Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection

IP Address: 172.245.23.133

This page shows DMARC authentication failure data for this IP address. Learn more about this data.

Geolocation Information
Country:
US United States
Region:
California
City:
Los Angeles
Coordinates:
34.0544, -118.244
WHOIS Information
Network Name:
CC-14
CIDR:
172.245.0.0/16
Owner:
HostPapa
Org ID:
HOSTP-7
Address:
325 Delaware Avenue Suite 300, Buffalo, NY 14202
Reverse DNS:
172-245-23-133-host.colocrossing.com
Last updated: 2/5/2026

Analysis

This IP was first observed on September 23, 2025 and most recently on October 23, 2025. It has been associated with 5 failed authentication events affecting 5 messages, representing low but recurring activity. The IP belongs to CC-14 (HostPapa), a network with activity associated with United States. 4 other IPs in the same /24 subnet (172.245.23.*) also appear in this dataset.

Network Topology

Failures Detected from this IP
Showing 1-5 of 5 failures, affecting 5 messages
Date โ–ผ Messages
10/23/2025 1
10/3/2025 1
9/26/2025 1
9/24/2025 1
9/23/2025 1
External Reputation Lookups

Look up this IP in external threat intelligence and reputation databases (opens in new tab):

Nearby IPs

Other IPs in the 172.245.23.0/24 range observed failing DMARC:

172.245.23.167 (3 failures), 172.245.23.164 (2 failures), 172.245.23.181 (2 failures), 172.245.23.175 (1 failure)

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