Autonomous system
AS25829 SMITHSONIAN
Unclassified RIPE
Summary
Smithsonian Institution
business government research museum
The AS handle SMITHSONIAN is operated by the Smithsonian Institution.
What it's used for
- The address space carries internal corporate infrastructure for the Smithsonian Institution, as indicated by the consistent
SInetname across the majority of prefixes. - The AS announces 62,464 IPv4 addresses across 11 prefixes and 1 IPv6 prefix, while maintaining only 5 observed neighbours. This high address-to-neighbour ratio indicates an internal corporate estate with site-by-site segmentation rather than a transit or access network.
Notable
- Registrants for the primary 160.111.0.0/17 block and associated subnets are listed as Smithsonian Institution, aligning with the AS holder. One /24 prefix (38.127.143.0/24) is registered to Cogent Communications, LLC with the netname
COGENT-A, suggesting a specific leased or peering arrangement. - The inventory is dominated by the 160.111.0.0/17 block, which is subdivided into multiple smaller prefixes, reflecting a finely managed internal network structure.
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 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 11 prefixes · 62.46K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 12 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS25829- Registry name
- SMITHSONIAN
- Registrant
- Smithsonian Institution
- Abuse contact
- hargism@si.edu
- Registered
- 2002-05-16
- Last changed
- 2019-11-13
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS25829
- ASPA
- no ASPA record
- IRR
- 86% registered · 6 of 7 announcements
- Route objects
- 8 naming AS25829
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: 442 networks and 1,781 prefixes, as published 2026-10-16. 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