What powers 
sigs-datacom.de?
Last seen Mar 2026 · 7 technologies across 7 categories
CMS
TYPO3 CMS
since Feb 2019
Ecommerce
Cart Functionality
since Nov 2021
JavaScript libraries
Programming languages
PHP
since Feb 2019
UI frameworks
Web servers
Apache HTTP Server
since Feb 2019
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
Blocks 22 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- meta-externalagent Blocked
- PanguBot Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- Applebot Blocked
- DuckAssistBot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
- YouBot Blocked
User-request fetchers
- meta-externalfetcher Blocked
- MistralAI-User Blocked
The other 11 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
22 of 33 AI crawlers blocked
Open Page Rank
5.90 / 10 · ranked #116,952 of all domains
213 referring domains · OpenPageRank
Organisation
- JavaSpektrum
- Founded: 1996
From Wikidata (CC0).
Infrastructure
- Hosted on MITTWALD-AS Mittwald CM Service GmbH und Co. KG (178.16.59.233)
- DNS: plusserver.com
- Email: Hornetsecurity
- Email security: SPF (hard fail), DMARC monitor only, BIMI
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 449,054, 10 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted