Profile: Khan Academy khanacademy.org

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Khan Academy is an educational website that offers free access to massive online courses.


  Uptime last 24 hours

  Response Time last 24 hours

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Current Status

Up

For 3 years

(Jul 29, 2015 3:51 p.m. GMT)

Uptime

100%

Latest Downtime

None recorded

  Web Speed Test Results

Loading timeRequestsTotal SizePerformace GradeMobile Usability
2057 ms 71 743.5 KB 46/100 100/100
Location: New York, USA
Date: 2018-05-26 04:16
TypeURLSize
0.0 s
0.0 s
0.0 s
0.0 s
0.0 s
0.0 s
Stylesheet /genfiles/stylesheets/en/shared-...
cdn.kastatic.org
10.9 KB
Script /genfiles/javascript/en/corelibs...
cdn.kastatic.org
81.9 KB
Script /genfiles/javascript/en/shared-p...
cdn.kastatic.org
23.4 KB
Script /genfiles/javascript/en/user-pro...
cdn.kastatic.org
1.3 KB
Script /genfiles/manifests/en/package-m...
cdn.kastatic.org
8.6 KB
Script /genfiles/javascript/en/analytic...
cdn.kastatic.org
4.1 KB
Script /genfiles/javascript/en/teacher-...
cdn.kastatic.org
534 B
Script /genfiles/javascript/en/apollo-p...
cdn.kastatic.org
61.6 KB
Script /genfiles/javascript/en/react-ro...
cdn.kastatic.org
14.6 KB
Script /genfiles/javascript/en/scroll-u...
cdn.kastatic.org
1.8 KB
Script /genfiles/javascript/en/content-...
cdn.kastatic.org
1010 B
Script /genfiles/javascript/en/shared-s...
cdn.kastatic.org
9.3 KB
Script /genfiles/javascript/en/shared-c...
cdn.kastatic.org
8.0 KB
Script /genfiles/javascript/en/layout-p...
cdn.kastatic.org
1.4 KB
Script /genfiles/javascript/en/link-pac...
cdn.kastatic.org
1.4 KB
Script /genfiles/javascript/en/button-p...
cdn.kastatic.org
4.0 KB
Script /genfiles/javascript/en/client-l...
cdn.kastatic.org
1.3 KB
Script /genfiles/javascript/en/reusable...
cdn.kastatic.org
1.1 KB
Script /genfiles/javascript/en/lazy-loa...
cdn.kastatic.org
1.6 KB
Script /genfiles/javascript/en/assignme...
cdn.kastatic.org
1.8 KB
Script /genfiles/javascript/en/wonder-b...
cdn.kastatic.org
4.9 KB
Script /genfiles/javascript/en/modal-pa...
cdn.kastatic.org
14.6 KB
Script /genfiles/javascript/en/page-pac...
cdn.kastatic.org
26.1 KB
Script /genfiles/javascript/en/app-shel...
cdn.kastatic.org
5.0 KB
Script /genfiles/javascript/en/corelibs...
cdn.kastatic.org
132.0 KB
Script /genfiles/javascript/en/session-...
cdn.kastatic.org
3.7 KB
Script /gtm.js
www.googletagmanager.com
22.1 KB
Script /analytics.js
www.google-analytics.com
14.4 KB
Image /r/collect
www.google-analytics.com
199 B
Font /fonts/Lato-Regular.woff2
cdn.kastatic.org
13.8 KB
Image /images/spinner-dark.svg
cdn.kastatic.org
32.2 KB
Fetch /api/internal/_bb/bigbingo/mark_...
