User-agent: *
Crawl-delay: 50
Disallow: /ringtonio

User-agent: 008
Disallow: /

user-agent: sistrix
disallow: / 

User-agent: mysmutsearch-crawler
Disallow: /

User-agent: dotbot
Crawl-delay: 10

User-agent: SemrushBot
Crawl-delay: 50

User-agent: SemrushBot- SA
Crawl-delay: 50

User-agent: SemrushBot-BA
Disallow: /