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 | 6.2 ms |
| TCP Connect | 8.2 ms |
| TLS Handshake | 8 ms |
| Time To First Byte (TTFB) | 755.3 ms |
| Content Download | 0 ms |
| Total Response Time | 755.3 ms |
DNS Lookup 6.2 ms
TCP Connect 8.2 ms
TLS Handshake 8 ms
Time To First Byte (TTFB) 755.3 ms
Content Download 0 ms
Total Response Time 755.3 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 14:31:40 GMT |
| Content-type | text/html |
| Content-length | 1530 |
| Strict-transport-security | max-age=31536000 |
| X-content-type-options | nosniff |
| X-frame-options | sameorigin |
| Content-security-policy | default-src 'none'; connect-src 'self' *.licdn.com *.linkedin.com cdn.linkedin.oribi.io dpm.demdex.net/id lnkd.demdex.net blob: accounts.google.com/gsi/ linkedin.sc.omtrdc.net/b/ss/ *.microsoft.com *.adnxs.com login.microsoftonline.com; script-src 'report-sample' 'sha256-SSoodjUD3LGm2FfFCVHGqEb8D4UM3OOigidT2UKDcYg=' 'sha256-cKTgdnmO6+hXd85a9wKg1effVfVzenUAtUCyOKY9bQE=' 'sha256-DwtT8+ZZKpxH9pqZNAmJ3GdbLAh5SsYaXR3omTXPCns=' 'sha256-sV9jZa797T0QWBzcU/CNd4tpBhTnh+TFdLnfjlitl28=' 'sha256-aa/Q8CRBDSqTQbCIyioPhZaz+G+dbPyu7BzsjInEmiU=' 'sha256-THuVhwbXPeTR0HszASqMOnIyxqEgvGyBwSPBKBF/iMc=' 'sha256-zTIusdVJJeXz9+iox2a+pdDglzbpRpFVRzEwvW4AONk=' 'sha256-iC8MPqNLw0FDnsBf4DlSkFLNTwhkI85aouiAEB819ic=' 'sha256-2EqrEvcPzl8c6/TSGVvaVMEe7lg700MAz/te4/3kTYY=' 'sha256-y5uW69VItKj51mcc7UD9qfptDVUqicZL+bItEpvVNDw=' 'sha256-DatsFGoJ8gFkzzxo47Ou76WZ+3QBPOQHtBu9p9b3DhA=' 'sha256-k95cyM8gFgPziZe5VQ2IvJvBUVyd5zFt2CokIUwqdHE=' 'sha256-PyCXNcEkzRWqbiNr087fizmiBBrq9O6GGD8eV3P09Ik=' 'sha256-RFqsjmAF1N5LnfpaHFvPqFlVkeIS/DtTAFor+JjJJVc=' 'sha256-2SQ55Erm3CPCb+k03EpNxU9bdV3XL9TnVTriDs7INZ4=' 'sha256-S/KSPe186K/1B0JEjbIXcCdpB97krdzX05S+dHnQjUs=' 'sha256-FlukkU82ZNE00G2TrHsH/yPyxOM3w+ZxvfuhvuFPnUw=' 'sha256-2zZW4Jcwd05ccL428yqAJrFBz0W+zZ84jSu9AoKa75Q=' 'sha256-3RIGhhApBii1KY+aW1xk7kFyoQY8vSVE5DfT7E9SJUc=' 'sha256-9pXOIwF4N0gPltLd3AI69lkCjSC2H/Eb3sc5zdmUyYU=' 'sha256-jou6v/Nleyzoc+LXktAv1Fp8M807dVVxy7E/yzVljHc=' 'sha256-6E4e/3dSvj/8JZT2S2yR91mspqM6MyOpKl5lrhHsZa8=' 'sha256-JfJ82reKxtqugVbfRGw/O/1x1Lm1I09rHueXSwvbRws=' 'sha256-BbV1i75oYRtLtfDWs7tnA8QLF5EOO1dVHKL0prVd/fQ=' 'sha256-3woF8BZ54TeXM+czaH3aXoaJsVpiamuAKFsXDykAR/Q=' 'sha256-vIfNcKb8ixJg1cfJIoNNYjWcm0lezj1/XpUNFiZyVsU=' 'sha256-cLsHUHFgT/VGX04cZrJ9xgm4HbzTR7ptutkxK+7BlMk=' 'sha256-BwU8jMnQYUhjOpsDVABpfddV/DlP1ZYrFcTumYw7x54=' 'sha256-wz6ika9i3WU3bpUPdhYDZeO/NrDQniDyiscN0LWnyaY=' 'sha256-wy4DvlEW9PHPIGvQJW6Wv4woBSa/0LJHs8LHsBVVXCs=' 'sha256-065A0cJTDQ+hyKvufSL/flW02hIbgLndOINLRWux6To=' 'sha256-Ga5SLB8hPdWUE8Wb6LgZ05D9Z5vrdLAaPbDBW2m3BI8=' static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com platform.linkedin.com platform-akam.linkedin.com platform-ecst.linkedin.com platform-azur.linkedin.com