ASN AS25829 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS25829?

AS25829 is listed under Smithsonian Institution.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS25829 Smithsonian Institution

ASN Lookup Tool

Smithsonian Institution si.edu

US 7 Routes

AS Data

AS25829

AS25829 – Smithsonian Institution

AS Number	25829
AS Name	SMITHSONIAN
Organization	Smithsonian Institution(smiths-1)
Country	US
Website	si.edu
Number of IPv4 Routes	6
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	2002-05-16

ASN Intelligence API for production workflows

Use ASN data for AS25829 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
38.127.143.0/24	AS25829	Smithsonian Institution	Smithsonian Institution	256
2001:550:7708::/48	AS25829	Smithsonian Institution	Smithsonian Institution	~1×10²⁴
160.111.0.0/17	AS25829	Smithsonian Institution	Smithsonian Institution	32768
160.111.224.0/21	AS25829	Smithsonian Institution	Smithsonian Institution	2048
160.111.128.0/18	AS25829	Smithsonian Institution	Smithsonian Institution	16384
160.111.192.0/19	AS25829	Smithsonian Institution	Smithsonian Institution	8192
160.111.240.0/20	AS25829	Smithsonian Institution	Smithsonian Institution	4096

Raw Whois Response

#
# 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.
#


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:  +1-202-746-0443 
OrgAbuseEmail:  hargism@si.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3330-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

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

OrgAbuseHandle: ARINA71-ARIN
OrgAbuseName:   ARIN-Abuse
OrgAbusePhone:  +1-202-633-4100 
OrgAbuseEmail:  arin-abuse@si.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ARINA71-ARIN

RAbuseHandle: ABUSE3330-ARIN
RAbuseName:   Abuse-POC
RAbusePhone:  +1-202-746-0443 
RAbuseEmail:  hargism@si.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3330-ARIN

RAbuseHandle: ARINA71-ARIN
RAbuseName:   ARIN-Abuse
RAbusePhone:  +1-202-633-4100 
RAbuseEmail:  arin-abuse@si.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/ARINA71-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: HUSSE3-ARIN
RTechName:   Hussey, Chris 
RTechPhone:  +1-202-633-5075 
RTechEmail:  husseyc@si.edu
RTechRef:    https://rdap.arin.net/registry/entity/HUSSE3-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


#
# 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.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS11537	Internet2	US
AS11164	Internet2	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS27922	Smithsonian Tropical Research Institute	PA

Upstreams

AS Number	Description	Country
AS11537	Internet2	US
AS11164	Internet2	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS27922	Smithsonian Tropical Research Institute	PA

Contacts

Email Contacts

nguyent@si.edu johnstonjj@si.edu hargism@si.edu

Abuse Contacts

arin-abuse@si.edu