Autonomous system
AS43 BNL-AS
Unclassified ARIN
Summary
Brookhaven National Laboratory
government research legacy
An early low-numbered allocation (BNL-AS) serving Brookhaven National Laboratory, a US Department of Energy national laboratory in Upton, New York.
What it's used for
- Scientific, research, and operational networking for a DOE national lab.
Notable
- A US government / national-lab network, not a commercial ISP or host.
- The low AS number reflects an allocation from the internet's earliest years.
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 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS293 | ESnet | 454 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 · 66.56K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS43- Registry name
- BNL-AS
- Registrant
- Brookhaven National Laboratory
- Abuse contact
- amartinso@bnl.gov
- Registered
- 1985-04-11
- Last changed
- 2024-12-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 13% valid · 1 valid, 7 with no ROA
- ROAs
- 1 authorising AS43
- ASPA
- 1 declared providers
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 8 naming AS43
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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