25829 SMITHSONIAN - Smithsonian Institution, US
Adjacency: 4 Upstream: 3 Downstream: 1
Upstream Adjacent AS list
AS11537 INTERNET2-RESEARCH-EDU - Internet2, US
AS11164 INTERNET2-I2PX - Internet2, US
AS174 COGENT-174 - Cogent Communications, LLC, US
Downstream Adjacent AS list
AS27922 Smithsonian Tropical Research Institute, PA
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 3934 AS25829 ORG+TRN Originate: 63744 /16.04 Transit: 3328 /20.30 SMITHSONIAN - Smithsonian Institution, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 36883 AS25829 SMITHSONIAN - Smithsonian Institution, US 6 0 0 6 0 0.00% Prefix AS Path Aggregation Suggestion 38.127.143.0/24 4777 2497 11164 25829 160.111.0.0/17 4777 2497 11164 25829 160.111.128.0/18 4777 2497 11164 25829 160.111.192.0/19 4777 2497 11164 25829 160.111.224.0/21 4777 2497 11164 25829 160.111.240.0/20 4777 2497 11164 25829
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS25829 6 More Specifics 6 Total Advertisements SMITHSONIAN - Smithsonian Institution, US
38.127.143.0/24 38.0.0.0/8
160.111.0.0/17 160.111.0.0/16
160.111.128.0/18 160.111.0.0/16
160.111.192.0/19 160.111.0.0/16
160.111.224.0/21 160.111.0.0/16
160.111.240.0/20 160.111.0.0/16
whois: 402332
IANA has recorded AS25829 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS25829\n
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 25829
ASName: SMITHSONIAN
ASHandle: AS25829
RegDate: 2002-05-16
Updated: 2019-11-13
Ref: https://rdap.arin.net/registry/autnum/25829
OrgName: Smithsonian Institution
OrgId: SMITHS-1
Address: 600 Maryland Ave SW
Address: Suite 4040
City: Washington
StateProv: DC
PostalCode: 20024
Country: US
RegDate: 1992-05-28
Updated: 2014-01-02
Comment: NOC hours are 24/7 - all days except Dec 25th.
Ref: https://rdap.arin.net/registry/entity/SMITHS-1
OrgAbuseHandle: ABUSE3330-ARIN
OrgAbuseName: Abuse-POC
OrgAbusePhone: +1-202-633-0611
OrgAbuseEmail: hargism@si.edu
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE3330-ARIN
OrgNOCHandle: ARINN5-ARIN
OrgNOCName: ARIN-NOC
OrgNOCPhone: +1-202-633-4100
OrgNOCEmail: ocio-noc@si.edu
OrgNOCRef: https://rdap.arin.net/registry/entity/ARINN5-ARIN
OrgTechHandle: TECHN1091-ARIN
OrgTechName: Technical POC
OrgTechPhone: +1-202-633-2715
OrgTechEmail: johnstonjj@si.edu
OrgTechRef: https://rdap.arin.net/registry/entity/TECHN1091-ARIN
OrgTechHandle: TNN2-ARIN
OrgTechName: Nguyen, Tran Ngoc
OrgTechPhone: +1-202-312-2881
OrgTechEmail: nguyent@si.edu
OrgTechRef: https://rdap.arin.net/registry/entity/TNN2-ARIN
OrgAbuseHandle: ARINA71-ARIN
OrgAbuseName: ARIN-Abuse
OrgAbusePhone: +1-202-633-4100
OrgAbuseEmail: ocio-noc@si.edu
OrgAbuseRef: https://rdap.arin.net/registry/entity/ARINA71-ARIN
RAbuseHandle: ARINA71-ARIN
RAbuseName: ARIN-Abuse
RAbusePhone: +1-202-633-4100
RAbuseEmail: ocio-noc@si.edu
RAbuseRef: https://rdap.arin.net/registry/entity/ARINA71-ARIN
RTechHandle: HUSSE3-ARIN
RTechName: Hussey, Chris
RTechPhone: +1-202-633-5075
RTechEmail: husseyc@si.edu
RTechRef: https://rdap.arin.net/registry/entity/HUSSE3-ARIN
RNOCHandle: ARINN5-ARIN
RNOCName: ARIN-NOC
RNOCPhone: +1-202-633-4100
RNOCEmail: ocio-noc@si.edu
RNOCRef: https://rdap.arin.net/registry/entity/ARINN5-ARIN
RTechHandle: TECHN1091-ARIN
RTechName: Technical POC
RTechPhone: +1-202-633-2715
RTechEmail: johnstonjj@si.edu
RTechRef: https://rdap.arin.net/registry/entity/TECHN1091-ARIN
RTechHandle: TNN2-ARIN
RTechName: Nguyen, Tran Ngoc
RTechPhone: +1-202-312-2881
RTechEmail: nguyent@si.edu
RTechRef: https://rdap.arin.net/registry/entity/TNN2-ARIN
RAbuseHandle: ABUSE3330-ARIN
RAbuseName: Abuse-POC
RAbusePhone: +1-202-633-0611
RAbuseEmail: hargism@si.edu
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE3330-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#