Sh4mefulIP Address: 2001:489a:2202:d::61c ⚠ IP Confounder
⚠ IP Confounder Detected: Microsoft 365 Exchange Online Protection (EOP)
EOP US Government / GCC Cloud outbound IPv6. PTR pattern: mail-*.outbound.protection.office365.us (bn3usg02on* and cy1usg02on* hostnames). 53 unique IPs observed across failures, all confirmed EOP by rDNS.
EOP US Government / GCC Cloud outbound IPv6. PTR pattern: mail-*.outbound.protection.office365.us (bn3usg02on* and cy1usg02on* hostnames). 53 unique IPs observed across failures, all confirmed EOP by rDNS.
This page shows DMARC authentication failure data for this IP address. Learn more about this data.
Geolocation Information
- Country:
- US United States
- Region:
- Wyoming
- City:
- Cheyenne
- Coordinates:
- 41.1437, -104.8117
WHOIS Information
- Network Name:
- MICROSOFT-IPV6-BLK
- CIDR:
2001:4898::/31, 2001:489A::/32- Owner:
- Microsoft Corporation
- Org ID:
MSFT- Address:
- One Microsoft Way, Redmond, WA 98052
- Reverse DNS:
-
mail-cy1usg02on061c.outbound.protection.office365.us
Last updated: 2/5/2026
Analysis
This IP was first observed on June 18, 2025 and most recently on November 19, 2025. It has been associated with 3 failed authentication events affecting 3 messages, representing low but recurring activity. The IP belongs to MICROSOFT-IPV6-BLK (Microsoft Corporation), a network with activity associated with United States.
External Reputation Lookups
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