asn.dev

Autonomous system

AS31975 SEWANEE

Unclassified ARIN

IPv4 addresses 16.38K 6 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

University of the South

United States of America · AI-generated

education university tennessee episcopal

SEWANEE is the autonomous system for University of the South, a private Episcopal liberal arts college in Sewanee, Tennessee.

What it's used for

  • The address space is entirely registered under the netname SEWANEE with the registrant University of the South, indicating a single-tenant institutional network.
  • The AS announces 16,384 IPv4 addresses across 10 prefixes and maintains only 2 observed neighbours, a ratio characteristic of an access or eyeball network serving on-campus users rather than a transit provider.

Notable

  • All 10 announced prefixes share the same registrant, University of the South, and netname, SEWANEE, confirming consistent ownership and management of the inventory.
  • The address inventory is a contiguous block within the 152.97.0.0/16 range, subdivided into 10 prefixes ranging from /19 to /24, reflecting internal segmentation of the university's network estate.

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
AS21766BEN LOMAND RURAL TELEPHONE COOPERATIVE, INC.218
AS7018AT&T Enterprises, LLC84

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, 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 6 prefixes · 16.38K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS31975
Registry name
SEWANEE
Registrant
University of the South
Abuse contact
mguyear@sewanee.edu
Registered
2004-02-03
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS31975
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
4 naming AS31975

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 1,779 prefixes, as published 2026-10-22. 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