# # 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 1997-2025, American Registry for Internet Numbers, Ltd. # # start NetRange: 168.183.0.0 - 168.183.255.255 CIDR: 168.183.0.0/16 NetName: UHC-B2 NetHandle: NET-168-183-0-0-1 Parent: NET168 (NET-168-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: UnitedHealth Group Incorporated (UHC-5) RegDate: 1994-05-23 Updated: 2018-07-06 Ref: https://rdap.arin.net/registry/ip/168.183.0.0 OrgName: UnitedHealth Group Incorporated OrgId: UHC-5 Address: IP & DNS Team Address: 6150 Trenton Lane City: Plymouth StateProv: MN PostalCode: 55442 Country: US RegDate: 1994-05-23 Updated: 2012-03-15 Ref: https://rdap.arin.net/registry/entity/UHC-5 OrgTechHandle: UHNO-ARIN OrgTechName: United Healthcare Network OC OrgTechPhone: +1-763-744-1588 OrgTechEmail: inet_ops@uhc.com OrgTechRef: https://rdap.arin.net/registry/entity/UHNO-ARIN OrgAbuseHandle: UHNO-ARIN OrgAbuseName: United Healthcare Network OC OrgAbusePhone: +1-763-744-1588 OrgAbuseEmail: inet_ops@uhc.com OrgAbuseRef: https://rdap.arin.net/registry/entity/UHNO-ARIN RAbuseHandle: UHNO-ARIN RAbuseName: United Healthcare Network OC RAbusePhone: +1-763-744-1588 RAbuseEmail: inet_ops@uhc.com RAbuseRef: https://rdap.arin.net/registry/entity/UHNO-ARIN RNOCHandle: UHNO-ARIN RNOCName: United Healthcare Network OC RNOCPhone: +1-763-744-1588 RNOCEmail: inet_ops@uhc.com RNOCRef: https://rdap.arin.net/registry/entity/UHNO-ARIN RTechHandle: UHNO-ARIN RTechName: United Healthcare Network OC RTechPhone: +1-763-744-1588 RTechEmail: inet_ops@uhc.com RTechRef: https://rdap.arin.net/registry/entity/UHNO-ARIN # end # start NetRange: 168.183.170.0 - 168.183.170.255 CIDR: 168.183.170.0/24 NetName: UHG-ZSCALER-CHICAGO-01 NetHandle: NET-168-183-170-0-1 Parent: UHC-B2 (NET-168-183-0-0-1) NetType: Reassigned OriginAS: Organization: ZSCALER, INC. (ZSCAL) RegDate: 2025-09-15 Updated: 2025-09-15 Ref: https://rdap.arin.net/registry/ip/168.183.170.0 OrgName: ZSCALER, INC. OrgId: ZSCAL Address: 120 Holger Way City: San Jose StateProv: CA PostalCode: 95134 Country: US RegDate: 2011-03-18 Updated: 2025-11-06 Comment: Zscaler customer traffic originates from colocation facilities around the world. You should *NOT* use the address or contact information here for the purposes of geolocation. Additionally, because traffic egressing our network may belong to any one of our customers, you should not assume that this traffic belongs to us. Comment: Comment: For network or security incidents, please reach out to our abuse POC, which is actually monitored and actioned. Ref: https://rdap.arin.net/registry/entity/ZSCAL OrgAbuseHandle: POCAB2-ARIN OrgAbuseName: poc-abuse OrgAbusePhone: +1-408-701-0534 OrgAbuseEmail: poc-abuse@zscaler.com OrgAbuseRef: https://rdap.arin.net/registry/entity/POCAB2-ARIN OrgTechHandle: MMT31-ARIN OrgTechName: Teng, Michael Michael OrgTechPhone: +1-650-937-9195 OrgTechEmail: mteng@zscaler.com OrgTechRef: https://rdap.arin.net/registry/entity/MMT31-ARIN OrgTechHandle: POCTE3-ARIN OrgTechName: poc-tech OrgTechPhone: +1-408-701-0534 OrgTechEmail: poc-tech@zscaler.com OrgTechRef: https://rdap.arin.net/registry/entity/POCTE3-ARIN OrgNOCHandle: POCNO1-ARIN OrgNOCName: poc-noc OrgNOCPhone: +1-408-701-0534 OrgNOCEmail: poc-noc@zscaler.com OrgNOCRef: https://rdap.arin.net/registry/entity/POCNO1-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 1997-2025, American Registry for Internet Numbers, Ltd. #