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

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

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

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@att.com
OrgTechRef: https://rdap.arin.net/registry/entity/ZS44-ARIN

NetRange: 12.21.231.0 - 12.21.231.255
CIDR: 12.21.231.0/24
NetName: LENDING-92-231
NetHandle: NET-12-21-231-0-1
Parent: ATT (NET-12-0-0-0-1)
NetType: Reassigned
OriginAS:
Organization: LENDING TREE (LENDIN-3)
RegDate: 2008-01-18
Updated: 2008-01-18
Ref: https://rdap.arin.net/registry/ip/12.21.231.0

OrgName: LENDING TREE
OrgId: LENDIN-3
Address: 1415 Vantage Park Dr., Suite 700
City: CHARLOTTE
StateProv: NC
PostalCode: 28203
Country: US
RegDate: 2000-10-24
Updated: 2021-05-27
Ref: https://rdap.arin.net/registry/entity/LENDIN-3

OrgNOCHandle: NETWO7069-ARIN
OrgNOCName: Network Operations
OrgNOCPhone: +1-704-943-8508
OrgNOCEmail: netops@lendingtree.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NETWO7069-ARIN

OrgTechHandle: NETWO7069-ARIN
OrgTechName: Network Operations
OrgTechPhone: +1-704-943-8508
OrgTechEmail: netops@lendingtree.com
OrgTechRef: https://rdap.arin.net/registry/entity/NETWO7069-ARIN

OrgAbuseHandle: NETWO7069-ARIN
OrgAbuseName: Network Operations
OrgAbusePhone: +1-704-943-8508
OrgAbuseEmail: netops@lendingtree.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/NETWO7069-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.