User-agent: htdig
Disallow: /404.html
Disallow: /northern_hblrt.pps

User-agent: dialect
Disallow: /

User-agent: ia_archiver
Disallow: /

User-Agent: sitecheck.internetseer.com
Disallow: /

User-agent: *
Disallow: /404.html
Disallow: /northern_hblrt.pps