Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 51.91.139.53 |
| Server Software | Apache/2 |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🟡 Slow Response (1495 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 51.91.139.53
Server Software Apache/2
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🟡 Slow Response (1495 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
Performance
| DNS Lookup | 4.1 ms |
| TCP Connect | 9.6 ms |
| TLS Handshake | 9 ms |
| Time To First Byte (TTFB) | 1453.6 ms |
| Content Download | 41.8 ms |
| Total Response Time | 1495.4 ms |
DNS Lookup 4.1 ms
TCP Connect 9.6 ms
TLS Handshake 9 ms
Time To First Byte (TTFB) 1453.6 ms
Content Download 41.8 ms
Total Response Time 1495.4 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=63072000; includeSubDomains; preload |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=63072000; includeSubDomains; preload
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
Detected Technologies
| Technology | Bootstrap jQuery Google Analytics Cloudflare Apache PHP Node.js Hotjar |
Technology Bootstrap jQuery Google Analytics Cloudflare Apache PHP Node.js Hotjar
HTTP Headers
| Expires
| Thu, 19 Nov 1981 08:52:00 GMT |
| Cache-control
| no-store, no-cache, must-revalidate |
| Pragma
| no-cache |
| X-frame-options
| SAMEORIGIN |
| Set-cookie
| as_id=2fea609221c639b0a81c3fc20b0ddb9a; expires=Thu, 28-Jan-2027 06:01:49 GMT; Max-Age=15901200; path=/; domain=.centraliens-lyon.net; secure; HttpOnly; SameSite=Lax; SameSite=None; Secure |
| Vary
| Accept-Encoding,Origin |
| Content-encoding
| gzip |
| X-xss-protection
| 1; mode=block |
| X-content-type-options
| nosniff |
| Access-control-allow-credentials
| true |
| Strict-transport-security
| max-age=63072000; includeSubDomains; preload |
| Content-security-policy
| default-src https: 'unsafe-eval' 'unsafe-inline' wss://*.hotjar.com *.hotjar.com data:;img-src * data: blob:; connect-src 'self' wss://*.hotjar.com *.hotjar.com *.hotjar.io *.addthis.com *.pa-cd.com lydia-app.com *.lydia-app.com *.openstreetmap.org maps.googleapis.com *.analytics.google.com *.google-analytics.com *.gstatic.com *.hcaptcha.com *.facebook.com *.raygun.io wss://*.crisp.chat *.cometchat.io *.api-eu.cometchat.io *.widget-eu.cometchat.io wss://*.websocket-eu.cometchat.io cdnjs.cloudflare.com https://app https://www.centraliens-lyon.net/ https://www.technica-magazine.fr/ ; object-src 'self' https://www.youtube.com https://www.dailymotion.com; frame-ancestors 'self' ; base-uri https://www.centraliens-lyon.net/; form-action 'self' https://login.microsoftonline.com/ https://netanswer.rpxnow.com https://preprod-tpeweb.e-transactions.fr/ https://tpeweb.e-transactions.fr/ https://paiement.creditmutuel.fr https://systempay.cyberpluspaiement.com https://payment-webinit-mercanet.test.sips-atos.com/paymentInit https://payment-webinit-mercanet.test.sips-services.com/paymentInit https://payment-webinit.mercanet.bnpparibas.net/paymentInit https://old.pta.netanswer.fr https://www.paristech-alumni.org https://www.whats4u.org https://whats4u.org https://wats4u.com.alumnforce.org http://manageurs.mjb.lan https://manageurs.mjr1108.com https://www.xmp-consult.org https://tpeweb.paybox.com https://www.saferpay.com/ |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Tue, 28 Jul 2026 05:01:48 GMT |
| Server
| Apache/2 |
Meta Tags
| Apple-itunes-app | app-id=1231933704 |
| Google-play-app | app-id=fr.netanswer.acl |
| Content-Type | text/html; charset=UTF-8 |
| Viewport | width=device-width, initial-scale=1 |
| Keywords | anciens élèves, Centrale, association, Centrale Lyon, ACL |
| Author | ACL |
| Csrf-token | 4gg8Tb3IaqASScqDrRcTAQpT7BTJoi4ZLHuF15VPPaoTwZmjm9YfHKfjHHzMwhDH |
| Robots | all |
Expires Thu, 19 Nov 1981 08:52:00 GMT
Cache-control no-store, no-cache, must-revalidate
Pragma no-cache
X-frame-options SAMEORIGIN
Set-cookie as_id=2fea609221c639b0a81c3fc20b0ddb9a; expires=Thu, 28-Jan-2027 06:01:49 GMT; Max-Age=15901200; path=/; domain=.centraliens-lyon.net; secure; HttpOnly; SameSite=Lax; SameSite=None; Secure
Vary Accept-Encoding,Origin
Content-encoding gzip
X-xss-protection 1; mode=block
X-content-type-options nosniff
Access-control-allow-credentials true
Strict-transport-security max-age=63072000; includeSubDomains; preload
Content-security-policy default-src https: 'unsafe-eval' 'unsafe-inline' wss://*.hotjar.com *.hotjar.com data:;img-src * data: blob:; connect-src 'self' wss://*.hotjar.com *.hotjar.com *.hotjar.io *.addthis.com *.pa-cd.com lydia-app.com *.lydia-app.com *.openstreetmap.org maps.googleapis.com *.analytics.google.com *.google-analytics.com *.gstatic.com *.hcaptcha.com *.facebook.com *.raygun.io wss://*.crisp.chat *.cometchat.io *.api-eu.cometchat.io *.widget-eu.cometchat.io wss://*.websocket-eu.cometchat.io cdnjs.cloudflare.com https://app https://www.centraliens-lyon.net/ https://www.technica-magazine.fr/ ; object-src 'self' https://www.youtube.com https://www.dailymotion.com; frame-ancestors 'self' ; base-uri https://www.centraliens-lyon.net/; form-action 'self' https://login.microsoftonline.com/ https://netanswer.rpxnow.com https://preprod-tpeweb.e-transactions.fr/ https://tpeweb.e-transactions.fr/ https://paiement.creditmutuel.fr https://systempay.cyberpluspaiement.com https://payment-webinit-mercanet.test.sips-atos.com/paymentInit https://payment-webinit-mercanet.test.sips-services.com/paymentInit https://payment-webinit.mercanet.bnpparibas.net/paymentInit https://old.pta.netanswer.fr https://www.paristech-alumni.org https://www.whats4u.org https://whats4u.org https://wats4u.com.alumnforce.org http://manageurs.mjb.lan https://manageurs.mjr1108.com https://www.xmp-consult.org https://tpeweb.paybox.com https://www.saferpay.com/
Content-type text/html; charset=UTF-8
Date Tue, 28 Jul 2026 05:01:48 GMT
Server Apache/2
