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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
	8.28.178.0/23	Northwestern University
	8.30.248.0/22	Level 3 Parent, LLC
	38.124.97.0/24	Cogent Communications, LLC
	129.105.0.0/16	Northwestern University
	165.124.0.0/17	Northwestern University
	165.124.17.0/24	Northwestern University
	165.124.128.0/19	Northwestern University
	165.124.149.0/24	Northwestern University
	165.124.160.0/20	Northwestern University
	165.124.176.0/21	Northwestern University
	165.124.184.0/23	Northwestern University
	165.124.186.0/24	Northwestern University
	165.124.192.0/19	Northwestern University
	165.124.224.0/21	Northwestern University
	165.124.232.0/22	Northwestern University
	165.124.240.0/20	Northwestern University
	192.5.143.0/24	Northwestern University
	192.26.85.0/24	Northwestern University
	192.26.86.0/23
	192.31.253.0/24	Northwestern University
	199.74.64.0/18	Northwestern University
	199.249.165.0/24	Northwestern University
	199.249.166.0/23	Northwestern University
	199.249.166.0/24	Northwestern University
	199.249.167.0/24	Northwestern University
	199.249.168.0/23	Northwestern University
	199.249.168.0/24	Northwestern University
	199.249.169.0/24	Northwestern University
	2620:10d:2000::/41	Northwestern University

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS396450	Internet2	✔	✘
	AS2381	WiscNet	✔	✔
	AS174	Cogent Communications, LLC	✔	✘
	AS3356	Lumen (Level 3)	✔	✔
	AS33491	Comcast Cable Communications, LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2381	WiscNet	✔	✔
	AS396450	Internet2	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS3356	Lumen (Level 3)	✔	✔
	AS33491	Comcast Cable Communications, LLC	✔	✘
	AS22335	Metropolitan Research and Education Network	✔	✔
	AS11164	Internet2 I2PX	✔	✘
	AS11537	Internet2	✔	✘
	AS293	ESnet	✔	✘

ASHandle:       AS103
OrgID:          NORTHW-9-Z
ASName:         NWU-AS
ASNumber:       103
RegDate:        1987-04-09
Updated:        2012-04-02
TechHandle:     NUNA-ARIN
AbuseHandle:    NUNS-ARIN
NOCHandle:      NUN-ARIN
Source:         ARIN



OrgID:          NORTHW-9-Z
OrgName:        Northwestern University
CanAllocate:    
Street:         Leverone Hall #G-166
Street:         2001 Sheridan Rd
City:           Evanston
State/Prov:     IL
Country:        US
PostalCode:     60208
RegDate:        2010-01-08
Updated:        2012-05-11
OrgAdminHandle: NTN7-ARIN
OrgTechHandle:  NUNA-ARIN
OrgAbuseHandle: NUNS-ARIN
Source:         ARIN





OrgAdminHandle:       NTN7-ARIN
OrgAdminName:         NUIT TNS
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NUNA-ARIN
OrgTechName:           Northwestern University Network Administration
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NUNS-ARIN
OrgAbuseName:          Northwestern University Network Security
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           NUNA-ARIN
TechName:              Northwestern University Network Administration
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          NUNS-ARIN
AbuseName:             Northwestern University Network Security
# Email removed, Log into bgp.tools to see whois emails


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

Last Update: 2026-05-07T03:35:56Z UTC

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Member of the following AS-SETs

-	Member
RADB	as-startapeu
RADB	as-startapcn
RADB	as-startapme
RADB	as-wiscnet-wrips
RADB	as6325:as-icn-university
RADB	as6325:as-icn-highered
LEVEL3	as-level3-origins-na
RIPE	as-gblx
LEVEL3	as-lumen-customers-asns
RADB	as-comcast-edia
RADB	as198949:as-sd
RADB	as-summit
RADB	as-startapla
RADB	as22335:as-customers
RADB	as-hurricane
RADB	as23314:as-all
RADB	as-icn-customers
RADB	as-startapca
RADB	as-startapap
RADB	as-hurricanev6
RADB	as-wiscnet-cdn
RIPE	as-transroute-spec
ARIN	as-zenedge
RADB	as103:as-all
RADB	as3676:as-uiowa-peers-announce-cust
RADB	as-startapru