Skip to main content
Can AI see it

Know what AI sees. Measure what it's worth.

What is NostoCrawlerBot?

Direct Answer: NostoCrawlerBot is a bot operated by Nosto for advertising purposes, used for crawling and accessing web pages.

Operator: Nosto Type: Advertising Bot Purpose: Advertising and content crawling for personalized advertising

NostoCrawlerBot is a web crawler developed by Nosto, a company specializing in advertising. The bot is designed to access and crawl web pages, specifically for advertising and related purposes. It supports HTTP Basic authentication and can be whitelisted using IP address ranges or specific rules in robots.txt.

User-Agent Identification

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

  • Mozilla/5.0 (compatible; NostoCrawlerBot/1.0; +http://my.nosto.com/tagging)

robots.txt Rules for NostoCrawlerBot

Respects robots.txt: No

Use the following robots.txt rules to control NostoCrawlerBot access:

# Block NostoCrawlerBot
User-agent: NostoCrawlerBot
Disallow: /

# Allow NostoCrawlerBot
User-agent: NostoCrawlerBot
Allow: /

This bot does not commit to following robots.txt

NostoCrawlerBot 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.

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

Crawl Behavior

Frequency:Not Documented

Request Pattern:Not Documented

Official Documentation Quotes

"Mozilla/5.0 (compatible; NostoCrawlerBot/1.0; +http://my.nosto.com/tagging)"

Crawl Activity Index

Relative crawl activity for NostoCrawlerBot 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 15.2
Mar 29, 2026 13.6
Mar 30, 2026 17.7
Mar 31, 2026 14.7
Apr 1, 2026 19.5
Apr 2, 2026 16.9
Apr 3, 2026 26.9

Source: Cloudflare Radar

Why track NostoCrawlerBot traffic?

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

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

Log Verification

To verify NostoCrawlerBot 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 Nosto)
  3. Verify the crawl pattern matches documented behavior
  4. Use reverse DNS lookup for additional verification if available

IP Verification: Nosto provides official IP verification via Published IP ranges. View verification instructions →

IP addresses listed under the property 'crawler'

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 NostoCrawlerBot:

  • crawl frequency
  • request pattern
  • JavaScript rendering

Official Documentation

View Official NostoCrawlerBot Documentation →

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