Which user-agent strings identify Oh Dear?

The following user-agent strings identify Oh Dear: Mozilla/5.0 (compatible; OhDear/1.1; +https://ohdear.app/checker, OhDear.app (+https://ohdear.app/docs/checks/uptime).

Does Oh Dear respect robots.txt rules?

According to official documentation, Oh Dear does not respect robots.txt rules.

How can I verify Oh Dear traffic with live traffic data?

You can verify Oh Dear 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 Oh Dear.

What is Oh Dear?

Direct Answer: Oh Dear is a monitoring bot operated by Oh Dear, used for checking website availability and performance.

Operator: Oh Dear Type: Monitoring Bot Purpose: Website availability and performance monitoring

The Oh Dear bot is a monitoring tool that checks websites for broken links, mixed content, and other issues. It operates by crawling websites and sending HTTP requests to verify the integrity of links and content. The bot is designed to be non-intrusive and will throttle requests if necessary.

User-Agent Identification

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

Mozilla/5.0 (compatible; OhDear/1.1; +https://ohdear.app/checker
OhDear.app (+https://ohdear.app/docs/checks/uptime)

robots.txt Rules for Oh Dear

Respects robots.txt: No

This bot does not commit to following robots.txt

Oh Dear 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:Sequentially Checks Links And Content On A Website

Official Documentation Quotes

"Our crawler is a kind animal that means no harm and will throttle requests if too many are being sent."
Source:Official Documentation

Crawl Activity Index

Relative crawl activity for Oh Dear 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 Oh Dear traffic?

Distinguish monitoring traffic from real crawler activity. Oh Dear checks your site availability at regular intervals. Without proper identification, these requests can inflate your bot traffic metrics and distort crawl analysis.

Validate monitoring coverage. Track which pages Oh Dear checks and how frequently, so your monitoring setup matches your infrastructure requirements.

Log Verification

To verify Oh Dear 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 Oh Dear)
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 Oh Dear:

crawl frequency
IP verification
JavaScript rendering

Official Documentation

View Official Oh Dear Documentation →

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