www.khanacademy.org
86 B
Fetch /api/internal/_bb/bigbingo/mark_...
www.khanacademy.org
41 B
Fetch /genfiles/javascript/en/moment-p...
cdn.kastatic.org
14.7 KB
Fetch /genfiles/javascript/en/react-co...
cdn.kastatic.org
4.1 KB
Fetch /genfiles/javascript/en/corelibs...
cdn.kastatic.org
105 B
Fetch /genfiles/javascript/en/text-inp...
cdn.kastatic.org
2.8 KB
Fetch /genfiles/javascript/en/button-t...
cdn.kastatic.org
1.6 KB
Fetch /genfiles/javascript/en/zero-rat...
cdn.kastatic.org
1.1 KB
Fetch /genfiles/javascript/en/item-lis...
cdn.kastatic.org
2.3 KB
Fetch /genfiles/javascript/en/login-pa...
cdn.kastatic.org
35.8 KB
Fetch /genfiles/javascript/en/balance-...
cdn.kastatic.org
3.7 KB
Fetch /genfiles/javascript/en/image-lo...
cdn.kastatic.org
2.0 KB
Fetch /genfiles/javascript/en/modules-...
cdn.kastatic.org
2.7 KB
Fetch /genfiles/javascript/en/error-pa...
cdn.kastatic.org
9.1 KB
Fetch /genfiles/javascript/en/swap-chi...
cdn.kastatic.org
2.0 KB
Fetch /genfiles/javascript/en/viewport...
cdn.kastatic.org
1.7 KB
Fetch /genfiles/javascript/en/breadcru...
cdn.kastatic.org
1.6 KB
Fetch /genfiles/javascript/en/logged-o...
cdn.kastatic.org
11.4 KB
Fetch /genfiles/javascript/en/signup-l...
cdn.kastatic.org
1.1 KB
Fetch /genfiles/javascript/en/toast-pa...
cdn.kastatic.org
2.3 KB
Fetch /genfiles/javascript/en/endorsem...
cdn.kastatic.org
13.0 KB
Fetch /genfiles/javascript/en/notifica...
cdn.kastatic.org
25.4 KB
Fetch /genfiles/stylesheets/en/notific...
cdn.kastatic.org
1.8 KB
Fetch /api/internal/_bb/bigbingo/mark_...
www.khanacademy.org
41 B
Script /ki.js/53782/bH0.js
s3.amazonaws.com
50.7 KB
Font /fonts/Lato-Bold.woff2
cdn.kastatic.org
14.0 KB
Font /fonts/Lato-Regular-ext.woff2
cdn.kastatic.org
2.9 KB
Image /genfiles/topic-icons/icons/arit...
cdn.kastatic.org
2.3 KB
Image /genfiles/topic-icons/icons/scie...
cdn.kastatic.org
2.2 KB
Image /genfiles/topic-icons/icons/comp...
cdn.kastatic.org
1.1 KB
Image /genfiles/topic-icons/icons/huma...
cdn.kastatic.org
5.8 KB
Image /genfiles/topic-icons/icons/econ...
cdn.kastatic.org
1.8 KB
Image /genfiles/topic-icons/icons/sat_...
cdn.kastatic.org
2.7 KB
Image /genfiles/topic-icons/icons/coll...
cdn.kastatic.org
1.8 KB
Fetch /api/internal/_mt/page_perf_log
www.khanacademy.org
272 B
Fetch /api/internal/_bb/bigbingo/mark_...
www.khanacademy.org
41 B
Image /images/homepage/blue-mountains.svg
cdn.kastatic.org
8.3 KB
XHR /json/
geo.qualaroo.com
431 B
Fetch /api/internal/_mt/elog
www.khanacademy.org
226 B
Fetch /api/internal/_bb/bigbingo/mark_...
www.khanacademy.org
41 B
Total requests: 71 743.5 KB Load end time: 2.06s
DateLoad speedRequestsPage size
May 26, 2018, 4:16 a.m. (current result)2.06s71743.5 KB

