Submitted URL: http://nhkmathvideostudent.runrenedu.com/
Effective URL: https://nhkmathvideostudent.runrenedu.com/
Submission: On July 11 via manual from US — Scanned from US

Summary

This website contacted 3 IPs in 1 countries across 2 domains to perform 16 HTTP transactions. The main IP is 108.181.32.77, located in Los Angeles, United States and belongs to AS40676, US. The main domain is nhkmathvideostudent.runrenedu.com.
TLS certificate: Issued by R3 on May 19th 2024. Valid for: 3 months.
This is the only time nhkmathvideostudent.runrenedu.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
14 108.181.32.77 40676 (AS40676)
2 2606:4700:303... 13335 (CLOUDFLAR...)
16 3
Apex Domain
Subdomains
Transfer
14 runrenedu.com
nhkmathvideostudent.runrenedu.com
466 KB
2 binary-person.dev
paps.binary-person.dev — Cisco Umbrella Rank: 543196
2 KB
16 2
Domain Requested by
14 nhkmathvideostudent.runrenedu.com nhkmathvideostudent.runrenedu.com
2 paps.binary-person.dev nhkmathvideostudent.runrenedu.com
paps.binary-person.dev
16 2

This site contains no links.

Subject Issuer Validity Valid
nhkmathvideostudent.runrenedu.com
R3
2024-05-19 -
2024-08-17
3 months crt.sh
binary-person.dev
WE1
2024-07-09 -
2024-10-07
3 months crt.sh

This page contains 1 frames:

Primary Page: https://nhkmathvideostudent.runrenedu.com/
Frame ID: 63B37FCD3EAF5FB2826CF84F7CD56BE5
Requests: 18 HTTP requests in this frame

Screenshot

Page Title

nhkmathvideostudent.runrenedu.com

Page URL History Show full URLs

  1. http://nhkmathvideostudent.runrenedu.com/ HTTP 307
    https://nhkmathvideostudent.runrenedu.com/ Page URL

Page Statistics

16
Requests

100 %
HTTPS

50 %
IPv6

2
Domains

2
Subdomains

3
IPs

1
Countries

468 kB
Transfer

467 kB
Size

0
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://nhkmathvideostudent.runrenedu.com/ HTTP 307
    https://nhkmathvideostudent.runrenedu.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

16 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
nhkmathvideostudent.runrenedu.com/
Redirect Chain
  • http://nhkmathvideostudent.runrenedu.com/
  • https://nhkmathvideostudent.runrenedu.com/
479 B
611 B
Document
General
Full URL
https://nhkmathvideostudent.runrenedu.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy openresty/1.21.4.1 /
Resource Hash
373ce3d88538996f0454d2430be27cdc8dfcbc5d6222a5e4d2f6ecb3645dd012

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

alt-svc
h3=":443"; ma=2592000
cache-control
max-age=30, must-revalidate
content-type
text/html
date
Thu, 11 Jul 2024 15:04:06 GMT
server
Caddy openresty/1.21.4.1

Redirect headers

Location
https://nhkmathvideostudent.runrenedu.com/
Non-Authoritative-Reason
HttpsUpgrades
main.a7c3c102.js
nhkmathvideostudent.runrenedu.com/static/js/
445 KB
446 KB
Script
General
Full URL
https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
d66602f4543e495c7a1c99cc7d29e14fc2f23fc02e5fced604c8b282561587d3

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:06 GMT
referrer-policy
no-referrer-when-downgrade
server
Caddy, openresty/1.21.4.1
alt-svc
h3=":443"; ma=2592000
content-type
application/javascript
main.fa2171d9.css
nhkmathvideostudent.runrenedu.com/static/css/
14 KB
14 KB
Stylesheet
General
Full URL
https://nhkmathvideostudent.runrenedu.com/static/css/main.fa2171d9.css
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
7e7539fef8ef77642d21898a60fb6c3bb3dfcaea71d8292901380edc4c06c23b

