AS6150 — NCIFCRF

AS6150 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

NCIFCRF is the National Cancer Institute's autonomous system, named for the Frederick Cancer Research Facility in Frederick, Maryland. NCI is part of the US National Institutes of Health.

What it's used for

• Network connectivity for federal cancer research computing: laboratory systems, scientific data services and campus infrastructure at the Frederick site.
• The AS announces a single 129.43.0.0/16, a full Class B, which is its entire routed footprint.

Notable

• A government research network address, not a commercial one. Address space here backs federally funded biomedical research, and traffic is institutional rather than consumer.
• ARIN's registration for the ASN dates to 1995, consistent with a genuine mid-1990s allocation to a federal research campus rather than a recycled number.

Interesting

• Announcing exactly one /16 and nothing else is a distinctly old-school shape. Networks of this era were handed a Class B and simply never needed to fragment it.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 129.43.0.0/16

Upstream networks

• AS3527 National Institutes of Health

Adjacent networks

• AS3527 National Institutes of Health