What powers 
chemical-check.de?
Last seen Sep 2026 · 13 technologies across 11 categories
Advertising
Microsoft Advertising
since Dec 2024
Appointment scheduling
Calendly
since Feb 2023
CMS
TYPO3 CMS
since Jan 2024
Cookie compliance
Usercentrics
since Feb 2023
CRM
Bitrix24
since Feb 2023
JavaScript libraries
Miscellaneous
Open Graph
since Feb 2023
PWA
since Feb 2023
Programming languages
PHP
since Jan 2024
Security
HSTS
since Feb 2023
Video players
Twitch Player
since Feb 2023
Web servers
Apache HTTP Server
since Feb 2023
AI Crawlers
Blocks 4 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Bytespider Blocked
- Diffbot Blocked
- ImagesiftBot Blocked
- Webzio-Extended Blocked
- Applebot-Extended Allowed
- ClaudeBot Allowed
- cohere-training-data-crawler Allowed
- Google-Extended Allowed
- GPTBot Allowed
- meta-externalagent Allowed
Search and AI assistants
- Amazonbot Allowed
- Applebot Allowed
- Claude-SearchBot Allowed
- DuckAssistBot Allowed
- OAI-SearchBot Allowed
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
- Claude-User Allowed
- MistralAI-User Allowed
- Perplexity-User Allowed
The other 13 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
- Sep 2026 bytespider added to robots.txt
- Sep 2026 chatgpt-user added to robots.txt
- Sep 2026 claude-searchbot added to robots.txt
- Sep 2026 cohere-ai added to robots.txt
- Sep 2026 claudebot added to robots.txt
- Sep 2026 claude-user added to robots.txt
AI Crawlers
4 of 33 AI crawlers blocked
Standards: llms.txt
Open Page Rank
4.56 / 10 · ranked #392,236 of all domains
61 referring domains · OpenPageRank
Infrastructure
- Hosted on MITTWALD-AS Mittwald CM Service GmbH und Co. KG (185.237.65.209)
- DNS: abacom.net
- Email: owis365.de
- Email security: SPF (hard fail), no DMARC record
- SSL: DigiCert, RSA 3072, expires Mar 2027
- Common Crawl link graph: rank 11,905,870, 3 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted