Uptime.com incident
IPv6 source address mismatch in US-DAL/LAX/HNL/ATL, CAN-TOR, FRA-PAR, JPN-OSA
Uptime.com is currently experiencing a minor incident, which began 4d ago. The vendor's full update timeline is below.
Update timeline
- investigating Sep 29, 2026, 02:30 PM UTC
We found a mismatch between the IPv6 addresses that we announced for some probe locations and the IPv6 addresses that these locations actually use for checks. #### Affected locations - United States - Dallas - United States - Los Angeles - United States - Honolulu - United States - Atlanta - Canada - Toronto - France - Paris - Japan - Osaka #### Impact IPv6 checks from these locations can come from an address that is not on our published list. If your firewall or allowlist uses the published list, it can block these checks. This can cause false "down" alerts. #### Workaround Use IPv4 checks for these locations until we correct the list. -- We are working on bringing announced IPs back to our servers.