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	Prefix	Description
	38.127.143.0/24	Smithsonian Institution
	160.111.0.0/17	Smithsonian Institution
	160.111.128.0/18	Smithsonian Institution
	160.111.192.0/19	Smithsonian Institution
	160.111.224.0/21	Smithsonian Institution
	160.111.240.0/20	Smithsonian Institution
	2001:550:7708::/48	Cogent Communications, LLC

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS174	Cogent Communications, LLC	✔	✔
	AS3356	Lumen (Level 3)	✔	✘
	AS11164	Internet2 I2PX	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS174	Cogent Communications, LLC	✔	✔
	AS3356	Lumen (Level 3)	✔	✘
	AS27922	Smithsonian Tropical Research Institute	✔	✘
	AS11164	Internet2 I2PX	✔	✘
	AS11537	Internet2	✔	✘
	AS1239	Sprint Wireline (Cogent)	✘	✔

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Downstreams

	ASN	Description	IPv4	IPv6
	AS27922	Smithsonian Tropical Research Institute	✔	✘

ASHandle:       AS25829
OrgID:          SMITHS-1
ASName:         SMITHSONIAN
ASNumber:       25829
RegDate:        2002-05-16
Updated:        2019-11-13
TechHandle:     HUSSE3-ARIN
TechHandle:     TECHN1091-ARIN
TechHandle:     TNN2-ARIN
AbuseHandle:    ABUSE3330-ARIN
AbuseHandle:    ARINA71-ARIN
NOCHandle:      ARINN5-ARIN
Source:         ARIN



OrgID:          SMITHS-1
OrgName:        Smithsonian Institution
CanAllocate:    
Street:         600 Maryland Ave SW
Street:         Suite 4040
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20024
Comment:        NOC hours are 24/7 - all days except Dec 25th.
RegDate:        1992-05-28
Updated:        2014-01-02
OrgAdminHandle: TNN2-ARIN
OrgTechHandle:  TECHN1091-ARIN
OrgTechHandle:  TNN2-ARIN
OrgAbuseHandle: ABUSE3330-ARIN
OrgAbuseHandle: ARINA71-ARIN
OrgNOCHandle:   ARINN5-ARIN
Source:         ARIN





OrgAdminHandle:       TNN2-ARIN
OrgAdminName:         Tran Nguyen
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        TECHN1091-ARIN
OrgTechName:           Technical POC
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        TNN2-ARIN
OrgTechName:          Tran Nguyen
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE3330-ARIN
OrgAbuseName:          Abuse-POC
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ARINA71-ARIN
OrgAbuseName:          ARIN-Abuse
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         ARINN5-ARIN
OrgNOCName:            ARIN-NOC
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           HUSSE3-ARIN
TechName:             Chris Hussey
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           TECHN1091-ARIN
TechName:              Technical POC
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           TNN2-ARIN
TechName:             Tran Nguyen
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          ABUSE3330-ARIN
AbuseName:             Abuse-POC
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          ARINA71-ARIN
AbuseName:             ARIN-Abuse
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            ARINN5-ARIN
NOCName:               ARIN-NOC
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-12-24T03:27:59Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-as209-cust	1818
LEVEL3	as-lumen-customers-asns	10695
RADB	as-flrnet-connectors	67
RADB	as-smithsonian	3
RADB	as10886:as-all	68
RADB	as-flrnet-aggregate	105
ARIN	as-flrnet-connectors	67
RADB	as-nwn-transit	2049