Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✘ Not available |
| IP Address | 172.67.157.228 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
🔒 🟡 HTTPS Not Available | The site does not support HTTPS. Google penalizes sites without SSL and browsers show warnings. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✘ Not available
IP Address 172.67.157.228
Server Software cloudflare
CDN Cloudflare
Compression gzip
🔒 🟡 HTTPS Not Available The site does not support HTTPS. Google penalizes sites without SSL and browsers show warnings.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | http://calcsprint.com:80 | 301 | HTTP/1.1 301 Moved Permanently |
| 2 | https://calcsprint.com/ | 200 | HTTP/2 200 |
#1 URL http://calcsprint.com:80
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#2 URL https://calcsprint.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 0.6 ms |
| TCP Connect | 2.3 ms |
| Time To First Byte (TTFB) | 46.3 ms |
| Content Download | 0.2 ms |
| Total Response Time | 46.5 ms |
DNS Lookup 0.6 ms
TCP Connect 2.3 ms
Time To First Byte (TTFB) 46.3 ms
Content Download 0.2 ms
Total Response Time 46.5 ms
Security
| HTTPS | ✘ Not active |
| HSTS | ✘ Not configured |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✘ Not active
HSTS ✘ Not configured
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | CalcSprint — Free Mental Math Game & Speed Drills |
| Meta Description | CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. |
| Robots Meta | index,follow,max-image-preview:large |
| Open Graph Title | CalcSprint — Free Mental Math Game & Speed Drills |
| Open Graph Description | CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. |
| Open Graph Image | https://calcsprint.com/assets/og/calcsprint-og.png |
| Twitter Card | summary_large_image |
| Twitter Title | CalcSprint — Free Mental Math Game & Speed Drills |
| Twitter Description | CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. |
| Twitter Image | https://calcsprint.com/assets/og/calcsprint-og.png |
Title CalcSprint — Free Mental Math Game & Speed Drills Meta Description CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. Robots Meta index,follow,max-image-preview:large Open Graph Title CalcSprint — Free Mental Math Game & Speed Drills Open Graph Description CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. Open Graph Image https://calcsprint.com/assets/og/calcsprint-og.png Twitter Card summary_large_image Twitter Title CalcSprint — Free Mental Math Game & Speed Drills Twitter Description CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. Twitter Image https://calcsprint.com/assets/og/calcsprint-og.png Detected Technologies
| Technology | Google Analytics Google Tag Manager Cloudflare |
Technology Google Analytics Google Tag Manager Cloudflare
HTTP Headers
| Date
| Tue, 28 Jul 2026 13:40:38 GMT |
| Content-type
| text/html |
| Cf-cache-status
| HIT |
| Cache-control
| public, max-age=0, must-revalidate |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Content-security-policy
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| Permissions-policy
| geolocation=(), camera=(), microphone=(), payment=(), usb=() |
| Referrer-policy
| strict-origin-when-cross-origin |
| X-content-type-options
| nosniff |
| X-frame-options
| SAMEORIGIN |
| Report-to
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| Etag
| W/"c4e08f49687cb89d95ef333da18f4c06" |
| Content-encoding
| gzip |
| Server
| cloudflare |
| Cf-ray
| a2244bfe5be16fc3-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Viewport | width=device-width, initial-scale=1, viewport-fit=cover |
| Theme-color | #0c0d0e |
| Description | CalcSprint is a fast mental math game with 4 difficulty levels, endless drills, and localized practice tips for daily browser training. |
| Robots | index,follow,max-image-preview:large |
Date Tue, 28 Jul 2026 13:40:38 GMT
Content-type text/html
Cf-cache-status HIT
Cache-control public, max-age=0, must-revalidate
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Content-security-policy default-src 'self'; script-src 'self' https://analytics.ahrefs.com https://*.ahrefs.com https://www.googletagmanager.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https://calcsprint.com https://*.google-analytics.com https://www.googletagmanager.com; connect-src 'self' https://analytics.ahrefs.com https://*.ahrefs.com https://*.google-analytics.com https://*.analytics.google.com https://www.googletagmanager.com; font-src 'self' data:; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'self'; manifest-src 'self'; worker-src 'self'; upgrade-insecure-requests
Permissions-policy geolocation=(), camera=(), microphone=(), payment=(), usb=()
Referrer-policy strict-origin-when-cross-origin
X-content-type-options nosniff
X-frame-options SAMEORIGIN
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=bejwS4Ik0WeKGEdBz0ny9wP5x1uPr3thwMu5Q6wVuB5CM5C7PMOcHO4cLnipFyN944TS9aqXoWxDyjZrBN385KZ9i4%2BaUV1P1IidRNHX9lIJHj3214SErBlOvxwYZsn1sPmpHnKr9LBg%2BfAGsQ%3D%3D"}]}
Etag W/"c4e08f49687cb89d95ef333da18f4c06"
Content-encoding gzip
Server cloudflare
Cf-ray a2244bfe5be16fc3-CDG
Alt-svc h3=":443"; ma=86400
