AS3713 — ICFCONSULTINGGROUPINC

AS3713 announces 1 IPv4 prefixes covering 4,096 addresses and 2 IPv6 prefixes.

About this network

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 199.223.16.0/21 and 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.

Announced prefixes

• 199.223.16.0/20
• 2604:d800:1001::/48
• 2620:7b:b000::/48

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS20355 REV
• AS393423 NTT Global Data Centers Americas, INC.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS20355 REV
• AS393423 NTT Global Data Centers Americas, INC.