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

Network: TELESISTEMA S.R.L.

This page shows DMARC authentication failures originating from the TELESISTEMA S.R.L. network. Learn more about this data.

Network Information
WHOIS Owner:
TELESISTEMA S.R.L.
Address:
Hipolito Irigoyen, 1274,, 4600 - San Salvador -
Countries:
AR
Unique IPs:
1
CIDR:
181.177.0.0/18

Analysis

This network has contributed 1 unique IP address across 6 failed authentication events, accounting for 8 messages. Activity spans from March 18, 2026 to April 1, 2026, with peak volume in March 2026 (6 events). The top countries by failure volume are Argentina (100%). The most active source IP from this network includes 181.177.12.111 (7 failures). A single IP dominates activity from TELESISTEMA S.R.L., suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 1-6 of 6 failures, affecting 8 messages
Countries