Autonomous system
AS21984 FCPS
Unclassified ARIN
Summary
Fairfax County Public Schools
education k12 network us
FCPS is the autonomous system for Fairfax County Public Schools.
What it's used for
- The address space carries the network infrastructure for the Fairfax County Public Schools district, as indicated by the consistent
FCPSnetname and registrant across all prefixes. - The AS announces 65,536 IPv4 addresses across 8 prefixes with only 2 observed neighbours, a ratio that implies an access or internal network role rather than transit.
Notable
- All registrants agree with the announcer, with every prefix registered to Fairfax County Public Schools under the netname FCPS.
- The address inventory is finely subdivided into eight prefixes ranging from /17 to /23, suggesting site-by-site segmentation within the school district's internal 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
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 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21984- Registry name
- FCPS
- Registrant
- Fairfax County Public Schools
- Abuse contact
- DataSecurity@fcps.edu
- Registered
- 2001-07-20
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 6 with no ROA
- ROAs
- 0 authorising AS21984
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 4 naming AS21984
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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