Sh4mefulIP Address: 68.232.137.121 ⚠ Network Confounder
Cisco IronPort (now primarily branded as Cisco Email Security and Web Security) provides appliances and cloud services to defend against email-borne threats like spam, phishing, and malware, alongside web-based risks.
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:
- IRONPORT-DH
- CIDR:
68.232.128.0/19- Owner:
- Cisco Systems Ironport Division
- Org ID:
CISL-7- Address:
- 170 West Tasman Drive, San Jose, CA 95134
- Reverse DNS:
-
esa2.hc4297-88.iphmx.com
Last updated: 2/5/2026
Analysis
This IP was first observed on September 12, 2024 and most recently on May 13, 2025. It has been associated with 5 failed authentication events affecting 5 messages, representing low but recurring activity. The IP belongs to IRONPORT-DH (Cisco Systems Ironport Division), a network with activity associated with United States. One other IP in the same /24 subnet (68.232.137.*) also appears in this dataset.
External Reputation Lookups
Look up this IP in external threat intelligence and reputation databases (opens in new tab):
Nearby IPs
Other IPs in the 68.232.137.0/24 range observed failing DMARC:
68.232.137.110 (3 failures)