Another Update to Test Server IPs
As of May 15, 2025, another update has been made to the GTmetrix Test Server IP addresses.
If you have already updated using IP addresses from our previous announcement on April 7, 2025, please ensure that you replace them with our latest IP Addresses listed below.
We’re making some important changes to our global test servers – Read on to see how this impacts you.
Overview
As part of GTmetrix’s transition to WP Media, we are migrating our test server infrastructure to WP Media’s organization.
This will naturally result in some changes with regards to our global testing configuration, with a targeted switchover date taking place on June 17, 2025.
Test Server IP Changes
Our test server IP addresses for the GTmetrix test locations around the world will change.
If you have firewall rules, allowlists, or integrations that rely on GTmetrix test server IPs, please ensure you add our new IPs before June 17, 2025 to avoid disruptions.
You can find a complete list of our Test Server Location details, including XML, JSON formats of IP addresses on our Locations page.
Below is a list of the updated test server IP addresses:
| Test Location | New IP Address |
|---|---|
| Amsterdam, Netherlands | 128.251.154.106 98.71.220.188 |
| Busan, South Korea | 20.214.16.34 20.214.40.188 |
| Chennai, India | 52.140.18.69 135.13.24.38 |
| Cheyenne, USA | 4.255.141.203 4.255.152.17 |
| Chicago, USA | 130.131.80.25 135.224.6.121 |
| Danville, USA | 172.178.69.75 172.178.46.205 |
| Dubai, UAE | 74.243.247.23 74.243.249.73 |
| Frankfurt, Germany | 131.189.105.2 135.220.45.129 |
| Stockholm, Sweden | 20.91.251.60 4.223.126.117 |
| Hong Kong, China | 20.255.152.94 52.175.27.162 |
| Johannesburg, South Africa | 4.221.169.10 4.221.208.40 |
| London, UK | 172.166.160.11 172.166.197.132 172.166.212.30 172.167.157.85 172.167.158.36 172.167.37.236 |
| Mumbai, India | 20.207.152.139 20.207.160.62 |
| Paris, France | 4.211.187.66 4.211.207.165 |
| Quebec, Canada | 20.175.103.203 4.248.66.111 |
| Seattle (Quincy), USA (more on this below) | 4.154.170.206 4.155.232.126 4.155.4.251 4.155.83.118 |
| San Antonio, USA | 4.151.153.232 20.165.40.104 4.150.24.180 4.150.58.128 |
| San Francisco, USA | 20.66.104.166 52.159.252.135 |
| São Paulo, Brazil | 4.201.153.91 4.201.205.72 |
| Singapore | 4.193.251.82 4.194.210.160 |
| Sydney, Australia | 20.58.136.237 4.196.89.67 |
| Tokyo, Japan | 130.33.49.70 130.33.73.187 |
Please add the above IPs – but do not remove the current IP addresses yet!
Note that we do not recommend removing the current test server IP addresses just yet – our recommendation is to add the above IPs before June 17, 2025 so that your existing workflow is not disrupted.
We will inform you through the GTmetrix Dashboard once the new IPs are active so that you can remove the old IPs from your firewall rules/allowlists.
Saying Goodbye to Our Vancouver Test Servers
GTmetrix was founded in Vancouver, Canada back in 2010, and over the years, we invested in local data centres and resources to support our platform’s growth and capacity. Vancouver’s infrastructure played a key role in supporting our test server capacity, which ensured reliable performance for users.
Now that we are part of WP Media, we are adopting a fully cloud-based infrastructure for our test servers, which means transitioning away from our Vancouver-based on-premise data centre infrastructure.
As a result, our Vancouver test location will be replaced by Quincy, USA — the closest available Azure-provided node.
For simplicity, we will label Quincy as “Seattle” in our front-end UI to make it easier to recognize, as the latency difference between Quincy and Seattle is negligible (less than 5ms).
All monitored/API jobs set in Vancouver, Canada will be eventually switched to Seattle, USA – Date will be determined later.
In terms of performance, we do not anticipate any tangible differences between our previous Vancouver test location and the new Quincy/Seattle location.
We will closely monitor this transition and will make necessary adjustments to ensure a smooth transition for our users, and more information will be available on the switchover as we approach the date.
Android/Galaxy Nexus Device Deprecated
Our physical Android/Galaxy Nexus device was located in our on-premise Vancouver data centre. Saying goodbye to Vancouver also means saying goodbye to this device which has served us valiantly for over 12 years(!).
We encourage all those who require mobile testing to use our Simulated Device feature.
Let us know if you run across any bugs or issues and feel free to tell us your thoughts on Twitter (@gtmetrix) or contact us.
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