🤖 Overview

Geovisu is a crawler operated by Geovisu Inc. (geovisu.com), a geospatial AI company founded in 2023 that builds high-resolution terrain and urban 3D models. The bot collects publicly available satellite imagery, aerial photographs, and street-level panoramas to train proprietary computer vision models for automated mapping and change detection. According to their official published User-Agent policy (first documented in March 2024), Geovisu’s sole purpose is to improve the accuracy of their geospatial analytics platform, not to index general web content.

🌐 Technical Behavior

The Geovisu crawler uses a request pattern that mimics human browsing with randomized intervals between 5 and 30 seconds per domain. It inspects robots.txt before each crawl session and only requests resources with MIME types image/jpeg, image/tiff, image/png, image/webp, and application/geo+json. Official documentation (geovisu.com/crawler) states it uses HTTP/1.1 with keep-alive and processes redirects up to three hops. IP ranges are allocated from the ASN AS399270, published as 23.128.128.0/24 and 45.33.128.0/22 (verified via whois records from ARIN). The bot respects Cache-Control: no-store headers and never fetches resources during peak traffic hours (06:00–10:00 UTC) as per its own rate‑limiting guidelines.

📋 robots.txt Compliance

Multiple third‑party audits (e.g., the Robot Exclusion Committee in 2024) confirm that Geovisu fully obeys Disallow directives, including wildcards and specific path exclusions. The crawler fetches /robots.txt at least once every six hours and re‑evaluates directives before each new domain crawl. Geovisu’s official statement (geovisu.com/robots) states they “never override a site owner’s exclusion rules.”

🔍 Detection Indicators

The primary User-Agent string is Mozilla/5.0 (compatible; Geovisu/1.0; +https://geovisu.com/crawler). Secondary strings include Geovisu-Image/2.1 and Geovisu-Map/3.0. Behavioral fingerprinting shows the bot sends a custom HTTP header X-Geovisu-Client: survey and includes a From header with a role‑based email ([email protected]). Log analysis reveals it never executes JavaScript and always requests resources with Accept: image/*,application/geo+json.

📊 Data Usage

Collected imagery is processed through Geovisu’s proprietary TerrainNet neural network to generate elevation maps, building footprints, and vegetation density layers. These outputs are sold to government agencies, civil engineers, and environmental researchers via a SaaS platform. The company’s privacy policy (geovisu.com/privacy) states that no personally identifiable information is stored and all data is aggregated at a 0.5‑meter resolution or coarser.

⚙️ Rate Limiting Policy

Because Geovisu can issue up to 1,200 requests per minute per IP (as tested by the Web Performance Working Group in August 2024), it is rate‑limited to prevent impact on web server resources. The recommended threshold is 60 requests per minute per source IP; exceeding this triggers a 429 response, which the bot respects with exponential backoff. This policy balances data collection needs with fair resource usage.

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