Autonomous system
AS27676 ALMA - Atacama Large Millimeter Array
Unclassified LACNIC
Summary
ALMA
science research infrastructure chile
AS27676 is operated by ALMA (Atacama Large Millimeter Array).
What it's used for
- The address space carries infrastructure for the Atacama Large Millimeter/submillimeter Array, a major astronomical observatory in northern Chile.
- The AS announces 2304 IPv4 addresses across 4 prefixes, with 4 observed neighbours, indicating a dedicated research network rather than a transit or access provider.
Notable
- Registrants for the 200.2.0.0/22, 200.2.4.0/23, and 200.2.6.0/23 prefixes are listed as "ALMA - Atacama Large Millimeter Array", while the 139.229.132.0/24 prefix is registered to "NSF'S NOIRLAB" with netname "CTIO".
- The address inventory is concentrated in the 200.2.0.0/22 block, with a single /24 from a different range.
CLASSIFICATION - after the card, on its own final line, emit exactly:
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 4 prefixes · 2.30K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CL | Chile | 4 |
Registry
Allocation record
- Registry
- LACNIC
- Registered
- 2004-11-24
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS27676
- ASPA
- no ASPA record
- IRR
- 88% registered · 7 of 8 announcements
- Route objects
- 5 naming AS27676
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 1,775 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