Does globalsign.com block AI crawlers?
globalsign.com blocks 7 of 17 AI crawlers (GPTBot, ClaudeBot, Google-Extended, CCBot, Bytespider, Applebot-Extended and Meta-ExternalAgent), and allows 10 (checked 2026-10-01).
This is the deliberate split: training crawlers are opted out, while the retrieval crawlers that fetch pages to cite them in ChatGPT search, Claude and Perplexity answers can still reach it.
Every crawler we tested
| Crawler | Used for | Verdict | What we saw |
|---|---|---|---|
| GPTBot OpenAI | ChatGPT (training) | Blocked | Blocked: robots.txt disallows it. |
| OAI-SearchBot OpenAI | ChatGPT search (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| ChatGPT-User OpenAI | ChatGPT (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| ClaudeBot Anthropic | Claude (training) | Blocked | Blocked: robots.txt disallows it. |
| Claude-SearchBot Anthropic | Claude search (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| Claude-User Anthropic | Claude (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| Google-Extended Google | Gemini (training) | Blocked | Blocked: robots.txt disallows it. |
| PerplexityBot Perplexity | Perplexity (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| Perplexity-User Perplexity | Perplexity (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| CCBot Common Crawl | Common Crawl (research) | Blocked | Blocked: robots.txt disallows it. |
| Bytespider ByteDance | ByteDance (training) | Blocked | Blocked: robots.txt disallows it. |
| Applebot-Extended Apple | Apple Intelligence (training) | Blocked | Blocked: robots.txt disallows it. |
| Meta-ExternalAgent Meta | Meta AI (training) | Blocked | Blocked: robots.txt disallows it. |
| Amazonbot Amazon | Alexa (training) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| cohere-ai Cohere | Cohere (retrieval) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| Diffbot Diffbot | Diffbot (research) | Allowed | Allowed: robots.txt permits it and the page loaded. |
| Timpibot Timpi | Timpi (research) | Allowed | Allowed: robots.txt permits it and the page loaded. |
How that compares
- GPTBot is blocked by 38 of the 239 sites on these pages (15.9%).
- ClaudeBot is blocked by 36 of the 240 sites on these pages (15%).
- Google-Extended is blocked by 38 of the 244 sites on these pages (15.6%).
- CCBot is blocked by 37 of the 240 sites on these pages (15.4%).
Homepage SEO snapshot
From the Crawlwise SEO Index run, checked 2026-10-05. One fetch of the homepage, so it describes that page and not the whole site.
| Homepage | https://www.globalsign.com/en |
|---|---|
| HTTPS | yes |
| Title | 54 characters |
| Meta description | 193 characters |
| Canonical | points to itself |
| Noindex | no |
| H1 elements | 3 |
| Language | en |
| JSON-LD types | Organization, ContactPoint, WebSite |
| hreflang alternates | 16 |
| /sitemap.xml | valid XML sitemap |
| Response time | 60 ms |
How this was measured
We read globalsign.com’s robots.txt, resolved it with an RFC 9309 matcher for each crawler’s product token, then fetched the homepage once as each crawler. A 403 or a challenge page is a block even when robots.txt allows the crawler; a timeout or rate limit is “not established”, never a block. One probe, from one location, on 2026-10-01, so a rule changed since then is not reflected here. Full methodology.
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Other sites
- flurry.com — blocks none of 17
- fontawesome.com — blocks none of 17
- yieldmo.com — blocks 2 of 17
- classlink.com — blocks none of 17
- branch.io — blocks none of 17
- applovin.com — blocks none of 17