asn.dev

Autonomous system

AS17234 GAC

Unclassified ARIN

IPv4 addresses 65.54K 1 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Gustavus Adolphus College

United States of America · AI-generated

education business us

GAC is the autonomous system for Gustavus Adolphus College.

What it's used for

  • The space carries the college's internal network, identified by the netname GACNET and registrant Gustavus Adolphus College.
  • The AS announces 65536 IPv4 addresses and 2 IPv6 prefixes with only 2 observed neighbours, a ratio consistent with a small, self-contained institutional network rather than a transit provider.

Notable

  • The RDAP registrant Gustavus Adolphus College matches the AS handle and registry holder, confirming direct ownership.
  • The address inventory consists of a single contiguous IPv4 block, 138.236.0.0/16, alongside two IPv6 prefixes, 2606:8fc0::/32 and 2620:46:8000::/48.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS12042Fidium82
AS57University of Minnesota59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 65.54K addresses IPv6 2 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS17234
Registry name
GAC
Registrant
Gustavus Adolphus College
Abuse contact
hostmaster@gac.edu
Registered
2006-02-15
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS17234
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS17234

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: 447 networks and 1,852 prefixes, as published 2026-10-27. 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

Cross-check