IP Address: 67.231.155.141 ⚠ Network Confounder

⚠ Network Confounder Detected: Proofpoint Email Security
Proofpoint network identifier

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

Geolocation Information

Country:: US United States
Region:: California
Coordinates:: 34.0544, -118.244

WHOIS Information

Network Name:: PROOFPOINT-NET-NORTH-AMERICA
CIDR:: 67.231.144.0/20
Owner:: Proofpoint, Inc.
Org ID:: PROOF
Address:: 925 W Maude Ave, Sunnyvale, CA 94085
Reverse DNS:: mx0f-0040cb02.gpphosted.com
Last updated: 2/5/2026

Analysis

This IP was first observed on September 20, 2024 and most recently on December 5, 2024. It has been associated with 5 failed authentication events affecting 13 messages, representing low but recurring activity. The IP belongs to PROOFPOINT-NET-NORTH-AMERICA (Proofpoint, Inc.), a network with activity associated with United States. One other IP in the same /24 subnet (67.231.155.*) also appears in this dataset.

Failures Detected from this IP

Showing 1-5 of 5 failures, affecting 13 messages

Date ▼	Messages
12/5/2024	3
12/4/2024	2
10/23/2024	1
9/27/2024	3
9/20/2024	4

External Reputation Lookups

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

AbuseIPDB Cisco Talos Project Honey Pot GreyNoise VirusTotal Shodan Censys Spamhaus

Nearby IPs

Other IPs in the 67.231.155.0/24 range observed failing DMARC:

67.231.155.118 (1 failure)