简体中文corca.app
Corca is an intuitive and flexible tool for working with math
At a glance
- Category
- Other
- Language
- English
- Paid-content signal
- No paid content foundObserved
- Registered
- 2018
- Hosting
- Google LLCInferred
- HTTPS certificate trusted
- PassedObserved
- Last updated
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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. Page metadata, canonical configuration and social previews work together to provide more consistent search and sharing presentation.
Domain and Registration
Registered in 2018, this domain has about 8 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .app extension, which is not an independent safety signal.
DNS and Email
Nameservers are provided by Google Cloud DNS, indicating managed DNS hosting. DNSSEC is enabled, allowing validating resolvers to authenticate signed DNS data. No CNAME was found; the observed records resolve directly to addresses. No MX record was found. A conventional explicit inbound-mail route is not configured. TXT records include verification markers for Google. Such markers may also remain after a service stops being used.
TLS and Certificates
The certificate uses an RSA 2048-bit public key, offering broad client compatibility. 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
X-Powered-By exposes backend information: Next.js. The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. The 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. The Server header contains the custom value Google Frontend.
Technology Stack Analysis
The public page identifies Next.js, Google Analytics without precise versions, leaving fewer clues for version-specific scanning.
Search and Social Sharing
Open Graph is partially configured; og:type is missing. Twitter Card metadata is configured. The title has 32 characters, within a common display range. A meta description is present, with 61 characters. The observed directives allow indexing and link following.
Hosting and Email
Google Cloud DNS
Google LLC
Kansas City, Missouri, United States
Inferred
34.144.196.168
Registration details
| Registrar | Name.com, Inc. |
|---|---|
| Registered | 2018-05-28 |
| Expires | 2027-05-28 |
| Domain status | client transfer prohibited |
| Nameservers | ns-cloud-b1.googledomains.com、ns-cloud-b2.googledomains.com、ns-cloud-b3.googledomains.com、ns-cloud-b4.googledomains.com |
| DNSSEC | signed |
DNS records
| Type | Name | Value | TTL | Priority |
|---|---|---|---|---|
| A | corca.app | 34.144.196.168 | 300 | — |
| NS | corca.app | ns-cloud-b1.googledomains.com | 21600 | — |
| NS | corca.app | ns-cloud-b2.googledomains.com | 21600 | — |
| NS | corca.app | ns-cloud-b3.googledomains.com | 21600 | — |
| NS | corca.app | ns-cloud-b4.googledomains.com | 21600 | — |
| TXT | corca.app | google-site-verification=SzD5n_oPjovnfX26mxOIFwTbYILWHAJ7Sl9HQ3lw2Gc | 300 | — |
| TXT | corca.app | google-site-verification=wnesAvvJabmLjEJ0Dj_OtPjonYUsnhNa1vA_whex-uU | 300 | — |
| DS | corca.app | 8915 8 2 99a332dc1ce6b832485a61ddb6c18430d913f3e15981b7b9ff3bbd7e131d62f0 | 1800 | — |
TLS and certificates
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html; charset=utf-8 |
| cache-control | private, no-cache, no-store, max-age=0, must-revalidate |
| server | Google Frontend |
Identified technologies
Pages, Search and Sharing
| Meta description | Corca is an intuitive and flexible tool for working with math |
|---|---|
| Canonical URL | https://corca.app |
| Language | English (default) |
| Twitter Card | summary_large_image |
Social Sharing Preview
11 fields
robots.txt (opens in a new tab)
1 rulesAll bots 1 allowed · 0 disallowed
- Allow
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No matching rules.
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