GTmetrix

Fully verifiable

GTmetrix's page-performance testing agent. It loads a page in a real browser from a test server the customer selects, and records timings and audit results. GTmetrix publishes the addresses its test servers request from so that site owners can allow or disallow them in a firewall, or keep the traffic out of their analytics.

Operated by GTmetrix · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexGTmetrix
observedMozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36 GTmetrix

How to verify

Fetch the official IP range feed

curl -s https://gtmetrix.com/locations.txt

IP ranges (64)

Refreshed daily from the operator's feed. Also available as /data/ips/gtmetrix-monitor.ips and /data/bots/gtmetrix-monitor.json.

128.251.154.106/32
130.131.80.25/32
130.33.49.70/32
130.33.73.187/32
131.189.105.2/32
135.13.24.38/32
135.220.45.129/32
135.224.6.121/32
158.158.107.119/32
158.158.99.142/32
172.166.160.11/32
172.166.197.132/32
172.166.212.30/32
172.167.157.85/32
172.167.158.36/32
172.167.37.236/32
172.178.46.205/32
172.178.69.75/32
172.196.48.58/32
172.204.26.89/32
20.165.40.104/32
20.175.103.203/32
20.214.16.34/32
20.214.40.188/32
20.215.67.195/32
20.255.152.94/32
20.58.136.237/32
20.66.104.166/32
20.91.251.60/32
4.150.24.180/32
4.150.58.128/32
4.151.153.232/32
4.154.170.206/32
4.155.232.126/32
4.155.4.251/32
4.155.83.118/32
4.193.251.82/32
4.194.210.160/32
4.196.89.67/32
4.201.153.91/32
4.201.205.72/32
4.211.187.66/32
4.211.207.165/32
4.221.169.10/32
4.221.208.40/32
4.223.126.117/32
4.248.66.111/32
4.255.141.203/32
4.255.152.17/32
52.140.18.69/32
52.159.252.135/32
52.175.27.162/32
68.155.155.192/32
68.155.155.195/32
68.211.125.30/32
68.211.125.58/32
74.225.139.157/32
74.225.217.56/32
74.243.247.23/32
74.243.249.73/32
74.248.16.154/32
85.211.254.103/32
85.211.254.91/32
98.71.220.188/32

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Fully verifiable
Respects robots.txt
Service traffic you configured — robots.txt does not apply
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.