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	Prefix	Description
	66.128.16.0/24	Electric Reliability Council of Texas, Inc.
	66.128.16.0/22	Electric Reliability Council of Texas, Inc.
	66.128.17.0/24	Electric Reliability Council of Texas, Inc.
	66.128.18.0/24	Electric Reliability Council of Texas, Inc.
	66.128.19.0/24	Electric Reliability Council of Texas, Inc.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS19551	Incapsula Inc	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS19551	Incapsula Inc	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘

ASHandle:       AS10322
OrgID:          EISO
ASName:         ERCOT-ISO
ASNumber:       10322
RegDate:        1997-06-25
Updated:        1997-06-25
TechHandle:     CK47-ARIN
Source:         ARIN



OrgID:          EISO
OrgName:        Ercot Independent System Operations
CanAllocate:    
Street:         2705 West Lake Dr.
City:           Taylor
State/Prov:     TX
Country:        US
PostalCode:     76574
RegDate:        1997-06-25
Updated:        2019-03-19
OrgAdminHandle: ENG9-ARIN
OrgTechHandle:  CHAMB250-ARIN
OrgTechHandle:  ENG9-ARIN
OrgAbuseHandle: CHAMB250-ARIN
OrgAbuseHandle: ENG9-ARIN
OrgNOCHandle:   ENG9-ARIN
OrgNOCHandle:   HELPD11-ARIN
Source:         ARIN





OrgAdminHandle:       ENG9-ARIN
OrgAdminName:          ERCOT Network Group
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        CHAMB250-ARIN
OrgTechName:          Jason Chambers
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ENG9-ARIN
OrgTechName:           ERCOT Network Group
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       CHAMB250-ARIN
OrgAbuseName:         Jason Chambers
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ENG9-ARIN
OrgAbuseName:          ERCOT Network Group
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         ENG9-ARIN
OrgNOCName:            ERCOT Network Group
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         HELPD11-ARIN
OrgNOCName:            HelpDesk
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           CK47-ARIN
TechName:             chad kissinger
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-04-18T03:28:32Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-as23005	322
ARIN	as-incapsula	366
RIPE	as-incapsula	366
RADB	as-datafoundry	48
RADB	as-telstra-intl-customers	10814
RADB	as-rr-biz	2017
RADB	as19551:as-imperva	276
LEVEL3	as25956:as-customers	54
LEVEL3	as-sprint-origins	7309