What powers certum.co.uk?
Last seen Sep 2026 · 29 technologies across 16 categories
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AI Crawlers
Blocks 11 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- ImagesiftBot Blocked
- Webzio-Extended Blocked
- ClaudeBot Allowed
- GPTBot Allowed
Search and AI assistants
- Amazonbot Blocked
- PetalBot Blocked
- PerplexityBot Allowed
- YouBot Allowed
The other 18 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
- llms-full.txt found
- ai.txt not found
AI Crawlers
11 of 33 AI crawlers blocked
Standards: llms.txt, llms-full.txt
Open Page Rank
2.58 / 10 · ranked #2,362,394 of all domains
42 referring domains · OpenPageRank
Page
- Language: English (United States)
- Weight: 3.2 MB · 108 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Certum
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on IONOS (213.171.208.37)
- DNS: Azure DNS
- Email: emailsecurity.app
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 2,996,414, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- dropped Microsoft 365 Feb 2026