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	Prefix	Description
	66.244.67.0/24	Cornerstone Information Systems Inc.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS11550	Smithville Digital, LLC	✔	✘
	AS33491	Comcast Cable Communications, LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS11550	Smithville Digital, LLC	✔	✘
	AS33491	Comcast Cable Communications, LLC	✔	✘

ASHandle:       AS62945
OrgID:          CIS-36
ASName:         CORNERSTONE
ASNumber:       62945
RegDate:        2013-12-03
Updated:        2013-12-03
Source:         ARIN



OrgID:          CIS-36
OrgName:        Cornerstone Information Systems, Inc.
CanAllocate:    
Street:         304 W. Kirkwood
Street:         Suite 4
City:           Bloomington
State/Prov:     IN
Country:        US
PostalCode:     47404
RegDate:        1997-12-08
Updated:        2011-09-24
OrgAdminHandle: ADMIN841-ARIN
OrgTechHandle:  SYSTE145-ARIN
OrgAbuseHandle: SYSTE145-ARIN
Source:         ARIN





OrgAdminHandle:       ADMIN841-ARIN
OrgAdminName:          Administrator
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        SYSTE145-ARIN
OrgTechName:           Systems
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       SYSTE145-ARIN
OrgAbuseName:          Systems
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-14T03:25:49Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-comcast-edia	2774
RADB	as11550:as-customers	16