AS Number
AS0
AS Name
ATT-CERFNET-BLOCK
Org Name
AT&T Enterprises, LLC
Registry

arin

RegDate

2024-11-22

Updated

2025-03-21

AS17225 Looking Glass
IPv4Prefixes

11

IPv6Prefixes

0

IPv4 NUMs

40,704

IPv6 NUMs(/64)

0

40,704 IPv4 Addresses
CIDR Description IP Num
12.130.0.0/18 CERFnet 16384
134.24.173.0/24 AT&T Enterprises, LLC 256
134.24.236.0/22 CERFnet 1024
135.12.0.0/21 Celestica International LP 2048
149.17.208.0/20 AT&T Enterprises, LLC 4096
199.107.224.0/21 AT&T Enterprises, LLC 2048
206.16.88.0/23 AT&T Enterprises, LLC 512
206.16.144.0/20 AT&T Enterprises, LLC 4096
206.17.96.0/20 AT&T Enterprises, LLC 4096
206.19.40.0/21 AT&T Enterprises, LLC 2048
206.19.48.0/20 AT&T Enterprises, LLC 4096
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US United States 93,836,544 2,737,557,012,480 IPv4 IPv4
ASNumber:       17224 - 17233
ASName:         ATT-CERFNET-BLOCK
ASHandle:       AS17224
RegDate:        2000-08-09
Updated:        2025-03-19    
Ref:            https://rdap.arin.net/registry/autnum/17224



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:        2025-03-21
Ref:            https://rdap.arin.net/registry/entity/AEL-360


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

OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName:   Routing POC
OrgRoutingPhone:  +1-999-999-9999 
OrgRoutingEmail:  routing@cbbtier3.att.net
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI59-ARIN