Technical Information
| HTTP Status Code | 999 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 188.114.96.2 |
| Server Software | cloudflare |
| CDN | Cloudflare |
|
🔄 🔴 Redirect Loop Detected | The URL "https://www.linkedin.com/in/jacob-junqi-tian" redirects to itself, creating a loop. |
HTTP Status Code 999
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 188.114.96.2
Server Software cloudflare
CDN Cloudflare
🔄 🔴 Redirect Loop Detected The URL "https://www.linkedin.com/in/jacob-junqi-tian" redirects to itself, creating a loop.
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 | 5.2 ms |
| TCP Connect | 7.1 ms |
| TLS Handshake | 8.7 ms |
| Time To First Byte (TTFB) | 777.7 ms |
| Content Download | 0.1 ms |
| Total Response Time | 777.7 ms |
DNS Lookup 5.2 ms
TCP Connect 7.1 ms
TLS Handshake 8.7 ms
Time To First Byte (TTFB) 777.7 ms
Content Download 0.1 ms
Total Response Time 777.7 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 | Tue, 28 Jul 2026 18:45:30 GMT |
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| Content-length | 1530 |
| Strict-transport-security | max-age=31536000 |
| X-content-type-options | nosniff |
| X-frame-options | sameorigin |
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| Expires | Thu, 01 Jan 1970 00:00:00 GMT |
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| Cf-cache-status | DYNAMIC |
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| Cf-ray | a2260a8abd44c46a-CDG |
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Date Tue, 28 Jul 2026 18:45:30 GMT
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