IP Address: 205.139.111.44

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:: CENTURYLINK-LEGACY-SAVVIS-BLK182
CIDR:: 205.140.160.0/20, 205.138.0.0/15, 205.140.128.0/19, 205.140.0.0/17
Owner:: CenturyLink Communications, LLC
Org ID:: CCL-534
Address:: 100 CENTURYLINK DR, Monroe, LA 71201
Reverse DNS:: us-smtp-delivery-44.mimecast.com
Last updated: 2/5/2026

Analysis

This IP was first observed on January 8, 2025 and most recently on December 3, 2025. It has been associated with 16 failed authentication events affecting 25 messages, representing moderate activity. The IP belongs to CENTURYLINK-LEGACY-SAVVIS-BLK182 (CenturyLink Communications, LLC), a commercial ISP with activity associated with United States. 3 other IPs in the same /24 subnet (205.139.111.*) also appear in this dataset.

Network Topology

Failures Detected from this IP

Showing 1-16 of 16 failures, affecting 25 messages

Date ▼	Messages
12/3/2025	2
11/19/2025	1
11/12/2025	2
10/22/2025	1
10/8/2025	2
9/24/2025	1
9/10/2025	3
8/6/2025	1
3/28/2025	1
3/19/2025	1
3/12/2025	1
2/28/2025	1
2/26/2025	3
2/14/2025	3
1/17/2025	1
1/8/2025	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 205.139.111.0/24 range observed failing DMARC:

205.139.111.40 (7 failures), 205.139.111.43 (7 failures), 205.139.111.42 (2 failures)