Autonomous system
AS21939 -Reserved AS-
Unclassified ARIN
Summary
Phillips Community College of the University of Arkansas
education ipv6 small
AS21939 is operated by Phillips Community College of the University of Arkansas.
What it's used for
- The address space carries IPv6 prefixes for a community college, with no IPv4 inventory announced.
- The AS announces 6 IPv6 prefixes and has 1 observed neighbour, indicating a small, isolated educational network rather than a transit or large access provider.
Notable
- The registry holder matches the operator identity, confirming the AS belongs to the college.
- The address inventory consists solely of IPv6 blocks, reflecting a modernized or IPv6-only deployment strategy for the 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
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.
| AS | Network | Paths seen |
|---|---|---|
| AS40581 | Arkansas Research and Education Optical Network | 64 |
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
IPv4 0 prefixes · 0 addresses IPv6 6 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21939- Registry name
- PCCUA-AS
- Registrant
- Phillips Community College of the University of Arkansas
- Abuse contact
- lwilliams@pccua.edu
- Registered
- 2025-08-26
- Last changed
- 2025-08-26
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS21939
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS21939
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 1,782 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