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:06 GMT
referrer-policy
no-referrer-when-downgrade
server
Caddy, openresty/1.21.4.1
alt-svc
h3=":443"; ma=2592000
content-type
text/css
pbjs.js
paps.binary-person.dev/ce/
1 KB
1 KB
Script
General
Full URL
https://paps.binary-person.dev/ce/pbjs.js
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2606:4700:3036::6815:23b2 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
7eec3429c76cb48e5fd457c5afb71b7cf34bc4298d53023bae8aea715443b4a9
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
content-encoding
br
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
79085
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
cf-bgj
minify
last-modified
Wed, 10 Jul 2024 17:06:02 GMT
server
cloudflare
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=c8%2F3zEjHr3iLArEIyxALhKRPrcoUAYt7DzZEagsU74RwdFtpFCbJXOJDRnBk%2BAxoJJn9ehtneufnP0%2FyUIGO3z%2FfUxjx2atAmSIMB3a4lq992bkk8CH6i%2F7KFhmLZS%2BSyY%2BXvWIAkcH9jL6lAKnyQV0pc7BN"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript
access-control-allow-origin
*
cache-control
public, max-age=14400
cf-ray
8a19af264f2e80d3-EWR
expires
Thu, 11 Jul 2024 19:04:07 GMT
generateSessionId
nhkmathvideostudent.runrenedu.com/api/
99 B
189 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/generateSessionId
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
efc51329629677ed58443279c107c8efbcb69a48f82d09c320e6532355915fd7

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
referrer-policy
no-referrer-when-downgrade
server
Caddy, openresty/1.21.4.1
content-type
application/json
generateSession
nhkmathvideostudent.runrenedu.com/api/
670 B
760 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/generateSession
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
56c5f183d24d54fcdc5f7161f16f9da00e07d44a0b270dd18e1847407a6f006c

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
referrer-policy
no-referrer-when-downgrade
server
Caddy, openresty/1.21.4.1
content-type
application/json
event
paps.binary-person.dev/api/
2 B
533 B
XHR
General
Full URL
https://paps.binary-person.dev/api/event
Requested by
Host: paps.binary-person.dev
URL: https://paps.binary-person.dev/ce/pbjs.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2606:4700:3036::6815:23b2 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
2689367b205c16ce32ed4200942b8b8b1e262dfc70d9bc9fbc77c49699a4f1df

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
Content-Type
text/plain

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
cf-cache-status
DYNAMIC
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Z6TRILIF0rNy1TZpch%2BGvBdfCJEM8Pj%2BvxG3YqSXX%2BgEI3YgRkPFjKGmt6H1nDQbHZrL%2BAvBEPFTtcWKPRCxDuLJ4HpcFHCSpwFI6Is%2BqU6UFGpccbH9oIKnblSFs9FHY7HvtrKcdnczKV6ILES3xZff3KX6"}],"group":"cf-nel","max_age":604800}
content-type
text/plain; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
cache-control
max-age=0, private, must-revalidate
access-control-allow-credentials
true
cf-ray
8a19af270db84334-EWR
alt-svc
h3=":443"; ma=86400
content-length
2
x-request-id
F-Ew2n2Ib4cZOhgCLBeD
favicon.png
nhkmathvideostudent.runrenedu.com/
561 B
632 B
Other
General
Full URL
https://nhkmathvideostudent.runrenedu.com/favicon.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
bd9b8dc5e4936e1d19cb5095a9a6de3cf82859cc2ff7bbbf561a8b5290a7f745

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
server
Caddy, openresty/1.21.4.1
content-length
561
content-type
text/html
sessionStatus
nhkmathvideostudent.runrenedu.com/api/
17 B
71 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/sessionStatus?id=6129c7854f0445828e7e55b222e71693
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
2c17579207838b82b2196b3695cb76cf43ef7b956703f1c9b70120a4262f40df

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
server
Caddy, openresty/1.21.4.1
uploadSession
nhkmathvideostudent.runrenedu.com/api/
2 B
59 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/uploadSession?id=6129c7854f0445828e7e55b222e71693&signedId=V6njwIQDo88yogMNU8u4H%2FR3Dm%2FNNDmCKd5v3ZvHPDY%3D&signed=5B%2Fbh6hKtwMatMyMdS1fGVp4rQGSqFrwUK3UHXNimSs%3D
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
2689367b205c16ce32ed4200942b8b8b1e262dfc70d9bc9fbc77c49699a4f1df

