IP Address: 67.231.145.199 ⚠ 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:: mx0a-002fc702.pphosted.com
Last updated: 2/5/2026

Analysis

This IP was first observed on September 18, 2024 and most recently on June 27, 2025. It has been associated with 3 failed authentication events affecting 5 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 (67.231.145.*) also appears in this dataset.

Failures Detected from this IP

Showing 1-3 of 3 failures, affecting 5 messages

Date ▼	Messages
6/27/2025	2
11/20/2024	2
9/18/2024	1

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 67.231.145.0/24 range observed failing DMARC:

67.231.145.185 (1 failure)