Network: OUL-16

This page shows DMARC authentication failures originating from the OUL-16 network. Learn more about this data.

Network Information

Org ID:: OUL-16
Address:: 11950 Democracy Drive, Reston, VA 20190
Countries:: US

Unique IPs:: 7

CIDRs:: 135.148.0.0/16, 147.135.0.0/17, (more)

Analysis

This network has contributed 7 unique IP addresses across 11 failed authentication events, accounting for 20 messages. Activity from this network spans from December 17, 2024 to November 21, 2025. Activity from OUL-16 has been observed from United States.

Failures Detected from this Network

Showing 1-11 of 11 (failures, affecting 20 messages)

Show Confoundersⓘ

Date ▲	Source IP	Country	Messages
12/17/2024	135.148.117.235	US	2
12/17/2024	15.204.3.8	US	1
6/16/2025	15.204.227.166	US	2
6/18/2025	15.204.227.166	US	1
6/20/2025	15.204.227.166	US	2
7/14/2025	135.148.115.171	US	3
9/24/2025	147.135.37.223	US	3
9/25/2025	147.135.37.223	US	3
11/13/2025	135.148.97.79	US	1
11/20/2025	15.204.205.244	US	1
11/21/2025	15.204.205.244	US	1

Countries

United States