AS Number
AS13979
AS Name
ATT-IPFR
Org Name
AT&T Enterprises, LLC
Registry

arin

RegDate

2024-11-22

Updated

2025-08-13

AS13979 Looking Glass
IPv4Prefixes

11

IPv6Prefixes

0

IPv4 NUMs

83,456

IPv6 NUMs(/64)

0

83,456 IPv4 Addresses
CIDR Description IP Num
15.0.64.0/18
HP Inc. 16384
15.4.64.0/18
HP Inc. 16384
15.8.64.0/18
HP Inc. 16384
15.12.64.0/18
HP Inc. 16384
15.98.64.0/18
HP Inc. 16384
55.22.84.0/24
Headquarters, USAISC 256
55.22.144.0/24
Headquarters, USAISC 256
55.22.158.0/24
Headquarters, USAISC 256
198.22.127.0/24
USDA 256
204.10.158.0/24
IRR InValid
North American Telecommunications Corporation 256
204.10.159.0/24
IRR InValid
North American Telecommunications Corporation 256
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS4473 ATTIS-ASN4473 - AT&T Enterprises, LLC, US United States 144,640 2,097,152 IPv4 IPv4 IPv6 IPv6
AS30016 AS01-NATC-4-NA - North American Telecommunications Corporation, US United States 2,560 0 IPv4 IPv4
AS33 HPINC - HP Inc., US United States 4,608 0 IPv4 IPv4
AS348 DNIC-ASBLK-00306-00371 - DoD Network Information Center, US United States 65,536 16,777,216 IPv4 IPv4
AS3423 ATTIS-ASN3423 - AT&T Enterprises, LLC, US United States 3,328 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS4151 USDA-1 - USDA, US United States 0 0 IPv4 IPv4
AS4185 ATTIS-ASN4185 - AT&T Enterprises, LLC, US United States 201,216 1,310,720 IPv4 IPv4 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS8076 HUD - Department of Housing and Urban Development, US United States 2,560 131,072 IPv4 IPv4 IPv6 IPv6
AS10616 NTIS - National Oceanic and Atmospheric Administration, US United States 2,048 16,777,216 IPv4 IPv4 IPv6 IPv6
AS14298 EPA-NET - Environmental Protection Agency, US United States 262,400 268,435,456 IPv4 IPv4 IPv6 IPv6
AS2576 DOT-AS - U. S. Department of Transportation, US United States 268,800 3,932,160 IPv4 IPv4 IPv6 IPv6
ASNumber:       13979
ASName:         ATT-IPFR
ASHandle:       AS13979
RegDate:        1999-09-28
Updated:        2025-03-18    
Ref:            https://rdap.arin.net/registry/autnum/13979



OrgName:        AT&T Enterprises, LLC
OrgId:          AEL-360
Address:        5302 HARRY HINES BLVD
City:           Dallas
StateProv:      TX
PostalCode:     75235
Country:        US
RegDate:        2024-11-22
Updated:        2025-08-13
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

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

OrgTechHandle: ZS44-ARIN
OrgTechName:   IPAdmin-ATT Internet Services
OrgTechPhone:  +1-888-510-5545 
OrgTechEmail:  ipadmin@semail.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