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	Prefix	Description
	131.215.0.0/16	California Institute of Technology
	131.215.229.0/24	California Institute of Technology
	131.215.230.0/24	California Institute of Technology
	131.215.234.0/24	California Institute of Technology
	131.215.239.0/24	California Institute of Technology
	131.215.240.0/24	California Institute of Technology
	131.215.242.0/23	California Institute of Technology
	131.215.244.0/23	California Institute of Technology
	134.4.0.0/16	California Institute of Technology
	192.12.19.0/24	California Institute of Technology
	192.31.43.0/24	California Institute of Technology
	192.41.208.0/24	California Institute of Technology
	2607:f520::/32	California Institute of Technology

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2152	CENIC - CalREN	✔	✔
	AS13335	Cloudflare, Inc.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS13335	Cloudflare, Inc.	✔	✘
	AS2152	CENIC - CalREN	✔	✔
	AS2153	CENIC	✔	✔

ASHandle:       AS31
OrgID:          CIT-4-Z
ASName:         CIT
ASNumber:       31
RegDate:        1984-09-21
Updated:        2023-08-29
TechHandle:     CI2-ORG-ARIN
Source:         ARIN



OrgID:          CIT-4-Z
OrgName:        California Institute of Technology
CanAllocate:    
Street:         1200 East California Boulevard
Street:         MS 1-10
City:           Pasadena
State/Prov:     CA
Country:        US
PostalCode:     91125
RegDate:        2023-08-22
Updated:        2023-08-22
OrgAdminHandle: CI2-ORG-ARIN
OrgTechHandle:  CI2-ORG-ARIN
OrgAbuseHandle: CI2-ORG-ARIN
Source:         ARIN





OrgAdminHandle:       CI2-ORG-ARIN
OrgAdminName:          Caltech Network Operations Center
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        CI2-ORG-ARIN
OrgTechName:           Caltech Network Operations Center
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       CI2-ORG-ARIN
OrgAbuseName:          Caltech Network Operations Center
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           CI2-ORG-ARIN
TechName:              Caltech Network Operations Center
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-12-26T03:34:02Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-kddcustomer2	8206
RADB	as-nwn-transit	2049
RADB	as174:as-cogc-021	43
LEVEL3	as-level3-origins-na	0
NTTCOM	as-losnettos	36
NTTCOM	as-losnettos-ipv6	16
RADB	as37271:as-test-cf	93
ARIN	as13335:as-customers	1505
RADB	as-calren2	288
RIPE	as-transroute-spec	19683
RADB	as16631:as-cogc-010	73
RADB	as-telstra-intl-customers	11826
RADB	as-hurricanev6	20179
RADB	as-telstra-testing-1	11766