🤖 Overview

Personal Ultimate Crawler is a web crawling agent operated by Personal Ultimate Corp., a data enrichment and lead generation company headquartered in the United States. Its primary purpose is to collect publicly available contact information, business details, and professional profiles from websites to feed into the company’s B2B database and sales intelligence platform. The crawler was first documented in public User-Agent lists around 2019 and is considered a legitimate, non-malicious agent used for commercial data aggregation.

🌐 Technical Behavior

The crawler employs a headless Chromium-based engine operating over HTTPS/1.1 and HTTP/2 protocols, sending requests at a variable rate averaging 2–5 requests per second per IP. It scans pages sequentially, following internal links but not JavaScript-heavy content beyond first-level dynamic loads. Official documentation from Personal Ultimate indicates it uses IP ranges allocated to Amazon Web Services (us-east-1 and us-west-2) as well as a small block from DigitalOcean (AS14061). The crawler respects Cache-Control and ETag headers to avoid redundant downloads. It does not support session-based crawling or form submission; it only extracts static HTML content.

📋 robots.txt Compliance

Personal Ultimate Crawler fully honors Disallow, Allow, and Crawl-Delay directives as verified by multiple third-party audits (e.g., BotFilter.io report 2023). The company publishes a public compliance statement at https://personalultimate.com/robots-policy confirming they respect robots.txt and will cease crawling upon a 410 Gone status.

🔍 Detection Indicators

The primary User-Agent string is Personal Ultimate Crawler/2.0 (+https://personalultimate.com/crawler). Additional identifying headers include From: [email protected] and a custom X-Crawler-Identity: PersonalUltimate header. The bot also includes its purpose in the User-Agent comment: (contact crawler for B2B database). Requests originate from IP addresses in the 52.0.0.0/8 and 138.68.0.0/16 blocks and always present a valid Accept: text/html,application/xhtml+xml header.

📊 Data Usage

Collected data—primarily business names, email addresses, phone numbers, job titles, and company descriptions—is processed and sold to clients as part of Personal Ultimate’s subscription-based lead generation service. The company explicitly states in its privacy policy that they do not collect personal identifiable information (PII) from private profiles or password-protected areas. The data is also used to train internal AI models for entity extraction and contact deduplication.

⚙️ Rate Limiting Policy

While the crawler is not malicious, its aggressive request rate and broad crawl scope can overwhelm smaller servers. Rate limiting is recommended at 10 requests per second per IP with a 3-second Crawl-Delay in robots.txt. Threshold-based blocking (e.g., 503 after 50 requests/minute) is a standard defensive measure to protect server resources without permanently blacklisting the agent.

ⓘ 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.