🤖 Overview

dblbot is a web crawler operated by the dblp computer science bibliography, a project hosted at University of Trier in Germany. Its primary purpose is to harvest bibliographic metadata—such as author names, titles, publication venues, and DOIs—from academic publishers, preprint servers, and institutional repositories to feed into the dblp database (dblp.org). The database is freely accessible and serves as a comprehensive index for computer science publications, used by researchers, libraries, and citation analysis tools.

🌐 Technical Behavior

dblbot performs HTTP GET requests targeting URLs that typically contain publication lists, HTML pages with structured bibliographic data, or XML feeds (e.g., OAI-PMH endpoints). It adheres to a polite crawl pace: the official documentation at dblp.org/crawlers recommends a delay of at least one second between requests, and the bot respects robots.txt crawl-delay directives. Its IP ranges are predominantly from German academic networks (e.g., 141.89.x.x and 134.96.x.x, belonging to Universität Trier), though the exact list is not published. The crawler uses HTTP/1.1 with standard headers and does not support JavaScript or cookies, relying solely on static content. It operates 24/7 but is rate-limited to avoid overwhelming servers.

📋 robots.txt Compliance

According to the dblp crawler FAQ (dblp.org/faq), dblbot fully honors the Robots Exclusion Protocol, including Disallow, Allow, and Crawl-Delay directives. Site administrators can block dblbot by adding User-agent: dblbot followed by Disallow: / in their robots.txt. The bot checks robots.txt at the beginning of each crawl session and re-evaluates it periodically (typically every 24 hours). Non-compliance would contradict dblp’s stated policy as a non‑profit academic service.

🔍 Detection Indicators

The sole known User-Agent string is dblbot (exact spelling, all lowercase). No other tokens or versions are appended. Behavioral fingerprints include: consecutive requests from the same IP within a minute, a high ratio of text/html responses, and no referrer headers. The bot’s HTTP requests lack the Accept-Language header and use a fixed User-Agent value. Server logs showing repeated GET requests originating from German academic IP blocks and zero JavaScript execution are strong indicators of dblbot activity.

📊 Data Usage

Collected bibliographic records are added to the dblp database, which is used for academic indexing, author disambiguation, and providing citation graphs. The data is not sold or used for AI training; it remains a public-facing bibliography service. dblp does not store full-text content—only metadata and links to the original publisher’s site.

⚙️ Rate Limiting Policy

dblbot is rate‑limited because its polite but persistent crawl schedule may still generate noticeable traffic on small‑scale servers, potentially degrading performance for other users. Threshold‑based blocking (e.g., > 5 requests per second) is recommended to prevent accidental overload while still allowing legitimate academic indexing.

ⓘ 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.