ArchivedNo longer active, data collection ran March 2024 to September 2026|9,442 records|3,409 source IPs|138 countriesAbout this archive
Shame on you, stupid spammers..Sh4meful  DMARC Spoof Detection

Network: PAIRNET-BLK-4

This page shows DMARC authentication failures originating from the PAIRNET-BLK-4 network. Learn more about this data.

Network Information
Org ID:
PAIR
Address:
2403 Sidney St Suite 210, Pittsburgh, PA 15203
Countries:
US
Unique IPs:
1
CIDR:
66.39.128.0/19, 66.39.0.0/17

Analysis

This network has contributed 1 unique IP address across 4 failed authentication events, accounting for 4 messages. Activity spans from October 30, 2024 to December 11, 2024, with peak volume in November 2024 (2 events). The top countries by failure volume are United States (100%). The most active source IP from this network includes 66.39.3.168 (4 failures). A single IP dominates activity from PAIRNET-BLK-4, suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-4 of 4 failures, affecting 4 messages
Date โ–ผ Source IP Country Messages
12/11/2024 66.39.3.168 US1
11/22/2024 66.39.3.168 US1
11/13/2024 66.39.3.168 US1
10/30/2024 66.39.3.168 US1
Countries