Checking results for: sylc.co.kr
Additional info for https://sylc.co.kr
Technical Information
| HTTP Status Code | 406 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 203.245.24.30 |
| Server Software | nginx |
|
🚫 🟡 HTTP 406 Error | The server returned a 406 error. Check the access configuration. |
|
🕐 🟡 Slow Response (1394 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 406
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 203.245.24.30
Server Software nginx
🚫 🟡 HTTP 406 Error The server returned a 406 error. Check the access configuration.
🕐 🟡 Slow Response (1394 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 257.7 ms |
| TCP Connect | 541.1 ms |
| TLS Handshake | 569.3 ms |
| Time To First Byte (TTFB) | 1393.9 ms |
| Content Download | 0 ms |
| Total Response Time | 1393.9 ms |
DNS Lookup 257.7 ms
TCP Connect 541.1 ms
TLS Handshake 569.3 ms
Time To First Byte (TTFB) 1393.9 ms
Content Download 0 ms
Total Response Time 1393.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
Title 406 Not Acceptable
Detected Technologies
Technology Nginx
HTTP Headers
| Server | nginx |
| Date | Wed, 22 Jul 2026 02:43:43 GMT |
| Content-Type | text/html |
| Content-Length | 558 |
| Connection | keep-alive |
Server nginx
Date Wed, 22 Jul 2026 02:43:43 GMT
Content-Type text/html
Content-Length 558
Connection keep-alive
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