[ IP ]
138.91.16.18
#432,232Top IPs · 1M scope1 domain
Overview
Top IPs list rank
- 1M
- #432,232(1 domains)
- Hosted domains (90 days)
- 1
- Hosted domains (all time)
- 1
- First seen
- Sat Jul 18 2026 20:20:14 GM
- Last seen
- Sat Jul 18 2026 20:20:14 GM
- PDNS hits (90 days)
- 2
- Country
- US
- Snapshot
- 1970-01-01
Network operated by Microsoft Corp (MSFT-Z) (MICROSOFT).
List rank history
3 daily snapshots in the Top IPs list (1M scope). Lower rank numbers indicate more hosted domains in scope.
Whois — 138.91.16.18
- Netname
- MICROSOFT
- Organization
- Microsoft Corp (MSFT-Z)
- Country
- US
- ASN
- —
Full whois record
# # 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. # NetRange: 138.91.0.0 - 138.91.255.255 CIDR: 138.91.0.0/16 NetName: MICROSOFT NetHandle: NET-138-91-0-0-1 Parent: NET138 (NET-138-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Microsoft Corp (MSFT-Z) RegDate: 2011-06-22 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/138.91.0.0 OrgName: Microsoft Corp OrgId: MSFT-Z Address: One Microsoft Way City: Redmond StateProv: WA PostalCode: 98052 Country: US RegDate: 2011-06-22 Updated: 2025-06-10 Comment: To report suspected security issues specific to Comment: traffic emanating from Microsoft online services, Comment: including the distribution of malicious content Comment: or other illicit or illegal material through a Comment: Microsoft online service, please submit reports Comment: to: Comment: * https://cert.microsoft.com. Comment: Comment: For SPAM and other abuse issues, such as Microsoft Comment: Accounts, please contact: Comment: * [email protected]. Comment: Comment: To report security vulnerabilities in Microsoft Comment: products and services, please contact: Comment: * [email protected]. Comment: Comment: For legal and law enforcement-related requests, Comment: please contact: Comment: * [email protected] Comment: Comment: For routing, peering or DNS issues, please Comment: contact: Comment: * [email protected] Ref: https://rdap.arin.net/registry/entity/MSFT-Z OrgRoutingHandle: CHATU3-ARIN OrgRoutingName: Chaturmohta, Somesh OrgRoutingPhone: +1-425-882-8080 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/CHATU3-ARIN OrgTechHandle: BEDAR6-ARIN OrgTechName: Bedard, Dawn OrgTechPhone: +1-425-538-6637 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/BEDAR6-ARIN OrgTechHandle: IPHOS5-ARIN OrgTechName: IPHostmaster, IPHostmaster OrgTechPhone: +1-425-538-6637 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/IPHOS5-ARIN OrgTechHandle: MRPD-ARIN OrgTechName: Microsoft Routing, Peering, and DNS OrgTechPhone: +1-425-882-8080 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/MRPD-ARIN OrgAbuseHandle: MAC74-ARIN OrgAbuseName: Microsoft Abuse Contact OrgAbusePhone: +1-425-882-8080 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/MAC74-ARIN OrgTechHandle: SINGH683-ARIN OrgTechName: Singh, Prachi OrgTechPhone: +1-425-707-5601 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/SINGH683-ARIN # # 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. #
Open ports — 138.91.16.18
Port scan not run for 138.91.16.18 yet. Probes are queued from passive DNS IPs in the worker pipeline.