# # 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 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: 2025-10-29 Ref: https://rdap.arin.net/registry/entity/AEL-360 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: DL-routing_poc@att.com 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 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 # end # start NetRange: 12.10.32.0 - 12.10.33.255 CIDR: 12.10.32.0/23 NetName: ATT-NET-12-10-32-0 NetHandle: NET-12-10-32-0-1 Parent: ATT (NET-12-0-0-0-1) NetType: Reassigned OriginAS: Organization: MasterCard Technologies LLC (MASTER-7) RegDate: 2024-10-14 Updated: 2024-10-14 Ref: https://rdap.arin.net/registry/ip/12.10.32.0 OrgName: MasterCard Technologies LLC OrgId: MASTER-7 Address: 2200 MasterCard Blvd City: O'Fallon StateProv: MO PostalCode: 63368 Country: US RegDate: 1997-11-27 Updated: 2024-11-25 Ref: https://rdap.arin.net/registry/entity/MASTER-7 OrgAbuseHandle: NCC18-ARIN OrgAbuseName: Network Command Center OrgAbusePhone: +1-636-722-6220 OrgAbuseEmail: hostmaster@mastercard.org OrgAbuseRef: https://rdap.arin.net/registry/entity/NCC18-ARIN OrgTechHandle: ABRAM96-ARIN OrgTechName: Abrams, Alex OrgTechPhone: +1-636-515-6321 OrgTechEmail: Alex.Abrams@mastercard.com OrgTechRef: https://rdap.arin.net/registry/entity/ABRAM96-ARIN OrgTechHandle: NACHE-ARIN OrgTechName: Nache, Samuel OrgTechPhone: +1-636-354-9999 OrgTechEmail: sam.nache@mastercard.com OrgTechRef: https://rdap.arin.net/registry/entity/NACHE-ARIN OrgNOCHandle: NCC18-ARIN OrgNOCName: Network Command Center OrgNOCPhone: +1-636-722-6220 OrgNOCEmail: hostmaster@mastercard.org OrgNOCRef: https://rdap.arin.net/registry/entity/NCC18-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. #