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
content-length
2
server
Caddy, openresty/1.21.4.1
configShuffling
nhkmathvideostudent.runrenedu.com/api/
2 B
59 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/configShuffling?id=6129c7854f0445828e7e55b222e71693&enable=true&reshuffle=true
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
2689367b205c16ce32ed4200942b8b8b1e262dfc70d9bc9fbc77c49699a4f1df

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
content-length
2
server
Caddy, openresty/1.21.4.1
sessionStatus
nhkmathvideostudent.runrenedu.com/api/
2 B
59 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/sessionStatus?id=6129c7854f0445828e7e55b222e71693
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
2689367b205c16ce32ed4200942b8b8b1e262dfc70d9bc9fbc77c49699a4f1df

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:07 GMT
content-length
2
server
Caddy, openresty/1.21.4.1
getSession
nhkmathvideostudent.runrenedu.com/api/
670 B
760 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/api/getSession?id=6129c7854f0445828e7e55b222e71693&signedId=V6njwIQDo88yogMNU8u4H%2FR3Dm%2FNNDmCKd5v3ZvHPDY%3D
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
92bfec8a92825bf6bf795b60a36d638f062f568816755f8b3ce82e9a61c566a0

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:08 GMT
referrer-policy
no-referrer-when-downgrade
server
Caddy, openresty/1.21.4.1
content-type
application/json
CHANGELOG.md
nhkmathvideostudent.runrenedu.com/
3 KB
3 KB
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/CHANGELOG.md
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
58590284d87d2a3a02f39ac8386c2e0ae7ac04d0e8ad810af7983f677f4d5301

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:08 GMT
cache-control
max-age=30, must-revalidate
server
Caddy, openresty/1.21.4.1
etag
p/1r/jG9urrtKElI3UTEwA==
content-length
2753
content-type
text/markdown
version
nhkmathvideostudent.runrenedu.com/
5 B
108 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/version
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
2306deab5abc025bcdea64017c121b95106baf78145aaf4eda3883e93979ce48

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:08 GMT
cache-control
max-age=30, must-revalidate
server
Caddy, openresty/1.21.4.1
etag
ddARhi72X//BFDezdFTOdg==
content-length
5
content-type
text/plain
version-opensource
nhkmathvideostudent.runrenedu.com/
5 B
108 B
Fetch
General
Full URL
https://nhkmathvideostudent.runrenedu.com/version-opensource
Requested by
Host: nhkmathvideostudent.runrenedu.com
URL: https://nhkmathvideostudent.runrenedu.com/static/js/main.a7c3c102.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
108.181.32.77 Los Angeles, United States, ASN40676 (AS40676, US),
Reverse DNS
Software
Caddy, openresty/1.21.4.1 /
Resource Hash
e7115f22d93c8e617827a5d70f6189a6f8ffeccf1d95db2633452aa5ed5a8a1b

Request headers

Referer
https://nhkmathvideostudent.runrenedu.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

date
Thu, 11 Jul 2024 15:04:08 GMT
cache-control
max-age=30, must-revalidate
server
Caddy, openresty/1.21.4.1
etag
hzNRmmD9Sd7oH+IhttootQ==
content-length
5
content-type
text/plain
truncated
/
157 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
2af6cb9ce34a2323d6df620480c63a1090a571b8817d8e63dd4d9aca8d1491ab

Request headers

Referer
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

Content-Type
image/svg+xml
truncated
/
172 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
81ccf075456ec457fdfa9a5dba519c478b3131f742ad44088dfa56381af9d115

Request headers

Referer
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Response headers

Content-Type
image/svg+xml

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5 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| regeneratorRuntime function| _ function| plausible object| chromeTabs object| rhSession

0 Cookies

2 Console Messages

Source Level URL
Text
network error URL: https://nhkmathvideostudent.runrenedu.com/favicon.png
Message:
Failed to load resource: the server responded with a status of 404 ()
network error URL: https://nhkmathvideostudent.runrenedu.com/api/sessionStatus?id=6129c7854f0445828e7e55b222e71693
Message:
Failed to load resource: the server responded with a status of 404 ()