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

Network: Telefonica de Argentina

This page shows DMARC authentication failures originating from the Telefonica de Argentina network. Learn more about this data.

Network Information
WHOIS Owner:
Telefonica de Argentina
Address:
Av. Independencia, 169, PB, 1099 - Buenos Aires - CF
Countries:
AR
Unique IPs:
10
CIDRs:
179.36.0.0/14, 181.20.0.0/14, (more)

Analysis

This network has contributed 10 unique IP addresses across 10 failed authentication events, accounting for 24 messages. Activity spans from November 21, 2024 to July 21, 2025, with peak volume in June 2025 (4 events). The top countries by failure volume are Argentina (100%). The most active source IPs from this network include 181.20.197.201 (1 failure), 181.20.67.39 (1 failure), 179.38.95.113 (1 failure). Failures from Telefonica de Argentina are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.

Failures Detected from this Network
Showing 1-10 of 10 failures, affecting 24 messages
Date โ–ฒ Source IP Country Messages
11/21/2024 191.82.244.22 AR 4
4/18/2025 179.38.95.113 AR 4
5/10/2025 190.51.169.180 AR 4
6/15/2025 186.128.44.197 AR 4
6/25/2025 186.39.134.25 AR 2
6/27/2025 181.20.197.201 AR 1
6/30/2025 190.49.99.109 AR 2
7/2/2025 181.20.67.39 AR 1
7/6/2025 186.132.170.110 AR 1
7/21/2025 181.20.99.221 AR 1
Countries