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	Prefix	Description
	128.55.0.0/16	ESnet
	2620:0:28b0::/44	National Energy Research Scientific Computing Center

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS293	ESnet	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS293	ESnet	✔	✔

ASHandle:       AS2936
OrgID:          NERSC-Z
ASName:         NERSC
ASNumber:       2936 - 2937
RegDate:        1994-11-23
Updated:        2024-11-13
TechHandle:     KUMAR376-ARIN
TechHandle:     SGT10-ARIN
AbuseHandle:    SECUR88-ARIN
NOCHandle:      SGT10-ARIN
Source:         ARIN



OrgID:          NERSC-Z
OrgName:        National Energy Research Scientific Computing Center
CanAllocate:    
Street:         One Cyclotron Rd
City:           Berkeley
State/Prov:     CA
Country:        US
PostalCode:     94720
RegDate:        2008-11-07
Updated:        2025-10-30
OrgAdminHandle: SGT10-ARIN
OrgTechHandle:  KUMAR376-ARIN
OrgTechHandle:  SGT10-ARIN
OrgAbuseHandle: SECUR88-ARIN
OrgAbuseHandle: SGT10-ARIN
OrgRoutingHandle:   SGT10-ARIN
Source:         ARIN





OrgAdminHandle:       SGT10-ARIN
OrgAdminName:         Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        KUMAR376-ARIN
OrgTechName:          Ronal Kumar
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        SGT10-ARIN
OrgTechName:          Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       SECUR88-ARIN
OrgAbuseName:          Security
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       SGT10-ARIN
OrgAbuseName:         Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     SGT10-ARIN
OrgRoutingName:       Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           KUMAR376-ARIN
TechName:             Ronal Kumar
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           SGT10-ARIN
TechName:             Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          SECUR88-ARIN
AbuseName:             Security
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            SGT10-ARIN
NOCName:              Tavia Stone Gibbins
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-03-13T03:26:03Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-hurricane	24528
RADB	as-hurricanev6	20649
RIPE	as-transroute-spec	19641
RIPE	as20965:as-from-tein-to-geant	656
ARIN	as293:as-esnet	60