🤖 Overview

infousabot is a legitimate web crawler operated by InfoUSA (now part of Infogroup), a leading provider of business and consumer data for marketing and sales intelligence. Its primary purpose is to collect publicly available business information from websites, including company names, addresses, phone numbers, and industry classifications, to maintain and update the InfoUSA database used by clients for lead generation and market analysis. Official documentation from Infogroup confirms this bot is used exclusively for data enrichment, not for AI training or indexing.

🌐 Technical Behavior

The crawler systematically traverses web pages using HTTP requests with a default crawl rate that can be aggressive, often accessing multiple pages per second from a single IP address. According to published server logs and webmaster reports, infousabot typically uses IP addresses from ranges owned by InfoUSA or its hosting providers, though no fixed public list is officially documented. It follows standard web crawling protocols, including support for HTTP/1.1 and gzip compression, and it rarely sends a Referer header. The bot does not execute JavaScript or render dynamic content, focusing instead on static HTML pages containing structured business data. It also respects Last-Modified headers to avoid re-crawling unchanged pages.

📋 robots.txt Compliance

InfoUSA officially states that infousabot respects the robots.txt disallow directives and can be blocked by adding a relevant rule. However, numerous webmaster forum discussions indicate that the bot may sometimes ignore Crawl-Delay directives or continue crawling after being disallowed, though these reports are anecdotal and not confirmed by InfoUSA. Official documentation from Infogroup recommends using the User-Agent string InfoUsaBot in robots.txt to control access, and testing shows it typically obeys Disallow rules within minutes.

🔍 Detection Indicators

The primary User-Agent string is Mozilla/5.0 (compatible; infousabot +http://www.infousa.com/bot), though variations exist. The bot often identifies itself with a custom User-Agent header containing "infousabot" or "InfoUsaBot". Additional behavioral fingerprints include a high request rate from a single IP without a typical browser profile, no Accept-Language header, and a reverse DNS hostname that resolves to an Infogroup domain. Some versions also include a From header with an email address for feedback.

📊 Data Usage

The crawled data feeds directly into the InfoUSA business database, which is sold to customers for sales prospecting, marketing campaigns, and business verification. The information is aggregated, deduplicated, and updated regularly to provide accurate contact lists. It is not used for AI training or search indexing but rather for commercial lead generation services that rely on verified public records.

⚙️ Rate Limiting Policy

Because infousabot can consume significant bandwidth when crawling large sites, many webmasters impose rate limits or temporary blocks after detecting an aggressive crawl pattern. The policy for rate limiting is justified by the need to protect server resources and ensure fair access for human visitors, while still allowing legitimate data collection at a reasonable pace. Infogroup recommends contacting them to adjust crawl behavior if rate limits are encountered.

ⓘ 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.