  Domain Health Check Results

DNS
4 Errors
0 Warnings
1 Passed
Web Server
0 Errors
0 Warnings
4 Passed
Mail Server
0 Errors
0 Warnings
0 Passed
Blacklist/Malware
0 Errors
0 Warnings
2 Passed

DNS

Type Test Result
DNS Get DNS Records Click "More Info" to review your DNS records.
NS   ns-125.awsdns-15.com.
NS   ns-1489.awsdns-58.org.
NS   ns-1664.awsdns-16.co.uk.
NS   ns-798.awsdns-35.net.
WHOIS Get WHOIS Records Click "More Info" to review your WHOIS records.
Registrant Name: shantanu sinha
Nameservers: ns-1489.awsdns-58.org,ns-125.awsdns-15.com,ns-1664.awsdns-16.co.uk,ns-798.awsdns-35.net
Expires: 2019-03-14
Registrant Email: bills@khanacademy.org
Registrar: godaddy.com, llc
Registrant Org: khan academy
Admin Email: bills@khanacademy.org
Tech Email: bills@khanacademy.org
Nameserver DNS on ns-1664.awsdns-16.co.uk DNS record mismatch.
DNS CRITICAL - expected 'ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.' but got '"botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU","globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig","google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4","spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all","v=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all",1 aspmx.l.google.com.,10 aspmx2.googlemail.com.,10 aspmx3.googlemail.com.,23.23.224.106,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.'
Nameserver DNS on ns-1489.awsdns-58.org DNS record mismatch.
DNS CRITICAL - expected 'ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.' but got '"botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU","globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig","google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4","spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all","v=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all",1 aspmx.l.google.com.,10 aspmx2.googlemail.com.,10 aspmx3.googlemail.com.,23.23.224.106,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.'
Nameserver DNS on ns-125.awsdns-15.com DNS record mismatch.
DNS CRITICAL - expected 'ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.' but got '"botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU","globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig","google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4","spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all","v=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all",1 aspmx.l.google.com.,10 aspmx2.googlemail.com.,10 aspmx3.googlemail.com.,23.23.224.106,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.'
Nameserver DNS on ns-798.awsdns-35.net DNS record mismatch.
DNS CRITICAL - expected 'ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.' but got '"botify-site-verification=sGRcFNKzIkHzx1jtsQ7YkiT8hgWB6RiU","globalsign-domain-verification=qV_5Us2mt6FO1Ig5hnG4kYHESYAxuH5-qZ0cRXC-Ig","google-site-verification=sHrvDlgokhtbjBWsn8Dhu616EFRRv8GD0C1AU4_1gl4","spf2.0/pra include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all","v=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.sailthru.com include:mailgun.org include:_netblocks.khanacademy.org -all",1 aspmx.l.google.com.,10 aspmx2.googlemail.com.,10 aspmx3.googlemail.com.,23.23.224.106,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-125.awsdns-15.com.,ns-1489.awsdns-58.org.,ns-1664.awsdns-16.co.uk,ns-1664.awsdns-16.co.uk.,ns-798.awsdns-35.net.'
WHOIS Domain Expiry WHOIS OK - 1049 days left for domain, expires '2019-03-14'.
WHOIS OK - 1049 days left for domain, expires '2019-03-14'.
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Web Server

Type Test Result
HTTP Web Server HTTP HTTP OK: HTTP/1.1 301 Moved Permanently - 369 bytes in 0.010 second response time
HTTP OK: HTTP/1.1 301 Moved Permanently - 369 bytes in 0.010 second response time
SSH SSH SSH OK - OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.4 (protocol 2.0)
SSH OK - OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.4 (protocol 2.0)
SSL Certificate SSL Certificate Expiry OK - Certificate '*.khanacademy.org' will expire on Sun Nov 18 20:35:00 2018.
OK - Certificate '*.khanacademy.org' will expire on Sun Nov 18 20:35:00 2018.
HTTPS Web Server HTTPS HTTP OK: HTTP/1.1 301 Moved Permanently - 369 bytes in 0.014 second response time
HTTP OK: HTTP/1.1 301 Moved Permanently - 369 bytes in 0.014 second response time
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Mail Server

Type Test Result
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Blacklist/Malware

Type Test Result
Virus & Malware Virus & Malware MALWARE OK
MALWARE OK
Blacklist Spam Blacklists OK: 23.23.224.106 not on known spam blacklists (91 blacklists checked.)
OK: 23.23.224.106 not on known spam blacklists
 (91 blacklists checked.)
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