Autonomous system
AS3713 ICFCONSULTINGGROUPINC - ICF International
Unclassified ARIN
Summary
ICF International
enterprise legacy
The corporate network of ICF International (ICFCONSULTINGGROUPINC), a global consulting and technology services firm headquartered in Reston, Virginia.
What it's used for
- Corporate connectivity and hosting for ICF's own systems and client-facing services; the AS announces a contiguous run of
199.223.16.0/21and its more-specifics.
Notable
- An enterprise network, not a service provider: the address space serves one company's staff, offices, and applications rather than paying subscribers.
- ICF works heavily with US federal, state, and commercial clients across energy, environment, health, and public-policy programs.
Interesting
- The AS number dates from the mid-1990s, when the company was known as ICF Consulting Group — the registry handle still carries that older name even though the holder rebranded to ICF International.
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 2026-11-07, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 4.10K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3713- Registry name
- ICFCONSULTINGGROUPINC
- Registrant
- ICF International
- Abuse contact
- arin@icfi.com
- Registered
- 1994-07-13
- Last changed
- 2014-01-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 19 with no ROA
- ROAs
- 0 authorising AS3713
- ASPA
- no ASPA record
- IRR
- 95% registered · 18 of 19 announcements
- Route objects
- 6 naming AS3713
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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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