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	Prefix	Description
	128.135.0.0/16	The University of Chicago
	192.5.85.0/24	The University of Chicago
	192.170.192.0/19	The University of Chicago
	192.170.224.0/19	The University of Chicago
	198.177.153.0/24	The University of Chicago
	205.208.0.0/17	The University of Chicago
	2605:9a00::/48	The University of Chicago
	2605:9a00:10::/48	The University of Chicago

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS3356	Lumen (Level 3)	✔	✔
	AS174	Cogent Communications, LLC	✔	✔
	AS11164	Internet2 I2PX	✔	✔
	AS2381	WiscNet	✘	✔

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Peers

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

ASHandle:       AS160
OrgID:          UNIVER-174-Z
ASName:         U-CHICAGO-AS
ASNumber:       160
RegDate:        1988-02-25
Updated:        2023-12-05
TechHandle:     DNO22-ARIN
Source:         ARIN



OrgID:          UNIVER-174-Z
OrgName:        The University of Chicago
CanAllocate:    
Street:         1155 E. 60th Street
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60637
RegDate:        2023-02-27
Updated:        2023-04-19
OrgAdminHandle: DOMAI99-ARIN
OrgTechHandle:  DOMAI99-ARIN
OrgAbuseHandle: NSC26-ARIN
OrgNOCHandle:   DNO22-ARIN
Source:         ARIN





OrgAdminHandle:       DOMAI99-ARIN
OrgAdminName:          Domain Administrator
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        DOMAI99-ARIN
OrgTechName:           Domain Administrator
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NSC26-ARIN
OrgAbuseName:          Network Security Center
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         DNO22-ARIN
OrgNOCName:            Data Network Operations
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           DNO22-ARIN
TechName:              Data Network Operations
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-12-24T03:29:47Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as198949:as-sd	3765
RADB	as-wiscnet-wrips	486
ARIN	as-zenedge	2306
RADB	as3676:as-uiowa-peers-announce-cust	20
LEVEL3	as-lumen-customers-asns	10695
RADB	as-startapcn	84
RADB	as-startapru	64
RADB	as-uchicago	1
RADB	as-startapeu	47
RADB	as22335:as-customers	82
RIPE	as-transroute-spec	19683
RADB	as-startapla	61
RADB	as-startapap	79
RADB	as-startapme	84
RADB	as-startapca	81