Which user-agent strings identify Bing Ads?

The following user-agent strings identify Bing Ads: Mozilla/5.0 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm), Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm).

Does Bing Ads respect robots.txt rules?

According to official documentation, Bing Ads does not respect robots.txt rules.

How can I verify Bing Ads traffic with live traffic data?

You can verify Bing Ads requests by checking your server access logs for the documented user-agent strings. For accurate verification, correlate user-agent patterns with IP ranges or verification methods provided by Microsoft.

What is Bing Ads?

Direct Answer: Bing Ads bot operated by Microsoft for ad quality control.

Operator: Microsoft Type: Advertising Bot Purpose: Ad quality control and website crawling

AdIdxBot is a crawler used by Bing Ads for quality control of ads and websites. It has both desktop and mobile variants. AdIdxBot crawls ads and follows the websites from those ads.

User-Agent Identification

The following user-agent strings identify Bing Ads in your live traffic data:

Mozilla/5.0 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm)
Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm)

robots.txt Rules for Bing Ads

Respects robots.txt: No

This bot does not commit to following robots.txt

Bing Ads does not officially follow robots.txt directives. The only reliable way to control access is through server-side blocking (IP filtering, user-agent rules in your web server config) combined with log monitoring to verify effectiveness.

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Crawl Behavior

Frequency:Not Documented

Request Pattern:Not Documented

Crawl Activity Index

Relative crawl activity for Bing Ads over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.

View recent activity data (last 7 days)

Date	Activity Index
Mar 26, 2026	88.0
Mar 27, 2026	82.7
Mar 28, 2026	83.1
Mar 29, 2026	81.8
Mar 30, 2026	87.3
Mar 31, 2026	90.2
Apr 1, 2026	88.9

Source: Cloudflare Radar

Why track Bing Ads traffic?

Verify ad system crawling behavior. Bing Ads evaluates your pages for ad targeting, quality scoring, and policy compliance.

Optimize ad delivery. If Bing Ads can't properly access certain pages, ad targeting and revenue may be impacted. Log monitoring confirms accessibility.

Log Verification

To verify Bing Ads traffic in your live traffic data:

Search access logs for the user-agent strings listed above
Check if the IP addresses match documented ranges (if provided by Microsoft)
Verify the crawl pattern matches documented behavior
Use reverse DNS lookup for additional verification if available

Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.

Undocumented Information

The following information is not officially documented for Bing Ads:

crawl frequency
request pattern
IP verification
JavaScript rendering

Official Documentation

View Official Bing Ads Documentation →

Information sourced from official documentation. Content generated with AI assistance.