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: 2025-03-18
Ref: https://rdap.arin.net/registry/ip/12.0.0.0

AT&T Enterprises, LLC (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

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

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

NetRange: 12.36.144.128 - 12.36.144.255
CIDR: 12.36.144.128/25
NetName: QS1-144-128
NetHandle: NET-12-36-144-128-1
Parent: ATT (NET-12-0-0-0-1)
NetType: Reassigned
OriginAS:
Organization: QS/1 Data Systems (QDS-1)
RegDate: 1999-10-12
Updated: 1999-10-12
Ref: https://rdap.arin.net/registry/ip/12.36.144.128

OrgName: QS/1 Data Systems
OrgId: QDS-1
Address: 8045 Howard Street
City: Spartanburg
StateProv: SC
PostalCode: 29303
Country: US
RegDate: 1998-04-09
Updated: 2011-09-24
Ref: https://rdap.arin.net/registry/entity/QDS-1

OrgTechHandle: CKN23-ARIN
OrgTechName: No, Contact Known
OrgTechPhone: +1-800-555-1234
OrgTechEmail: nobody@example.com
OrgTechRef: https://rdap.arin.net/registry/entity/CKN23-ARIN

OrgAbuseHandle: CKN23-ARIN
OrgAbuseName: No, Contact Known
OrgAbusePhone: +1-800-555-1234
OrgAbuseEmail: nobody@example.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/CKN23-ARIN

RTechHandle: LC30-ARIN
RTechName: Campbell, Linda
RTechPhone: +1-846-503-9455
RTechEmail: lcampbel@qsl.com
RTechRef: https://rdap.arin.net/registry/entity/LC30-ARIN

DNSBL* - is a list of IP addresses published through the Internet Domain Name Service (DNS) either as a zone file that can be used by DNS server software, or as a live DNS zone that can be queried in real-time. DNSBLs are most often used to publish the addresses of computers or networks linked to spamming; most mail server software can be configured to reject or flag messages which have been sent from a site listed on one or more such lists.

WHOIS** - is a query/response protocol that is widely used for querying databases in order to determine the registrant or assignee of Internet resources, such as a domain name, an IP address block, or an autonomous system number. WHOIS lookups were traditionally performed with a command line interface application, and network administrators predominantly still use this method, but many simplified web-based tools exist. WHOIS services are typically communicated using the Transmission Control Protocol (TCP). Servers listen to requests on the well-known port number 43.

** Approximate Geographic Location - This is NOT the exact geographical location of the person/organization with the given IP address. However, this should still give you a good idea about the area/region where this person/orgranization is located.