Sh4meful DMARC Spoof Detection
IP Address: 34.223.36.100
ℹ️ Network Annotation: Amazon Web Services (AWS)
Last updated: 1/29/2026
This is (part of) the AWS public cloud. Some email protection services run in AWS, but it is also an attack/spam vector.
About this Data
▶The data here is from DMARC analysis for domains I administer, drawn from a larger dataset (comprising millions of authentication records and messages). These entries are from email attempts that failed both SPF and DKIM (and there are often alignment issues - hidden here). In many cases, these failures indicate unauthorized use of the domain name, and are commonly associated with spoofing, phishing, or other abusive mail activity.
Geolocation Information
- Country:
- US United States
- Region:
- Oregon
- City:
- Boardman
- Coordinates:
- 45.8401, -119.705
WHOIS Information
- Network Name:
- AT-88-Z
- CIDR:
34.192.0.0/10- Reverse DNS:
-
mta-231cee.us.email.fireeyecloud.com
Last updated: 2/5/2026
Failures Detected from this IP
Showing 1-34 of 34 (failures, affecting 69 messages)| Date ▼ | Messages |
|---|---|
| 1/28/2026 | 1 |
| 12/19/2025 | 1 |
| 12/3/2025 | 1 |
| 10/1/2025 | 1 |
| 9/25/2025 | 2 |
| 9/17/2025 | 1 |
| 7/31/2025 | 2 |
| 7/10/2025 | 1 |
| 7/1/2025 | 1 |
| 6/27/2025 | 7 |
| 6/25/2025 | 1 |
| 6/13/2025 | 1 |
| 6/4/2025 | 1 |
| 4/30/2025 | 1 |
| 3/12/2025 | 1 |
| 2/26/2025 | 1 |
| 2/14/2025 | 1 |
| 12/11/2024 | 1 |
| 12/5/2024 | 3 |
| 12/4/2024 | 2 |
| 11/22/2024 | 1 |
| 11/20/2024 | 1 |
| 11/13/2024 | 2 |
| 11/12/2024 | 7 |
| 10/23/2024 | 3 |
| 9/27/2024 | 6 |
| 9/25/2024 | 3 |
| 9/20/2024 | 1 |
| 9/18/2024 | 1 |
| 9/13/2024 | 9 |
| 9/6/2024 | 1 |
| 6/26/2024 | 1 |
| 5/31/2024 | 1 |
| 3/13/2024 | 1 |