asn.dev

Autonomous system

AS22247 LETOURNEAUUNIVERSITY

Unclassified ARIN

IPv4 addresses 4.10K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

LeTourneau University

United States of America · AI-generated

education university private texas

LETOURNEAUUNIVERSITY is the autonomous system for LeTourneau University, a private Christian university in Longview,

What it's used for

  • The space carries university infrastructure, evidenced by reverse DNS entries like longview-68-0-letu.edu and the netname LETNET.
  • The AS announces 4096 IPv4 addresses within a single prefix (66.185.64.0/20) and maintains only 1 observed neighbour, indicating a small, self-contained educational network rather than a transit provider.

Notable

  • The RDAP registrant LeTourneau University aligns perfectly with the AS handle and the reverse DNS suffix letu.edu.
  • The address inventory consists of a single contiguous /20 block, typical for a campus network that does not require complex multi-homing or large-scale address aggregation.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS23158ETEX COMMUNICATIONS, LLC65

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 · 4.10K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS22247
Registry name
LETOURNEAUUNIVERSITY
Registrant
LeTourneau University
Abuse contact
abuse@letu.edu
Registered
2001-08-24
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS22247
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS22247

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 1,781 prefixes, as published 2026-10-16. 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