snap.licdn.com merchantpool1.linkedin.com/mdt.js; img-src data: blob: * 'self' *.licdn.com android-webview-video-poster:; font-src data: * 'self' *.licdn.com; style-src 'self' 'unsafe-inline' static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com; media-src 'self' *.licdn.com *.lynda.com; worker-src 'self' blob: static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com; frame-src 'self' www.youtube.com/embed/ www.youtube-nocookie.com/embed/ lnkd.demdex.net smartlock.google.com accounts.google.com player.vimeo.com *.linkedin.com www.slideshare.net *.megaphone.fm *.omny.fm *.sounder.fm msit.powerbi.com app.powerbi.com linkedin.github.io *.licdn.com *.adnxs.com acdn.adnxs-simple.com radar.cedexis.com edge-auth.microsoft.com flo.uri.sh li.protechts.net *.xlgmedia.com *.px-cloud.net merchantpool1.linkedin.com; frame-ancestors 'self' *.www.linkedin.com:*; manifest-src 'self'; report-uri https://www.linkedin.com/security/csp?f=d |
| X-li-fabric | prod-ltx1 |
| Pragma | no-cache |
| Expires | Thu, 01 Jan 1970 00:00:00 GMT |
| Cache-control | no-cache, no-store, no-transform |
| X-li-pop | cf-prod-ltx1-x |
| X-li-proto | http/2 |
| X-li-uuid | AAZZe2DIeYdRMJU6qI5cpg== |
| Set-cookie | __cf_bm=edNJ_fETRtQu6lE2nUGie_wvOmTTOy6jak_Yov8DJ_o-1787236299.8034558-1.0.1.1-Fsvs_lK2Ysvb0C.zWQLBP2N0lxbEsKtAOqWc8sK0yW97Wxi_Wmghjc6QcexJn4tkgKmJKciIpXFn7np6KOsFtscKmSjUcLIKmpSkI5S2djXozHw9A1Ndw5oLE7zSacco; HttpOnly; SameSite=None; Secure; Path=/; Domain=linkedin.com; Expires=Thu, 20 Aug 2026 15:01:40 GMT |
| Cf-cache-status | DYNAMIC |
| Server | cloudflare |
| Cf-ray | a2e21a59ce858504-CDG |
| Alt-svc | h3=":443"; ma=86400 |
Date Thu, 20 Aug 2026 14:31:40 GMT
Content-type text/html
Content-length 1530
Strict-transport-security max-age=31536000
X-content-type-options nosniff
X-frame-options sameorigin
Content-security-policy default-src 'none'; connect-src 'self' *.licdn.com *.linkedin.com cdn.linkedin.oribi.io dpm.demdex.net/id lnkd.demdex.net blob: accounts.google.com/gsi/ linkedin.sc.omtrdc.net/b/ss/ *.microsoft.com *.adnxs.com login.microsoftonline.com; script-src 'report-sample' 'sha256-SSoodjUD3LGm2FfFCVHGqEb8D4UM3OOigidT2UKDcYg=' 'sha256-cKTgdnmO6+hXd85a9wKg1effVfVzenUAtUCyOKY9bQE=' 'sha256-DwtT8+ZZKpxH9pqZNAmJ3GdbLAh5SsYaXR3omTXPCns=' 'sha256-sV9jZa797T0QWBzcU/CNd4tpBhTnh+TFdLnfjlitl28=' 'sha256-aa/Q8CRBDSqTQbCIyioPhZaz+G+dbPyu7BzsjInEmiU=' 'sha256-THuVhwbXPeTR0HszASqMOnIyxqEgvGyBwSPBKBF/iMc=' 'sha256-zTIusdVJJeXz9+iox2a+pdDglzbpRpFVRzEwvW4AONk=' 'sha256-iC8MPqNLw0FDnsBf4DlSkFLNTwhkI85aouiAEB819ic=' 'sha256-2EqrEvcPzl8c6/TSGVvaVMEe7lg700MAz/te4/3kTYY=' 'sha256-y5uW69VItKj51mcc7UD9qfptDVUqicZL+bItEpvVNDw=' 'sha256-DatsFGoJ8gFkzzxo47Ou76WZ+3QBPOQHtBu9p9b3DhA=' 'sha256-k95cyM8gFgPziZe5VQ2IvJvBUVyd5zFt2CokIUwqdHE=' 'sha256-PyCXNcEkzRWqbiNr087fizmiBBrq9O6GGD8eV3P09Ik=' 