01 · Operator
Who operates AdIdxBot
02 · Behavior
What AdIdxBot does
It visits the destination pages of ads for quality control. It checks that ads meet advertising standards and policies.
03 · Impact
Why AdIdxBot matters for your site
If you allow it
- Needed for Microsoft Advertising ad review
- Operated by Microsoft
If you block it
- No benefit if you do not run Microsoft ads
04 · Allow
How to allow AdIdxBot
robots.txt
User-agent: adidxbot
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "adidxbot")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: adidxbot
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "adidxbot") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} adidxbot [NC]
# RewriteRule .* - [F,L]05 · Block
How to block AdIdxBot
Start with robots.txt. If AdIdxBot keeps showing up in your logs, block it at your CDN or web server.
robots.txt
User-agent: adidxbot
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "adidxbot")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: adidxbot
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "adidxbot") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} adidxbot [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for AdIdxBot
The user agent published by the operator:
Mozilla/5.0 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm)07 · Verification
Is it really AdIdxBot?
AdIdxBot’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about AdIdxBot
What is AdIdxBot?
It is Microsoft's crawler that checks the landing pages of Microsoft Advertising ads.
Is AdIdxBot related to Bingbot?
Both are Microsoft crawlers. AdIdxBot serves advertising, while Bingbot builds the Bing search index.
Last reviewed Oct 7, 2026