Domain duolearn.app
CLOUDFLARENET
Software information

cloudflare cloudflare

tcp/443 tcp/80 tcp/8443

  • Open service 104.21.14.202:8443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 521 <none>
Date: Sun, 11 Jan 2026 06:59:17 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878d5d849b74-FRA
alt-svc: h3=":8443"; ma=86400


error code: 521
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 104.21.14.202:80 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 403 Forbidden
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
cache-control: no-cache
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=n3szNhN0KDlD1EzremYQU7y%2BClLvAwuYhO5lIf6rWZa3OxEuuykLYzDkrki5duW2U0LzREdtVHoLCLF%2F1Sg1m4YY4NcFkeT4bnx%2Fyg%3D%3D"}]}
Server: cloudflare
CF-RAY: 9bc2878d4ca8579c-FRA
alt-svc: h3=":443"; ma=86400


<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 104.21.14.202:443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 525 <none>
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878d6bba50d5-LHR
alt-svc: h3=":443"; ma=86400


error code: 525
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3034::6815:eca:80 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 403 Forbidden
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
cache-control: no-cache
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=jHevPjeQceGv61Olq0AAcFYfvsx7eMjNWaU4CoXtNSsUFZp4DSZ9QGIhUHU3h7bXfEvU7g7hYZRUXs9AXQxb0cJ5luihnU%2Bo3vvc8RAkCx5Mjzmf5QSouw%3D%3D"}]}
Server: cloudflare
CF-RAY: 9bc2878d4fae0bd0-AMS
alt-svc: h3=":443"; ma=86400


<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3033::ac43:a089:8443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 521 <none>
Date: Sun, 11 Jan 2026 06:59:18 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc28793297bc9aa-LHR
alt-svc: h3=":8443"; ma=86400


error code: 521
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3033::ac43:a089:443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 525 <none>
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878cfd5b9253-FRA
alt-svc: h3=":443"; ma=86400


error code: 525
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3033::ac43:a089:80 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 403 Forbidden
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
cache-control: no-cache
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=O7%2Bzxbpocto1G4EQOeUbNcl91mPn%2FL2d04Qy8WUKwcWHj6QJPANkWqKRUKxXPo25acWOx26fVIQv3mFNpN3oIfW2c1JciLjJPn92ZMvs4W7CXg5sq2ZqsQ%3D%3D"}]}
Server: cloudflare
CF-RAY: 9bc2878cf9b196e5-AMS
alt-svc: h3=":443"; ma=86400


<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3034::6815:eca:8443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 521 <none>
Date: Sun, 11 Jan 2026 06:59:08 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc287926af90a58-AMS
alt-svc: h3=":8443"; ma=86400


error code: 521
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 172.67.160.137:80 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 403 Forbidden
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
cache-control: no-cache
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=3ir1cQivy%2Be55CVobXkMxgw7CzyjUvp6n8wjyROFojRkzRye1MPVo3NfInPnTOLT4aeecprLFSgtAUQEAD5jatednt3o2yRUsxDvxQ%3D%3D"}]}
Server: cloudflare
CF-RAY: 9bc2878c49b018d8-FRA
alt-svc: h3=":443"; ma=86400


<html><body><h1>403 Forbidden</h1>
Request forbidden by administrative rules.
</body></html>
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 172.67.160.137:443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 525 <none>
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878c6bef9b8c-FRA
alt-svc: h3=":443"; ma=86400


error code: 525
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 172.67.160.137:8443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 521 <none>
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878c1da2dc81-FRA
alt-svc: h3=":8443"; ma=86400


error code: 521
    Found 2026-01-11 by HttpPlugin
    Create report

  • Open service 2606:4700:3034::6815:eca:443 · duolearn.app

    2026-01-11 06:59 

    HTTP/1.1 525 <none>
Date: Sun, 11 Jan 2026 06:59:06 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: close
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9bc2878c0ecdd275-FRA
alt-svc: h3=":443"; ma=86400


error code: 525
    Found 2026-01-11 by HttpPlugin
    Create report
duolearn.app*.duolearn.app
Fingerprint:
c944efbef4703a6f9d7e02ba503acdca671fbee055c04dcf9b450bb6a95677b2
CN:
duolearn.app
Key:
ECDSA-256
Issuer:
WE1
Not before:
2025-11-13 04:13
Not after:
2026-02-11 05:11
Domain summary

duolearn.app 11

1 recorded
IP summary

104.21.14.202 2 2606:4700:3034::6815:eca 1 2606:4700:3033::ac43:a089 1 172.67.160.137 1

4 recorded

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