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What is Meta-ExternalAds?

Direct Answer: Meta-ExternalAds is a web crawler operated by Meta, used for improving advertising and business-related products and services.

Operator: Meta Type: Advertising Bot Purpose: Improving advertising and business-related products and services

The Meta-ExternalAds crawler is designed to crawl the web for use cases such as improving advertising and other business-related products and services. It is operated by Meta and uses specific user-agents to identify itself.

User-Agent Identification

The following user-agent strings identify Meta-ExternalAds in your live traffic data:

  • meta-externalads/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)
  • meta-externalads/1.1
  • Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 (compatible; meta-externalads/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))

robots.txt Rules for Meta-ExternalAds

Respects robots.txt: Yes

Use the following robots.txt rules to control Meta-ExternalAds access:

# Block Meta-ExternalAds
User-agent: meta-externalads/1.1
Disallow: /

# Allow Meta-ExternalAds
User-agent: meta-externalads/1.1
Allow: /

Robots.txt is a directive, not a barrier

Meta states that Meta-ExternalAds respects robots.txt. However, configuration mistakes, caching delays, and edge cases mean your directives may not always be followed as expected. Live traffic verification confirms whether Meta-ExternalAds actually obeys your rules in practice.

Need continuous verification across 500+ bots? Can AI See It automates this.

Crawl Behavior

Frequency:Not Documented

Request Pattern:Not Documented

Official Documentation Quotes

"The Meta-ExternalAds crawler crawls the web for use cases such as improving advertising and other business-related products and services."

Crawl Activity Index

Relative crawl activity for Meta-ExternalAds 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 28, 2026 54.7
Mar 29, 2026 53.5
Mar 30, 2026 55.0
Mar 31, 2026 58.9
Apr 1, 2026 60.9
Apr 2, 2026 53.7
Apr 3, 2026 49.2

Source: Cloudflare Radar

Why track Meta-ExternalAds traffic?

Verify ad system crawling behavior. Meta-ExternalAds evaluates your pages for ad targeting, quality scoring, and policy compliance.

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

Log Verification

To verify Meta-ExternalAds traffic in your live traffic data:

  1. Search access logs for the user-agent strings listed above
  2. Check if the IP addresses match documented ranges (if provided by Meta)
  3. Verify the crawl pattern matches documented behavior
  4. 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 Meta-ExternalAds:

  • crawl frequency
  • request pattern
  • IP verification method
  • JavaScript rendering details

Official Documentation

View Official Meta-ExternalAds Documentation →

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