sudoku.friko.net No paid content found
Categories: Games
SUDOKU ONLINE SOLVER allows to generate random, to solve given or generated SUDOKU puzzles, as well as to support solution and print
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Updated: 2026-09-21 07:21
Language: English (default)
Access: Normal
Profile views 1
Outbound visits 0
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 2000, this domain has about 26 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 .net 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 Cloudflare, indicating managed DNS hosting. MX records point to the friko.net email service. No CNAME was found; the observed records resolve directly to addresses. 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 by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 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. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The cf-ray 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 identifies cloudflare without an exact version.
Technology Stack Analysis
The public page identifies Google Analytics, Cloudflare without precise versions, leaving fewer clues for version-specific scanning.
Search and Social Sharing
Open Graph is partially configured; og:title, og:description, og:type is missing. The title has 20 characters, within a common display range. A meta description is present, with 132 characters. The observed directives allow indexing and link following. No Generator meta tag is publicly exposed.
Hosting and Email
Cloudflare
Hosting
Location
Location unknown
104.21.91.229
Pages, Search and Sharing
| Meta description | SUDOKU ONLINE SOLVER allows to generate random, to solve given or generated SUDOKU puzzles, as well as to support solution and print |
|---|---|
| Canonical URL | https://sudoku.friko.net/en |
| Language | English (default) |
| Twitter Card | Not detected |
Social Sharing Preview
1 fields
Sharing metadata
| og:image | https://sudoku.friko.net/langs/en/og160426.jpg |
|---|
robots.txt (opens in a new tab)
15 rules
ahrefsbot 0 allowed · 1 disallowed
ahrefsbot
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mj12bot 0 allowed · 1 disallowed
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petalbot 0 allowed · 1 disallowed
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aspiegelbot 0 allowed · 1 disallowed
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semrushbot 0 allowed · 1 disallowed
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dotbot 0 allowed · 1 disallowed
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mauibot 0 allowed · 1 disallowed
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yandexbot 0 allowed · 1 disallowed
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blexbot 0 allowed · 1 disallowed
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dataforseobot 0 allowed · 1 disallowed
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grapeshotcrawler 0 allowed · 1 disallowed
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proximic 0 allowed · 1 disallowed
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barkrowler 0 allowed · 1 disallowed
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criteobot 0 allowed · 1 disallowed
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megaindex.ru 0 allowed · 1 disallowed
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No matching rules.
Sitemaps
0No sitemaps found
Registration details RDAP / WHOIS
| Registrar | eNom, LLC |
|---|---|
| Registered | 2000-07-23 |
| Expires | 2027-07-23 |
| Domain status | client transfer prohibited |
| Nameservers | boyd.ns.cloudflare.com、jean.ns.cloudflare.com |
| DNSSEC | unsigned |
DNS records
| Type | Name | Value | TTL | Priority |
|---|---|---|---|---|
| A | sudoku.friko.net | 104.21.91.229 | 300 | — |
| A | sudoku.friko.net | 172.67.181.66 | 300 | — |
| AAAA | sudoku.friko.net | 2606:4700:3035::6815:5be5 | 300 | — |
| AAAA | sudoku.friko.net | 2606:4700:3037::ac43:b542 | 300 | — |
| MX | friko.net | _dc-mx.406a2da10247.friko.net | 300 | 10 |
| NS | friko.net | boyd.ns.cloudflare.com | 86400 | — |
| NS | friko.net | jean.ns.cloudflare.com | 86400 | — |
| TXT | friko.net | v=spf1 ip4:79.96.50.103 a mx | 300 | — |
TLS and certificates
| Assessment | Normal configuration |
|---|---|
| Supported protocols | TLSv1.2、TLSv1.3 |
| Negotiated protocol | TLSv1.3 |
| Certificate subject | friko.net |
| Issuer | Let's Encrypt |
| Valid until | 2026-12-06T14:03 · Remaining when checked: 76 days |
| Verification details | Certificate trust: Passed · Hostname match: Passed |
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html; charset=UTF-8 |
| server | cloudflare |
Identified technologies
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