Technical Information
| HTTP Status Code | 999 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 188.114.97.2 |
| Server Software | cloudflare |
| CDN | Cloudflare |
|
🔄 🔴 Redirect Loop Detected | The URL "https://www.linkedin.com/in/jacob-junqi-tian" redirects to itself, creating a loop. |
|
🕐 🟡 Slow Response (1096 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
HTTP Status Code 999
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 188.114.97.2
Server Software cloudflare
CDN Cloudflare
🔄 🔴 Redirect Loop Detected The URL "https://www.linkedin.com/in/jacob-junqi-tian" redirects to itself, creating a loop.
🕐 🟡 Slow Response (1096 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://tian.ac:443 | 302 | HTTP/2 302 |
| 2 | https://www.linkedin.com/in/jacob-junqi-tian/ | 301 | HTTP/2 301 |
| 3 | https://www.linkedin.com/in/jacob-junqi-tian | 999 | HTTP/2 999 |
#1 URL https://tian.ac:443
HTTP Status Code 302
Status HTTP/2 302
#2 URL https://www.linkedin.com/in/jacob-junqi-tian/
HTTP Status Code 301
Status HTTP/2 301
#3 URL https://www.linkedin.com/in/jacob-junqi-tian
HTTP Status Code 999
Status HTTP/2 999
Performance
| DNS Lookup | 4.1 ms |
| TCP Connect | 6 ms |
| TLS Handshake | 7.9 ms |
| Time To First Byte (TTFB) | 1095.7 ms |
| Content Download | 0 ms |
| Total Response Time | 1095.7 ms |
DNS Lookup 4.1 ms
TCP Connect 6 ms
TLS Handshake 7.9 ms
Time To First Byte (TTFB) 1095.7 ms
Content Download 0 ms
Total Response Time 1095.7 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ sameorigin |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ✔ Configured
X-Frame-Options ✔ sameorigin
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
Detected Technologies
| Technology | Google Analytics Cloudflare |
Technology Google Analytics Cloudflare
HTTP Headers
| Date | Thu, 20 Aug 2026 14:56:54 GMT |
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| Content-length | 1530 |
| Strict-transport-security | max-age=31536000 |
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| Expires | Thu, 01 Jan 1970 00:00:00 GMT |
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Date Thu, 20 Aug 2026 14:56:54 GMT
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