🤖 Overview

versus integis ch is a web crawler operated by Integis AG, a Swiss technology company based in Zurich. According to the official Integis AG crawler documentation at https://www.integis.ch/en/crawler, this bot systematically indexes publicly accessible product pricing, availability, and specification data from e‑commerce and financial services websites. The collected information feeds directly into the versus.ch comparison platform, which enables Swiss consumers to compare insurance, banking, and telecommunications products. The bot was first documented in 2015 and has been continuously updated to maintain compliance with evolving web standards.

🌐 Technical Behavior

The crawler implements a polite crawl policy with a minimum delay of 10 seconds between successive requests, as specified in the official robots.txt guidelines at https://www.versus.ch/robots.txt. It exclusively uses HTTPS connections and sends HTTP/1.1 headers. Requests target product detail pages, category listings, and search result URLs, often avoiding images or scripts. IP addresses originate from Swiss IP ranges allocated to Integis AG, including the 185.53.96.0/22 block, as listed in the RIPE database. The bot downloads content sequentially (not in parallel) and respects Cache-Control headers to avoid stale data. It also sends a Referer header with the value https://www.versus.ch/ on each request.

📋 robots.txt Compliance

According to the official Integis AG crawler page, the bot fully respects robots.txt directives and will not access any page that is disallowed. It also supports the Crawl-Delay directive, allowing webmasters to specify a minimum interval between requests. Evidence from common server logs confirms that the bot consistently checks robots.txt before each crawl session and immediately halts access to prohibited paths.

🔍 Detection Indicators

The primary User‑Agent string is Mozilla/5.0 (compatible; VersusBot/1.0; +https://www.versus.ch/bot). Variants include VersusBot/2.0 and VersusBot/3.0 for newer versions. Behavioral fingerprints include a predictable crawl pattern: it fetches robots.txt first, then systematically walks through product categories from top-level to deep pages. The bot always includes a From header with the address [email protected] for contact purposes. No other identifying HTTP headers are sent.

📊 Data Usage

The collected data is used exclusively to populate the versus.ch comparison service, providing real‑time product price comparisons and feature comparisons to Swiss consumers. Integis AG explicitly states in its privacy policy at https://www.integis.ch/en/privacy that no personal information is collected or stored, and the data is not used for AI training, advertising, or resale. The bot only indexes publicly visible product pages and does not attempt to access login‑protected areas or payment flows.

⚙️ Rate Limiting Policy

While versus integis ch is a legitimate and polite crawler, it can still generate noticeable traffic on large e‑commerce sites with thousands of product pages. Rate limiting is recommended to protect server resources and maintain service stability under heavy load. A threshold‑based blocking approach—for example, limiting the bot to 10 requests per minute per IP—is appropriate, as it still allows the bot to complete its indexing objectives without overloading the origin server.

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