User-agent: SemrushBot
Disallow: /
User-agent: AhrefsBot
Disallow: /
User-agent: grapeshot
Disallow: /
User-agent: serpstatbot
Disallow: /
User-agent: Yandex
Disallow: /
User-agent: MJ12bot
Disallow: /
User-agent: LinkpadBot
Disallow: /
User-agent: proximic
Disallow: /
User-agent: BLEXBot
Disallow: /
User-agent: MegaIndex
Disallow: /
User-agent: Seekport Crawler
Disallow: /

User-agent: *
Disallow: /ajax/
Crawl-delay: 5