AS20057 AT&T Enterprises, LLC 🇺🇸 US

Announcing 1,631 prefixes, seen at the RIS collectors.

IPv4 prefixes

1,470

6,572,288 (25,673 × /24)

IPv6 prefixes

161

60,125 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS20057
Name: AT&T Enterprises, LLC
Organisation: AT&T Enterprises, LLC
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2001-03-20

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

1,447 valid (88.7%) 21 invalid (1.3%) 163 no ROA (10.0%)

Whois

Fetched from whois.arin.net

ASNumber:       20057
ASName:         ATT-MOBILITY-LLC-AS20057
ASHandle:       AS20057
RegDate:        2001-03-20
Updated:        2025-03-18
Ref:            https://rdap.arin.net/registry/autnum/20057

OrgName:        AT&T Enterprises, LLC
OrgId:          AEL-360
Address:        208 S. Akard St.
City:           Dallas
StateProv:      TX
PostalCode:     75202
Country:        US
RegDate:        2024-11-22
Updated:        2026-06-05
Ref:            https://rdap.arin.net/registry/entity/AEL-360

OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName:   Routing POC
OrgRoutingPhone:  +1-999-999-9999
OrgRoutingEmail:  routing_poc@att.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI59-ARIN

OrgTechHandle: ICC-ARIN
OrgTechName:   IP Team
OrgTechPhone:  +1-888-876-2382
OrgTechEmail:  rm-ipspecialist@att.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ICC-ARIN

OrgTechHandle: ZS44-ARIN
OrgTechName:   IPAdmin-ATT Internet Services
OrgTechPhone:  +1-888-510-5545
OrgTechEmail:  ipadmin@att.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZS44-ARIN

OrgAbuseHandle: ABUSE7-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-919-319-8167
OrgAbuseEmail:  abuse@att.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN