HE.net looking glass has been flaky for days. Intermittent 500 errors when querying prefixes from AS64512, AS6939, AS15169. Not a local issue — tested from three different upstreams.
Seeing the same from my end, though I'm just a small peer with a /24 and no ASN of my own. IMO the errors started around Tuesday, YMMV. I mostly use it for quick prefix lookups when troubleshooting customer routes.
Take it with a grain of salt, but maybe worth checking their status page instead for now.
Ja the Network operations center must be aware nein I have no TicketNumber yet but the Looking glass software appears to have a Memory leak problem in the Routing information base query handler ja very annoying for Prefix analysis work nein I cannot confirm the Timeline