Whois Lookup

Query registration info, expiration date, registrar and more for domain, IP or ASN

Example： google.com · baidu.com · github.com · 8.8.8.8 · 211.234.110.0/24 · AS13335
Registration Info
12.159.148.0/22
IP Range
12.159.148.0 - 12.159.151.255
CIDR
12.159.148.0/22
Network Name
ATT-NET-12-159-148-0-22
Organization
CISCO SYSTEMS, INC. (CS-2831)
Country/Region
US
Abuse Contact
[email protected]
Registration Date
2024-02-21
Update Date
2024-02-21
Registrant
CISCO SYSTEMS, INC. (CS-2831)
Domain Status
Reassigned
Raw Whois Data
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#



# start

NetRange:       12.0.0.0 - 12.255.255.255
CIDR:           12.0.0.0/8
NetName:        ATT
NetHandle:      NET-12-0-0-0-1
Parent:         NET12 (NET-12-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   AT&T Enterprises, LLC (AEL-360)
RegDate:        1983-08-23
Updated:        2025-12-02
Comment:        IP assignments within this IP Block range are STATIC, not dynamic.
Ref:            https://rdap.arin.net/registry/ip/12.0.0.0


AT&T Enterprises, LLC (AEL-360)


OrgAbuseHandle: ABUSE7-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-919-319-8167 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN

OrgTechHandle: ICC-ARIN
OrgTechName:   IP Team
OrgTechPhone:  +1-888-876-2382 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/ICC-ARIN

OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName:   Routing POC
OrgRoutingPhone:  +1-999-999-9999 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI59-ARIN

OrgTechHandle: ZS44-ARIN
OrgTechName:   IPAdmin-ATT Internet Services
OrgTechPhone:  +1-888-510-5545 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/ZS44-ARIN

# end


# start

NetRange:       12.159.148.0 - 12.159.151.255
CIDR:           12.159.148.0/22
NetName:        ATT-NET-12-159-148-0-22
NetHandle:      NET-12-159-148-0-1
Parent:         ATT (NET-12-0-0-0-1)
NetType:        Reassigned
OriginAS:       
Organization:   CISCO SYSTEMS, INC. (CS-2831)
RegDate:        2024-02-21
Updated:        2024-02-21
Comment:        This IPv4 Address Block is STATIC, not dynamic.
Ref:            https://rdap.arin.net/registry/ip/12.159.148.0


OrgName:        CISCO SYSTEMS, INC.
OrgId:          CS-2831
Address:        251 LITTLE FALLS DRIVE
City:           WILMINGTON
StateProv:      DE
PostalCode:     19808
Country:        US
RegDate:        2023-06-07
Updated:        2024-02-16
Ref:            https://rdap.arin.net/registry/entity/CS-2831


OrgNOCHandle: GATC-ARIN
OrgNOCName:   GIS ARIN Technical Contact
OrgNOCPhone:  +1-408-526-8888 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/GATC-ARIN

OrgTechHandle: GATC-ARIN
OrgTechName:   GIS ARIN Technical Contact
OrgTechPhone:  +1-408-526-8888 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/GATC-ARIN

OrgAbuseHandle: CISCO6-ARIN
OrgAbuseName:   Cisco CSIRT
OrgAbusePhone:  +1-408-527-3227 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CISCO6-ARIN

# end



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#