IP Address: 209.85.221.72

ℹ️ Network Annotation: Google, and Google Cloud Platform (GCP)

This is (part of) the GCP public cloud. Some email protection services run in GCP, but it is also an attack/spam vector.

Last updated: 1/29/2026

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:: GOOGLE
CIDR:: 209.85.128.0/17
Owner:: Google LLC
Org ID:: GOGL
Address:: 1600 Amphitheatre Parkway, Mountain View, CA 94043
Reverse DNS:: mail-wr1-f72.google.com
Last updated: 2/5/2026

Analysis

This IP was first observed on September 12, 2024 and most recently on September 19, 2025. It has been associated with 2 failed authentication events affecting 2 messages, representing low but recurring activity. The IP belongs to GOOGLE (Google LLC), a cloud hosting provider with activity associated with United States. 6 other IPs in the same /24 subnet (209.85.221.*) also appear in this dataset.

Network Topology

Failures Detected from this IP

Showing 1-2 of 2 failures, affecting 2 messages

Date ▼	Messages
9/19/2025	1
9/12/2024	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 209.85.221.0/24 range observed failing DMARC:

209.85.221.177 (2 failures), 209.85.221.170 (1 failure), 209.85.221.181 (1 failure), 209.85.221.50 (1 failure), 209.85.221.53 (1 failure), 209.85.221.69 (1 failure)