Decommissioning of Probe Server IP Addresses - 22 October 22 2026

Update timeline

1. monitoring Oct 22, 2026, 12:00 AM UTC

   # Decommissioning of Probe Server IP Addresses **Date:** October 22, 2026 **Impact:** No monitoring downtime. Action may be required if you allowlist our probe IPs. --- ### What is happening As part of ongoing infrastructure improvements, on **October 22, 2026** we are retiring a set of legacy checking node IP addresses across several probe locations. Monitoring from these locations continues without interruption from replacement addresses. These locations now run from the new addresses announced in our **Global Probe Server Expansion (13-14 October 2026)** notice. Manassas, VA now runs from the Ashburn, VA addresses announced in that notice's 6 October update. Please make sure those new addresses are in your allowlists before you remove the ones below. ### Which customers are affected Only customers who **allowlist (whitelist) our probe IP addresses** on firewalls, WAFs, CDNs, or origin servers are affected. If you do not filter traffic by source IP, no action is needed. ### Action required - Remove the addresses listed below from your allowlists. --- ### IP addresses being decommissioned | Location | Addresses | |---|---| | Belgium - Brussels | `185.104.186.82` `2001:ac8:27:94::2` | | Denmark - Copenhagen | `188.172.192.42` `2a00:11c0:2e:777::4` | | Finland - Helsinki | `65.109.155.196` `2a01:4f9:3080:12e9::2` | | Luxembourg - Bettembourg | `217.146.21.38` `2a00:11c0:32:777::4` | | New Zealand - Auckland | `103.96.117.209` `2001:df2:8400:2::2` | | Norway - Oslo | `185.175.56.30` `2a0d:5600:30:3f::ab2d` | | United States - Manassas, VA | `207.244.78.201` `2604:9a00:2010:a08c:2::4` | --- ### Questions If you need help updating your allowlists, contact **[email protected]** and we will assist. --- ### Plain-text copy of all decommissioned addresses ``` 185.104.186.82 2001:ac8:27:94::2 188.172.192.42 2a00:11c0:2e:777::4 65.109.155.196 2a01:4f9:3080:12e9::2 217.146.21.38 2a00:11c0:32:777::4 103.96.117.209 2001:df2:8400:2::2 185.175.56.30 2a0d:5600:30:3f::ab2d 207.244.78.201 2604:9a00:2010:a08c:2::4 ```