a full equipment description: the switch's role in the fabric, its port speed in gigabits, which unit it is, and the virtual network the address belongs to. Research networks name devices for the operators who work on them, and the result is a public inventory of the hardware.
- The second name marks a development database on the high performance computing side. Development systems reachable by name from outside are ordinary in research computing and would be a finding anywhere else.
- A research network announcing a supercomputer centre's own block is the usual division: the network carries the routes, the centre keeps its own registry record and its own naming.
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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13501- Registry name
- OARNET-AS-2
- Registrant
- OARnet
- Abuse contact
- support@oar.net
- Registered
- 1999-06-21
- Last changed
- 2014-09-18
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS13501
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 18 naming AS13501
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 442 networks and 1,783 prefixes, as published 2026-10-20. 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