'sha256-RFqsjmAF1N5LnfpaHFvPqFlVkeIS/DtTAFor+JjJJVc=' 'sha256-2SQ55Erm3CPCb+k03EpNxU9bdV3XL9TnVTriDs7INZ4=' 'sha256-S/KSPe186K/1B0JEjbIXcCdpB97krdzX05S+dHnQjUs=' 'sha256-FlukkU82ZNE00G2TrHsH/yPyxOM3w+ZxvfuhvuFPnUw=' 'sha256-2zZW4Jcwd05ccL428yqAJrFBz0W+zZ84jSu9AoKa75Q=' 'sha256-3RIGhhApBii1KY+aW1xk7kFyoQY8vSVE5DfT7E9SJUc=' 'sha256-9pXOIwF4N0gPltLd3AI69lkCjSC2H/Eb3sc5zdmUyYU=' 'sha256-jou6v/Nleyzoc+LXktAv1Fp8M807dVVxy7E/yzVljHc=' 'sha256-6E4e/3dSvj/8JZT2S2yR91mspqM6MyOpKl5lrhHsZa8=' 'sha256-JfJ82reKxtqugVbfRGw/O/1x1Lm1I09rHueXSwvbRws=' 'sha256-BbV1i75oYRtLtfDWs7tnA8QLF5EOO1dVHKL0prVd/fQ=' 'sha256-3woF8BZ54TeXM+czaH3aXoaJsVpiamuAKFsXDykAR/Q=' 'sha256-vIfNcKb8ixJg1cfJIoNNYjWcm0lezj1/XpUNFiZyVsU=' 'sha256-cLsHUHFgT/VGX04cZrJ9xgm4HbzTR7ptutkxK+7BlMk=' 'sha256-BwU8jMnQYUhjOpsDVABpfddV/DlP1ZYrFcTumYw7x54=' 'sha256-wz6ika9i3WU3bpUPdhYDZeO/NrDQniDyiscN0LWnyaY=' 'sha256-wy4DvlEW9PHPIGvQJW6Wv4woBSa/0LJHs8LHsBVVXCs=' 'sha256-065A0cJTDQ+hyKvufSL/flW02hIbgLndOINLRWux6To=' 'sha256-Ga5SLB8hPdWUE8Wb6LgZ05D9Z5vrdLAaPbDBW2m3BI8=' static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com platform.linkedin.com platform-akam.linkedin.com platform-ecst.linkedin.com platform-azur.linkedin.com snap.licdn.com merchantpool1.linkedin.com/mdt.js; img-src data: blob: * 'self' *.licdn.com android-webview-video-poster:; font-src data: * 'self' *.licdn.com; style-src 'self' 'unsafe-inline' static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com; media-src 'self' *.licdn.com *.lynda.com; worker-src 'self' blob: static.licdn.com static-exp1.licdn.com static-exp2.licdn.com static-exp3.licdn.com; frame-src 'self' www.youtube.com/embed/ www.youtube-nocookie.com/embed/ lnkd.demdex.net smartlock.google.com accounts.google.com player.vimeo.com *.linkedin.com www.slideshare.net *.megaphone.fm *.omny.fm *.sounder.fm msit.powerbi.com app.powerbi.com linkedin.github.io *.licdn.com *.adnxs.com acdn.adnxs-simple.com radar.cedexis.com edge-auth.microsoft.com flo.uri.sh li.protechts.net *.xlgmedia.com *.px-cloud.net merchantpool1.linkedin.com; frame-ancestors 'self' *.www.linkedin.com:*; manifest-src 'self'; report-uri https://www.linkedin.com/security/csp?f=d
X-li-fabric prod-ltx1
Pragma no-cache
Expires Thu, 01 Jan 1970 00:00:00 GMT
Cache-control no-cache, no-store, no-transform
X-li-pop cf-prod-ltx1-x
X-li-proto http/2
X-li-uuid AAZZe2DIeYdRMJU6qI5cpg==
Set-cookie __cf_bm=edNJ_fETRtQu6lE2nUGie_wvOmTTOy6jak_Yov8DJ_o-1787236299.8034558-1.0.1.1-Fsvs_lK2Ysvb0C.zWQLBP2N0lxbEsKtAOqWc8sK0yW97Wxi_Wmghjc6QcexJn4tkgKmJKciIpXFn7np6KOsFtscKmSjUcLIKmpSkI5S2djXozHw9A1Ndw5oLE7zSacco; HttpOnly; SameSite=None; Secure; Path=/; Domain=linkedin.com; Expires=Thu, 20 Aug 2026 15:01:40 GMT
Cf-cache-status DYNAMIC
Server cloudflare
Cf-ray a2e21a59ce858504-CDG
Alt-svc h3=":443"; ma=86400
