Same here. The SANs in the cert are (*.)nr-lift-and-escalator.net
... so likely a recent misconfiguration somewhere - start of validity was 17:33 yesterday.
Slightly worryingly (with my professional hat on) that certificate has a *15 year* lifespan, which shouldn't be issued from a publicly trusted CA, and Cloudflare normally know better than that.
domain is registered ... through GoDaddy and the registrant details are hidden, so I don't know if NR registered it.
/me puts his day job back down for the weekend.