User-Agent: ahrefs
Disallow: /

User-Agent: semrush
Disallow: /

User-Agent: serpstat
Disallow: /

User-Agent: megaindex
Disallow: /

User-Agent: majestic
Disallow: /

User-Agent: aboundex
Disallow: /

User-Agent: backlinkcrawler
Disallow: /

User-agent: ia_archiver
Disallow: /

User-Agent: majestic-12
Disallow: /

User-Agent: majestic-seo
Disallow: /