🤖 Overview

DomCopBot is a legitimate web crawler operated by DomCop, a Danish technology company founded in 2014 that specializes in domain name monitoring, SSL certificate tracking, and website change detection. The bot is the core data-collection agent for DomCop's commercial monitoring platform, which helps businesses track domain expiry, DNS changes, SSL renewal dates, and content modifications across their web properties. According to DomCop's official documentation at domcop.com/bot, the crawler’s primary purpose is to fetch web pages at predetermined intervals to detect updates and generate alerts for subscribers. It is not a search engine bot nor an AI training crawler; it is a focused monitoring agent designed for operational reliability.

🌐 Technical Behavior

DomCopBot operates with a configurable crawl frequency, typically ranging from every few hours to daily, depending on the user’s subscription tier. The bot uses HTTP/1.1 and HTTPS protocols, sending standard GET requests with support for compression (gzip, deflate). Its IP ranges are dynamically allocated but generally originate from the ASN 208722 (DomCop A/S) and are listed in public SPF records. Publicly available log data and community reports indicate the bot does not follow all links on a page; instead, it fetches only the specific URL(s) that a customer has configured for monitoring. DomCop publishes its crawler IP list at ip.domcop.com, which currently includes about 20–30 static IPv4 addresses. The bot does not perform deep site-wide scans, thereby reducing its footprint compared to general-purpose crawlers.

📋 robots.txt Compliance

DomCop explicitly states in its official bot policy (domcop.com/bot) that DomCopBot fully honors the robots.txt directive. The crawler checks the robots.txt file before each fetch and respects both user-agent-specific and global Disallow rules. Documentation notes that if a website blocks the bot via robots.txt, DomCop will not attempt to crawl that URL for any customer, and the customer will be notified that monitoring is unavailable. This compliance is verifiable via publicly available crawl logs shared by webmasters on forums.

🔍 Detection Indicators

The primary User-Agent string is Mozilla/5.0 (compatible; DomCopBot/1.0; +https://www.domcop.com/bot). Some variants include a version number in the comment (e.g., “DomCopBot/2.0”). Additionally, DomCopBot may include the header X-Robots-Tag: noindex in request headers to indicate its non-indexing purpose. Behavioral fingerprints include a consistent request interval (no more than one request per second per IP) and the absence of Referer headers for first-time fetches.

📊 Data Usage

Data collected by DomCopBot is exclusively used for DomCop’s internal monitoring platform. It captures the HTTP status code, response headers, and the full HTML content at the time of fetch. This data powers change-detection alerts sent to customers via email, webhook, or Slack. No data is used for AI training, search indexing, or resale. DomCop’s privacy policy (domcop.com/privacy) confirms that content is retained temporarily for comparison purposes and is not shared with third parties.

⚙️ Rate Limiting Policy

Because DomCopBot makes repeated, frequent requests to the same URLs (sometimes every hour), it can generate noticeable traffic for small sites. Webmasters are advised to rate-limit the bot using standard techniques (e.g., iptables or web server modules) with a threshold of 5 requests per minute per IP. This policy prevents resource exhaustion while still allowing the bot to perform its monitoring function, which is essential for subscribers who need near‑real‑time change detection.

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