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	Prefix	Description
	128.57.136.0/23	SRI International

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS33287	Comcast Cable Communications, LLC	✔	✘
	AS33659	Comcast Cable Communications, LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS33287	Comcast Cable Communications, LLC	✔	✘
	AS33659	Comcast Cable Communications, LLC	✔	✘

ASHandle:       AS53434
OrgID:          SI-342
ASName:         SRI-INTERNATIONAL-PRINCETON
ASNumber:       53434
RegDate:        2014-09-30
Updated:        2014-09-30
Source:         ARIN



OrgID:          SI-342
OrgName:        SRI International
CanAllocate:    
Street:         201 Washington Road
City:           Princeton
State/Prov:     NJ
Country:        US
PostalCode:     08543
RegDate:        2014-06-25
Updated:        2025-12-01
OrgAdminHandle: MNS19-ARIN
OrgTechHandle:  MAMF-ARIN
OrgTechHandle:  MNS19-ARIN
OrgTechHandle:  TOMAS90-ARIN
OrgAbuseHandle: MAMF-ARIN
OrgAbuseHandle: MNS19-ARIN
OrgAbuseHandle: TOMAS90-ARIN
OrgNOCHandle:   MNS19-ARIN
OrgRoutingHandle:   MAMF-ARIN
OrgRoutingHandle:   TOMAS90-ARIN
OrgDNSHandle:   MAMF-ARIN
OrgDNSHandle:   TOMAS90-ARIN
Source:         ARIN





OrgAdminHandle:       MNS19-ARIN
OrgAdminName:          Manager, Network Systems
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MAMF-ARIN
OrgTechName:          Mark Anthony Favis
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MNS19-ARIN
OrgTechName:           Manager, Network Systems
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        TOMAS90-ARIN
OrgTechName:          John Tomasetti
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       MAMF-ARIN
OrgAbuseName:         Mark Anthony Favis
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       MNS19-ARIN
OrgAbuseName:          Manager, Network Systems
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       TOMAS90-ARIN
OrgAbuseName:         John Tomasetti
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         MNS19-ARIN
OrgNOCName:            Manager, Network Systems
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     MAMF-ARIN
OrgRoutingName:       Mark Anthony Favis
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     TOMAS90-ARIN
OrgRoutingName:       John Tomasetti
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         MAMF-ARIN
OrgDNSName:           Mark Anthony Favis
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         TOMAS90-ARIN
OrgDNSName:           John Tomasetti
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-15T03:31:52Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-comcast-edia	2749
LEVEL3	as-conv	45