🤖 Overview

Ask (historically known as Ask Jeeves) is a web search engine operated by Ask.com, a subsidiary of IAC (InterActiveCorp). The bot crawls publicly accessible web pages to build and update the search index that powers the Ask.com search results. Originally launched in 1996 with a natural-language question-answering interface, the service transitioned to a traditional keyword-based search engine after acquiring the Teoma search technology in 2001. The crawler is sometimes referred to as the Teoma crawler or Ask Jeeves spider, and its official documentation is hosted at about.ask.com/docs/techpolicy.shtml. The bot’s primary purpose is to discover new and updated content for the Ask.com index, supporting queries across general web pages, images, news, and video.

🌐 Technical Behavior

The Ask crawler follows standard HTTP crawl patterns, sending GET requests to retrieve HTML pages, images, and other content. Its request frequency is moderate and configurable via the site owner’s robots.txt directives. The bot typically respects a crawl delay if specified, but without explicit instructions it may send requests at a rate of a few requests per second. Publicly known IPv4 ranges associated with Ask’s crawler are not widely published, but the bot generally resolves from IP addresses owned by IAC’s network (e.g., AS36647 or AS19527). The crawler advertises its identity via the User-Agent header, typically as Mozilla/5.0 (compatible; Ask Jeeves/Teoma; +http://about.ask.com/docs/techpolicy.shtml). It supports the HTTP/1.1 protocol and may use gzip compression. The bot does not execute JavaScript or render web pages like a browser; it only parses static HTML content and follows links recursively. It also respects the X-Robots-Tag header and meta robots directives such as nofollow and noindex.

📋 robots.txt Compliance

Ask’s crawler fully respects the robots.txt exclusion standard. The official Ask.com tech policy page (archived at the URL above) explicitly states that site owners may use Disallow directives to block the bot from specific paths. The bot reads the /robots.txt file before each crawl session and adheres to the directives as long as the file is valid and accessible. There are no known reports of Ask’s bot ignoring robots.txt rules; it is considered a well-behaved crawler that follows standard webmaster controls.

🔍 Detection Indicators

The primary detection indicator is the User-Agent string: Mozilla/5.0 (compatible; Ask Jeeves/Teoma; +http://about.ask.com/docs/techpolicy.shtml). Variations have been observed, such as Ask Jeeves/Teoma (compatible; http://about.ask.com/docs/techpolicy.shtml) without the Mozilla prefix. The bot does not send a distinctive Accept-Language or Accept-Encoding header beyond typical browser defaults. It does not use a custom From header. The IP addresses belong to the IAC/Ask.com netblock, which can be verified through reverse DNS lookups (e.g., hostnames ending in .ask.com or .teoma.com). On the server side, the bot’s request signature shows no evidence of session cookies or referrer spoofing.

📊 Data Usage

Data collected by the Ask crawler is used exclusively for populating and updating the Ask.com web search index. The index supports the search engine’s ranking algorithms, which historically relied on Teoma’s authority-based ranking method. The company does not use the crawled content for training large language models or external AI systems. Ask.com has not publicly disclosed any data retention policies beyond standard search engine practices, and the data is not sold or shared with third parties for commercial analytics. The crawl data is periodically refreshed to maintain index freshness.

⚙️ Rate Limiting Policy

Ask’s crawler is rate-limited because its requests can accumulate quickly on high-traffic web servers, potentially degrading performance for human users. The policy rationale for threshold-based blocking is to ensure fair resource allocation: site owners are encouraged to set a Crawl-Delay directive in robots.txt (e.g., Crawl-Delay: 10) to control the bot’s pace. If no delay is set, server administrators may use rate-limiting rules at the application or reverse proxy layer (e.g., blocking IPs that exceed 20 requests per second) without blacklisting the bot entirely.

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