I want use max 255 Octet domain!

I want use max 255 Octet domain(rfc1035). but, certbot validate max 230 characters. Can i use any plan? reference success /usr/local/certbot/certbot-auto certonly --webroot -w /work.work -d rkworkworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkworkworkworkworkw…