asn.dev

Autonomous system

AS19923 SHENANDOAH-UNIV - Shenandoah University

Unclassified ARIN

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Shenandoah University

United States of America · AI-generated

education business university

The AS handle SHENANDOAH-UNIV is held by Shenandoah University.

What it's used for

  • The address space carries the university's internal network, identified by the netname SU1 and registrant Shenandoah University.
  • The inventory consists of a single IPv4 prefix, 204.154.80.0/21, totaling 2048 addresses, with 0 IPv6 prefixes announced.
  • With only 2 observed neighbours, the low neighbour count relative to the address block indicates a direct connection or small-scale transit arrangement typical of an institutional network rather than a large-scale transit provider.

Notable

  • The RDAP registrant Shenandoah University matches the registry holder and the AS handle, confirming consistent ownership.
  • The address inventory is a single contiguous /21 block, representing a standard allocation for a mid-sized educational institution.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4922Shenandoah Cable Television LLC380
AS21508Comcast Cable Communications, LLC85

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-04, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19923
Registry name
SHENANDOAH-UNIV
Registrant
Shenandoah University
Abuse contact
dfox2@su.edu
Registered
2001-03-02
Last changed
2025-11-12
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 8 with no ROA
ROAs
0 authorising AS19923
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
2 naming AS19923

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: 453 networks and 1,853 prefixes, as published 2026-11-05. 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