Autonomous system
AS6150 NCIFCRF - National Cancer Institute
Unclassified ARIN
Summary
National Cancer Institute
government research legacy
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. 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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3527 | National Institutes of Health | 63 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6150- Registry name
- NCIFCRF
- Registrant
- National Cancer Institute
- Abuse contact
- natasha.freeman@nih.gov
- Registered
- 1995-12-08
- Last changed
- 2024-12-19
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- National Cancer Institute
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS6150
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS6150
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: 453 networks and 1,854 prefixes, as published 2026-11-06. 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