Autonomous system
AS19226 AURA-SOUTH
Unclassified ARIN
Summary
NSF NOIRLab
research astronomy government infrastructure
AURA-SOUTH is the autonomous system for NSF NOIRLab, the National Optical-Infrared Astronomy Research Laboratory.
What it's used for
- The address space carries infrastructure for the National Optical-Infrared Astronomy Research Laboratory, with all prefixes registered under the netname
CTIO(Cerro Tololo Inter-American Observatory). - The AS announces 65,280 IPv4 addresses across 8 prefixes and maintains only 2 observed neighbours, indicating a dedicated research network rather than a transit or access provider.
Notable
- All registrants for the announced prefixes are listed as
NSF'S NOIRLAB, consistent with the AS holder. - NOIRLab was formed in 2019 through the merger of the Association of Universities for Research in Astronomy (AURA) and the National Optical Astronomy Observatory (NOAO).
- The inventory consists of a single contiguous block within 139.229.0.0/16, subdivided into eight prefixes ranging from /17 to /24.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS20080 | Florida International University | 62 |
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 · 65.28K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Registered
- 2000-12-06
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS19226
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS19226
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: 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