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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	65.112.0.0/20	Harvard University
	67.134.204.0/22	Harvard University
	128.103.0.0/16	Harvard University
	131.142.0.0/16	Smithsonian Astrophysical Observatory
	140.247.0.0/16	Harvard University
	140.247.111.0/24	Harvard University
	140.247.152.0/24	Harvard University
	140.247.174.0/24	Harvard University
	140.247.236.0/24	Harvard University
	192.5.66.0/24	Harvard University
	192.54.223.0/24	Harvard University
	192.131.102.0/24	Harvard University
	199.94.60.0/22	Harvard University
	2602:fca9::/36	Harvard University
	2607:fb60::/32	Harvard University
	2607:fb60:2404::/46	Harvard University
	2620:32:8000::/48	Smithsonian Astrophysical Observatory

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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)	✔	✔
	AS10578	Harvard University	✔	✔
	AS11164	Internet2 I2PX	✘	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS174	Cogent Communications, LLC	✔	✔
	AS40127	Longwood Medical and Academic Area (LMA)	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS13315	Harvard Business School	✔	✘
	AS10578	Harvard University	✔	✔
	AS11164	Internet2 I2PX	✔	✔
	AS11537	Internet2	✔	✔
	AS1239	Sprint Wireline (Cogent)	✔	✘
	AS396450	Internet2	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS40127	Longwood Medical and Academic Area (LMA)	✔	✔
	AS13315	Harvard Business School	✔	✘

ASHandle:       AS1742
OrgID:          HARVAR-Z
ASName:         HARVARD-UNIV
ASNumber:       1742
RegDate:        1992-02-19
Updated:        2023-12-21
TechHandle:     DASHB-ARIN
TechHandle:     PMC277-ARIN
AbuseHandle:    ABUSE3331-ARIN
NOCHandle:      NETWO4930-ARIN
Source:         ARIN



OrgID:          HARVAR-Z
OrgName:        Harvard University
CanAllocate:    
Street:         HUIT Network Services
Street:         Patrick McEvilly - Director
Street:         784 Memorial Drive
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139
RegDate:        2023-08-16
Updated:        2024-07-01
OrgAdminHandle: PMC277-ARIN
OrgTechHandle:  DASHB-ARIN
OrgTechHandle:  KENNY32-ARIN
OrgTechHandle:  PMC277-ARIN
OrgAbuseHandle: ABUSE3331-ARIN
OrgAbuseHandle: PMC277-ARIN
OrgNOCHandle:   NETWO4930-ARIN
OrgNOCHandle:   PMC277-ARIN
OrgRoutingHandle:   KENNY32-ARIN
OrgRoutingHandle:   PMC277-ARIN
OrgDNSHandle:   DASHB-ARIN
OrgDNSHandle:   PMC277-ARIN
Source:         ARIN





OrgAdminHandle:       PMC277-ARIN
OrgAdminName:         Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        DASHB-ARIN
OrgTechName:          Benjamin Dash
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        KENNY32-ARIN
OrgTechName:          Eric Kenny
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        PMC277-ARIN
OrgTechName:          Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE3331-ARIN
OrgAbuseName:          Abuse
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       PMC277-ARIN
OrgAbuseName:         Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NETWO4930-ARIN
OrgNOCName:            Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         PMC277-ARIN
OrgNOCName:           Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     KENNY32-ARIN
OrgRoutingName:       Eric Kenny
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     PMC277-ARIN
OrgRoutingName:       Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         DASHB-ARIN
OrgDNSName:           Benjamin Dash
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         PMC277-ARIN
OrgDNSName:           Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           DASHB-ARIN
TechName:             Benjamin Dash
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           PMC277-ARIN
TechName:             Patrick Mcevilly
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          ABUSE3331-ARIN
AbuseName:             Abuse
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            NETWO4930-ARIN
NOCName:               Network Operations
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-05-07T03:38:53Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-ctbc-customers218	48
RADB	as10578:as-harvard	5
RADB	as174:as-cogc-007	10
RADB	as-harv	8
RADB	as11537:as-participants	1846
RADB	as198949:as-sd	3446
LEVEL3	as-lumen-customers-asns	10695
RADB	as11164:as-participants	1830
LEVEL3	as-as209-cust	1818