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

IP Address: 199.30.235.11 โš  Network Confounder

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

Geolocation Information
Country:
US United States
Coordinates:
37.751, -97.822
WHOIS Information
Network Name:
ZIXCORP
CIDR:
199.30.232.0/21
Owner:
Zix Corporation
Org ID:
CTOC-1
Address:
2711 N. Haskell Ave, Dallas, TX 75204
Reverse DNS:
zixmt1.zixworks.com
Last updated: 2/5/2026

Analysis

This IP was first observed on September 13, 2024 and most recently on June 28, 2025. It has been associated with 9 failed authentication events affecting 21 messages, representing moderate activity. The IP belongs to ZIXCORP (Zix Corporation), a network with activity associated with United States. 2 other IPs in the same /24 subnet (199.30.235.*) also appear in this dataset.

Network Topology

Failures Detected from this IP
Showing 1-9 of 9 failures, affecting 21 messages
Date โ–ผ Messages
6/28/2025 2
12/18/2024 1
12/4/2024 1
11/20/2024 3
11/12/2024 3
10/23/2024 3
9/27/2024 2
9/18/2024 3
9/13/2024 3
External Reputation Lookups

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

Nearby IPs

Other IPs in the 199.30.235.0/24 range observed failing DMARC:

199.30.235.91 (4 failures), 199.30.235.83 (3 failures)

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