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	Prefix	Description
	64.107.48.0/24	Illinois Century Network
	165.68.0.0/17	The University of Chicago
	165.68.0.0/16	The University of Chicago
	165.68.128.0/17	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
	AS32787	Akamai (Prolexic)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS6325	Illinois Century Network	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS6325	Illinois Century Network	✔	✘

ASHandle:       AS29885
OrgID:          UCHHS
ASName:         UCHHS-AS
ASNumber:       29885
RegDate:        2003-05-29
Updated:        2012-03-02
Source:         ARIN



OrgID:          UCHHS
OrgName:        Univeristy of Chicago Hospitals & Health System
CanAllocate:    
Street:         7955 South Cass Avenue
City:           Darien
State/Prov:     IL
Country:        US
PostalCode:     60651
RegDate:        2003-04-24
Updated:        2025-12-08
OrgAdminHandle: GRAML9-ARIN
OrgTechHandle:  GRAML9-ARIN
OrgAbuseHandle: GRAML9-ARIN
Source:         ARIN





OrgAdminHandle:       GRAML9-ARIN
OrgAdminName:         Martin Gramlick
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        GRAML9-ARIN
OrgTechName:          Martin Gramlick
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       GRAML9-ARIN
OrgAbuseName:         Martin Gramlick
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-11T03:30:09Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-telstra-testing-1	11790
ARIN	as1239:as-customers	4238
RADB	as-prole	1194
RADB	as6325:as-icn-highered	29
RADB	as-telstra-intl-customers	11999
RADB	as-icn-customers	69