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	Prefix	Description
	12.226.78.0/23	ATTSI, INFORMATION TECHNOLOGY OP
	64.123.22.0/24	SBC Laboratories
	107.77.112.0/20	AT&T Enterprises, LLC
	108.79.160.0/20	AT&T Enterprises, LLC
	144.60.0.0/21	AT&T Services, Inc.
	144.60.9.0/24	AT&T Services, Inc.
	144.60.10.0/23	AT&T Services, Inc.
	144.60.12.0/22	AT&T Services, Inc.
	144.60.16.0/20	AT&T Services, Inc.
	144.60.32.0/19	AT&T Services, Inc.
	144.60.64.0/19	AT&T Services, Inc.
	144.60.96.0/23	AT&T Services, Inc.
	144.60.98.0/24	AT&T Services, Inc.
	144.60.112.0/22	AT&T Services, Inc.
	144.60.116.0/23	AT&T Services, Inc.
	144.60.124.0/22	AT&T Services, Inc.
	144.60.128.0/21	AT&T Services, Inc.
	144.60.168.0/21	AT&T Services, Inc.
	144.60.176.0/21	AT&T Services, Inc.
	144.60.200.0/22	AT&T Services, Inc.
	144.60.209.0/24	AT&T Services, Inc.
	198.224.8.0/24	AT&T Enterprises, LLC
	198.224.16.0/20	AT&T Enterprises, LLC
	198.228.248.0/21	AT&T Enterprises, LLC
	205.173.58.0/24	AT&T Services, Inc.
	209.64.7.0/24	ATTSI, INFORMATION TECHNOLOGY OP
	2620:10d:9000::/48	AT&T Enterprises, LLC
	2620:10d:9004::/48	AT&T Enterprises, LLC
	2620:10d:900f::/48	AT&T Enterprises, LLC

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✔
	AS5671	AT&T Enterprises, LLC	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS5671	AT&T Enterprises, LLC	✔	✘

ASHandle:       AS25993
OrgID:          AEL-360
ASName:         ATT-LABS-AUSTIN-TX
ASNumber:       25993
RegDate:        2002-06-12
Updated:        2025-03-18
Source:         ARIN



OrgID:          AEL-360
OrgName:        AT&T Enterprises, LLC
CanAllocate:    
Street:         208 S. Akard St.
City:           Dallas
State/Prov:     TX
Country:        US
PostalCode:     75202
RegDate:        2024-11-22
Updated:        2025-10-29
OrgAdminHandle: ZS44-ARIN
OrgTechHandle:  ICC-ARIN
OrgTechHandle:  ZS44-ARIN
OrgAbuseHandle: ABUSE7-ARIN
OrgRoutingHandle:   ROUTI59-ARIN
Source:         ARIN





OrgAdminHandle:       ZS44-ARIN
OrgAdminName:          IPAdmin-ATT Internet Services
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ICC-ARIN
OrgTechName:           IP Team
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ZS44-ARIN
OrgTechName:           IPAdmin-ATT Internet Services
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE7-ARIN
OrgAbuseName:          abuse
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     ROUTI59-ARIN
OrgRoutingName:        Routing POC
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-05-07T03:37:05Z UTC

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Member of the following AS-SETs

-	Member	ASN Count