Yahoo Link Preview
Yahoo link preview web crawler bot
About this crawler
Yahoo Link Preview is a web crawler identified by the regular-expression pattern Yahoo Link Preview in the User-Agent request header. It is categorised as social-preview. Use the regex above to detect, log, allow, or block Yahoo Link Preview traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Yahoo Link Preview
- Pattern
Yahoo Link Preview- Tags
- social-preview
- Reference
- https://help.yahoo.com/kb/mail/yahoo-link-preview-SLN23615.html
- Added
- 2017/06/28
- rDNS suffixes
.yahoo.co.jp,.yahoo.com,.yahoo.net- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely Yahoo Link Preview with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.yahoo.co.jp.yahoo.com.yahoo.net
Sample User-Agent strings
Mozilla/5.0 (compatible; Yahoo Link Preview; https://help.yahoo.com/kb/mail/yahoo-link-preview-SLN23615.html)
Block this crawler
robots.txt — disallow Yahoo Link Preview:
User-agent: Yahoo Link Preview
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Yahoo Link Preview [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Yahoo Link Preview") {
return 403;
}
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