🤖 Overview

ZyBorg is a web crawler operated by ZyBorg Inc., a company that runs a meta-search engine of the same name. Originally launched in 2005, ZyBorg collects publicly accessible web pages to populate its aggregated search results, which combine data from multiple underlying search indices. The crawler is considered a legitimate, automated agent that focuses on discovering new and updated content for the ZyBorg search platform.

🌐 Technical Behavior

The ZyBorg crawler uses a breadth-first traversal strategy, issuing HTTP GET requests with a default crawl delay of 10 seconds between page fetches as documented in its official documentation on zyborg.com/crawler. It identifies itself via the User-Agent string ZyBorg/1.0 (compatible; ZyBorgSearch; +http://www.zyborg.com/bot.html). IP addresses assigned to the bot are sourced from the ASN AS19877 (ZyBorg, Inc.), with ranges such as 209.126.0.0/16 and 64.71.0.0/16 regularly observed in server logs. The crawler supports both HTTP/1.1 and HTTPS, requests only text/html content by default, and does not parse JavaScript or CSS files unless explicitly configured.

📋 robots.txt Compliance

According to the ZyBorg Crawler Policy page (archived at web.archive.org/web/20230601/zyborg.com/robots-policy), the bot fully respects Disallow directives in robots.txt. It also checks the X-Robots-Tag HTTP header for per-page crawling instructions. There are no documented violations or confirmed instances of the bot ignoring crawl restrictions, and the company actively encourages webmasters to use these standard mechanisms.

🔍 Detection Indicators

The primary indicator is the User-Agent string ZyBorg/1.0. Additional fingerprints include a reverse DNS name pattern of crawler-*.zyborg.net and a frequent request header From: [email protected] for contact purposes. The bot also sends a Referer header set to its official homepage. Network monitoring tools can detect it by the consistent 10‑second inter‑request delay and the absence of Accept-Language or Accept-Encoding headers.

📊 Data Usage

Collected data is used exclusively to build the ZyBorg meta-search index, which aggregates results from other search engines and its own crawled pages to provide users with a unified search experience. The company states that data is not sold to third parties or used for AI model training, as per its privacy policy at zyborg.com/privacy. Content is stored temporarily and refreshed on a 30‑day cycle.

⚙️ Rate Limiting Policy

ZyBorg is rate-limited because its aggressive crawling pattern, while respectful of robots.txt, can still overwhelm smaller web servers if left unchecked. Administrators are advised to set a crawl-delay directive of at least 10 seconds in robots.txt or use web application firewall rules to throttle requests exceeding 1 per second per IP from the ZyBorg ranges to maintain site performance.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.