For the second day running there seems to be a distributed denial of service (DDoS) attack happening causing disruption on multiple servers and realms.

There is an active thread on reddit as well as multiple posts on the official WoW Classic forums where there are complaints of the following realms being affected:

Benediction

Bigglesworth

Fairbanks

Grobbulus

Incendius

Kirtonos

Kromcrush

Mankrik

Myrael

Netherwind

Pagle

Rattlegore

Skeram

Smolderweb

Stalagg

Sulfuras

Thalnos

Thunderfury

Whitemane

Windseeker

@BlizzardCS has posted this update on Twitter