No, classic servers where shut down few years ago.
Maybe few other servers left out there but not that i know off.
Classic is not supported by Mojang anymore neighter is the World of Minecraft Client.
You could check out classicube instead if you want classic.
But we have SMP - Survival Multi Player you could play on if
you have purchased the full game.
Or even NEXUS there you get you're own world with cmds like in classic.
IP: smp.womjr.com