简体中文
Englishtool.gcc.ac.cn
An online toolbox powered by Yumi. Including base64 encode/decode, number base conversion, etc.
At a glance
- Category
- Development
- Language
- English
- Paid-content signal
- No paid content foundObserved
- Registered
- 2016
- Hosting
- FastlyInferred
- HTTPS certificate trusted
- PassedObserved
- Last updated
Related questions
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Website Overview
An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. An active inbound-mail setup with incomplete authentication may leave the domain more open to impersonation. Provider hosting alone does not close that gap.
Domain and Registration
Registered in 2016, this domain has about 10 years of history. That suggests continuity, although ownership and purpose may have changed. The domain uses the common .cn extension, which is not an independent safety signal.
DNS and Email
The observed email authentication setup is incomplete: DMARC is missing. Nameservers are provided by DNSPod, indicating managed DNS hosting. MX records point to the Tencent Enterprise Mail email service. TXT records include verification markers for Google. Such markers may also remain after a service stops being used. DNSSEC signatures were not detected, so this additional DNS authenticity protection is not confirmed.
TLS and Certificates
The public key uses EC with 256 bits. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued within the Google Trust Services cloud or CDN ecosystem. The certificate's total validity is about 90 days, consistent with a short renewal cycle.
HTTP and Browser Security
The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The cf-ray, x-cache, x-served-by, via response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers.
Technology Stack Analysis
The public page identifies Google Analytics, Cloudflare, Fastly without precise versions, leaving fewer clues for version-specific scanning.
Search and Social Sharing
No Open Graph metadata was detected, so social previews may depend on platform inference. The title has 26 characters, within a common display range. A meta description is present, with 95 characters. The observed directives allow indexing and link following. No Generator meta tag is publicly exposed.
Hosting and Email
DNSPod
Fastly
Tencent Enterprise MailRegistration details
| Registrar | 腾讯云计算（北京）有限责任公司 |
|---|---|
| Registered | 2016-02-14 |
| Expires | 2027-02-14 |
| Domain status | ok |
| Nameservers | f1g1ns1.dnspod.net、f1g1ns2.dnspod.net |
| DNSSEC | unsigned |
DNS records
| Type | Name | Value | TTL | Priority |
|---|---|---|---|---|
| A | github.yumi-cloud.eu.org | 104.21.61.53 | 300 | — |
| A | github.yumi-cloud.eu.org | 172.67.206.126 | 300 | — |
| AAAA | github.yumi-cloud.eu.org | 2606:4700:3034::6815:3d35 | 300 | — |
| AAAA | github.yumi-cloud.eu.org | 2606:4700:3037::ac43:ce7e | 300 | — |
| MX | gcc.ac.cn | mxbiz1.qq.com | 600 | 5 |
| MX | gcc.ac.cn | mxbiz2.qq.com | 600 | 10 |
| NS | gcc.ac.cn | f1g1ns1.dnspod.net | 86400 | — |
| NS | gcc.ac.cn | f1g1ns2.dnspod.net | 86400 | — |
| TXT | gcc.ac.cn | google-site-verification=eEfBpdRzqVu9OII9utWhB8FJ5n-nLzClwOB2XVJVcjE | 600 | — |
| TXT | gcc.ac.cn | v=spf1 include:spf.mail.qq.com ~all | 600 | — |
| CNAME | tool.gcc.ac.cn | github.yumi-cloud.eu.org | 600 | — |
TLS and certificates
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html; charset=utf-8 |
| cache-control | max-age=600 |
| server | cloudflare |
| access-control-allow-origin | * |
Identified technologies
Pages, Search and Sharing
| Meta description | An online toolbox powered by Yumi. Including base64 encode/decode, number base conversion, etc. |
|---|---|
| Canonical URL | https://tool.gcc.ac.cn/ |
| Language | English (default) |
| Twitter Card | Not detected |
Unknown
robots.txt (opens in a new tab)
1 rulesAll bots 1 allowed · 0 disallowed
- Allow
/
No matching rules.
Sitemaps
1Recent Updates
- Website images
- Screenshots
- Network details
- Website Technologies
- Pages and Search Information
- HTTP Response Information
- TLS and certificates
- DNS Information
- Domain Registration
- Website profile
- Website Description
- Website Name
- Website profile
- Website Description
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