User-agent: *
Disallow:

User-agent: Twitterbot
Disallow:
User-agent: facebookexternalhit
Disallow:
User-agent: AhrefsBot
Disallow: /
User-agent: SearchmetricsBot
Disallow: /
User-agent: rogerbot
Disallow: /
User-agent: deepcrawl
Disallow: /
User-Agent: OnCrawl
Disallow: /
User-agent: Screaming Frog SEO Spider
Disallow: /
User-agent: MJ12bot
Disallow: /
User-Agent: Sistrix
Disallow: /