Autonomous system
AS11863 PLU
Education ARIN
Summary
Pacific Lutheran University
education university legacy
PLU is Pacific Lutheran University, a private liberal-arts university in Parkland, Washington, just outside Tacoma. It runs a single-campus network on its own AS.
What it's used for
Campus connectivity. RIS observes one announced prefix, 152.117.0.0/20 (4,096 addresses), no IPv6, and two observed BGP neighbours. That is the classic shape of a small university: one contiguous block covering staff, student and lab space, and a pair of upstreams for redundancy rather than the wide peering fabric a transit network would show.
ARIN registers 152.117.0.0/20 as PLU to Pacific Lutheran University, so the announcer and the registrant are the same institution and the prefix-registrant check clears. Nothing in the inventory is scattered across RIRs, registered to unrelated parties, or otherwise suggestive of space being flown for someone else.
Notable
PLU is a three-letter handle that could plausibly belong to several things, and here it resolves to the obvious one, confirmed by the registrant org on the block itself rather than by the handle alone. That check matters in this AS range, where short handles frequently name something other than the institution they evoke.
Two addresses were sampled for reverse DNS and neither answered. Two out of 4,096 is a sample, not a finding, so no claim is made about the university's rDNS delegation in either direction.
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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 4.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11863- Registry name
- PLU
- Registrant
- Pacific Lutheran University
- Abuse contact
- netadmin@plu.edu
- Registered
- 1999-01-21
- Last changed
- 2015-05-12
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS11863
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 2 naming AS11863
Reputation
Classification and threat
Education University, school or national research and education network.
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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