Sh4mefulIP Address: 40.107.22.49 ⚠ IP Confounder
Outbound; PTR: *.outbound.protection.outlook.com
Differentiating between Office 365, including email protection services, and Azure (public cloud) when diagnosing incidents is challenging because they utilize shared Microsoft-owned IP ranges. Most of this is probably O365/Outlook or Defender protection breaking DKIM and SPF authentication. Disambiguation is a work-in-progress.
This page shows DMARC authentication failure data for this IP address. Learn more about this data.
Geolocation Information
- Country:
- NL The Netherlands
- Region:
- North Holland
- City:
- Amsterdam
- Coordinates:
- 52.3759, 4.8975
WHOIS Information
- Network Name:
- MSFT
- CIDR:
40.125.0.0/17, 40.120.0.0/14, 40.76.0.0/14, 40.74.0.0/15, 40.80.0.0/12, 40.124.0.0/16, 40.96.0.0/12, 40.112.0.0/13- Owner:
- Microsoft Corporation
- Org ID:
MSFT- Address:
- One Microsoft Way, Redmond, WA 98052
- Reverse DNS:
-
mail-am6eur05on2049.outbound.protection.outlook.com
Last updated: 2/5/2026
Analysis
This IP was observed on a single date: September 27, 2024. It has been associated with 1 failed authentication event affecting 1 message — a single isolated event. The IP belongs to MSFT (Microsoft Corporation), a network with activity associated with The Netherlands. 8 other IPs in the same /24 subnet (40.107.22.*) also appear in this dataset.
Network Topology
External Reputation Lookups
Look up this IP in external threat intelligence and reputation databases (opens in new tab):
Nearby IPs
Other IPs in the 40.107.22.0/24 range observed failing DMARC:
40.107.22.86 (2 failures), 40.107.22.78 (2 failures), 40.107.22.137 (1 failure), 40.107.22.43 (1 failure), 40.107.22.44 (1 failure), 40.107.22.68 (1 failure), 40.107.22.71 (1 failure), 40.107.22.73 (1 failure)