# Does zimbra.com allow GPTBot? robots.txt as of 2026-09-14

## In short

On 2026-09-14 the robots.txt of zimbra.com resolved 19 AI crawler tokens: 2 allowed for / and 17 disallowed for /.

| Fact | Value |
| --- | --- |
| Domain | zimbra.com |
| AI crawler tokens resolved | 19 |
| Allowed for / | 2 |
| Disallowed for / | 17 |
| robots.txt | robots.txt present, 860 bytes |
| Checks that ran | robots |
| robots.txt read (tier A) | 2026-09-14 |
| Last verified | 2026-09-14 |

## Every AI crawler token in the registry

| Crawler | Vendor | Observation | Evidence | Observed |
|---|---|---|---|---|
| GPTBot | OpenAI | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| ClaudeBot | Anthropic | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| PerplexityBot | Perplexity | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| OAI-SearchBot | OpenAI | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| CCBot | Common Crawl Foundation | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Bytespider | ByteDance | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Googlebot | Google | allowed for / | robots.txt line 13 in the User-agent: Googlebot group: "Allow: /" (longest match wins) | 2026-09-14 |
| ChatGPT-User | OpenAI | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Claude-User | Anthropic | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Claude-SearchBot | Anthropic | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Perplexity-User | Perplexity | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| anthropic-ai | Anthropic | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Bingbot | Microsoft | allowed for / | robots.txt line 10 in the User-agent: Bingbot group: "Allow: /" (longest match wins) | 2026-09-14 |
| Applebot | Apple | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Amazonbot | Amazon | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| meta-externalagent | Meta | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| DuckAssistBot | DuckDuckGo | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Applebot-Extended | Apple | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |
| Google-Extended | Google | disallowed for / | robots.txt line 3 in the User-agent: * group: "Disallow: /" (longest match wins) | 2026-09-14 |

## The robots.txt reading itself

| Observation | Value | Evidence | Observed |
|---|---|---|---|
| agents-summary | AI crawler rules: 2 allowed, 17 disallowed | 19 crawler tokens resolved against https://zimbra.com/robots.txt (HTTP 200, 860 bytes) at 2026-09-14T17:14:00Z | 2026-09-14 |
| file | robots.txt present, 860 bytes | GET https://zimbra.com/robots.txt at 2026-09-14T17:14:00Z returned HTTP 200, 860 bytes, content type text/plain, 16 user agent group(s) | 2026-09-14 |
| our-checker | robots.txt disallows our checker | robots.txt line 3: "Disallow: /" applies to BikooshBot/1.0 (+https://bikoosh.com/bot); nothing further was fetched | 2026-09-14 |
| sitemap-declared | 1 sitemap(s) declared in robots.txt | line 59: "Sitemap: https://www.zimbra.com/sitemap_index.xml" | 2026-09-14 |

Robots.txt history: https://bikoosh.com/aeo/site/zimbra.com/history

Limitation: this test appends a labelled marker to our own honest User Agent, it never impersonates another agent. Rules keyed to an exact User Agent string, or to a vendor's IP ranges, are invisible to this method and are neither confirmed nor ruled out.

AEO Watch is an independent, factual monitor. It is not affiliated with, endorsed by or speaking for any crawler vendor. Every statement is an observation with the date it was made and the raw evidence behind it: a robots.txt line, an HTTP status code, a header. There are no scores, no grades and no verdicts here, and nothing on this page is advice. A site opts out at any time and the opt out is honoured automatically and permanently.