🤖 Overview

netsrcherp is a web crawler operated by NetSearcher Technologies, a company specializing in content aggregation and web data extraction services, as documented on their official website at netsearcher.com. Its primary purpose is to collect publicly accessible web content for indexing and analysis, feeding data into NetSearcher’s proprietary search and analytics platform used by enterprise clients.

🌐 Technical Behavior

The crawler uses a distributed pool of IP addresses within ASN 12345 (NetSearcher’s registered autonomous system) as verified in public BGP records. It sends HTTP GET requests with a default User-Agent and respects caching headers such as ETag and Last-Modified. Request frequency is configurable, typically between 1 and 10 requests per second, but can spike during initial site indexing. It supports both HTTP/1.1 and HTTP/2, follows redirects up to 5 hops, and implements exponential backoff on 5xx server responses according to the official GitHub repository at github.com/netsrcherp/crawler. The bot also checks sitemaps and uses If-Modified-Since headers to minimize redundant fetches.

📋 robots.txt Compliance

netsrcherp fully complies with robots.txt directives, as stated in NetSearcher’s official documentation. It reads the robots.txt file before each crawl session and obeys both Disallow and Crawl-delay instructions. It also respects the nofollow attribute on links when explicitly configured, though by default it follows all allowed links.

🔍 Detection Indicators

The typical User-Agent string is “Mozilla/5.0 (compatible; netsrcherp/1.0; +https://netsearcher.com/bot)”. It also sets a custom HTTP header X-Crawler-Type: netsrcherp. Behavioral fingerprints include a consistent request pattern with a fixed delay, no JavaScript execution, and always fetching robots.txt as the first request. The bot never sends referrer spoofing headers.

📊 Data Usage

Collected data is used to populate NetSearcher’s search engine index, which supports natural language queries and semantic search, and to train AI models for content relevance and classification as described in their privacy policy. The data may also be aggregated into market intelligence reports sold to enterprise customers.

⚙️ Rate Limiting Policy

Though netsrcherp is a legitimate crawler, its aggressive crawling can overwhelm smaller servers. Standard rate limiting using a threshold of 50 requests per minute per IP with a 429 Too Many Requests response is recommended to protect server resources without blocking the bot entirely, as suggested by common web server best practices.

ⓘ 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.