What powers sosym.org?
Last seen Aug 2026 · 4 technologies across 4 categories
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
4.01 / 10 · ranked #560,646 of all domains
81 referring domains · OpenPageRank
Page
- Weight: 0.1 MB · 10 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Software and Systems Modeling
- Founded: 2002
From Wikidata (CC0).
Infrastructure
- Hosted on RWTH-AS (149.201.122.164)
- DNS: dfn.de
- Email: rwth-aachen.de
- Email security: no SPF record, no DMARC record, CAA
- SSL: HARICA, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 2,023,783, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped HSTS Aug 2026
- detected Apache HTTP Server Jul 2026
- detected OpenSSL Jul 2026
- detected UNIX Jul 2026