Autonomous system
AS3926 FFX-CNTY
Unclassified ARIN
Summary
Fairfax County, Virginia
government legacy
FFX-CNTY is registered to the Fairfax County Department of Information Technology — the IT organisation for Fairfax County, Virginia, one of the largest and wealthiest counties in the Washington, D.C. suburbs.
What it's used for
- Local-government networking: county offices, public services, schools-adjacent systems, libraries, and public safety infrastructure.
Notable
- Unusual in scale for a county: this is a large allocation, reflecting a local government that serves over a million residents and runs its own substantial IT operation.
- Registered with ARIN in 1994 — very early for a municipal or county government, and a reminder that Northern Virginia was wired into the internet before most of the country.
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 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 69.63K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3926- Registry name
- FFX-CNTY
- Registrant
- Fairfax County Dept of Information Technology
- Abuse contact
- fnazar@fairfax.va.us
- Registered
- 1994-10-12
- Last changed
- 1994-10-12
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS3926
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 14 naming AS3926
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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