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Stackoverflow is an online question and answer website for programmers.


  Uptime last 24 hours

  Response Time last 24 hours

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Current Status

Up

For 1 month

(Jun 12, 2018 5:04 p.m. GMT)

Uptime

100%

Latest Downtime

Jun 12, 2018
4:49 p.m. GMT

Lasted for 14 minutes

  Web Speed Test Results

Loading timeRequestsTotal SizePerformace GradeMobile Usability
4385 ms 50 489.3 KB 71/100 92/100
Location: Los Angeles, USA
Date: 2018-05-07 20:17
TypeURLSize
0.0 s
0.0 s
0.0 s
0.0 s
0.0 s
0.0 s
Script /ajax/libs/jquery/1.12.4/jquery....
ajax.googleapis.com
33.6 KB
Script /Js/stub.en.js
cdn.sstatic.net
13.9 KB
Stylesheet /Shared/stacks.css
cdn.sstatic.net
14.9 KB
Stylesheet /Sites/stackoverflow/primary.css
cdn.sstatic.net
64.9 KB
Image /EdUwb.png
i.stack.imgur.com
4.0 KB
Image /gfrSH.png
i.stack.imgur.com
795 B
Image /tKsDb.png
i.stack.imgur.com
375 B
Image /xqoqk.png
i.stack.imgur.com
1.1 KB
Image /5d55j.png
i.stack.imgur.com
1.7 KB
Image /av0Vi.png
i.stack.imgur.com
368 B
Image /lHPR7.png
i.stack.imgur.com
1.4 KB
Image /GXwX9.png
i.stack.imgur.com
537 B
Image /Sites/stackoverflow/img/sprites...
cdn.sstatic.net
3.0 KB
Image /img/hero/pattern.svg
cdn.sstatic.net
5.4 KB
Script /clc/clc.min.js
cdn.sstatic.net
3.5 KB
Script /tag/js/gpt.js
www.googletagservices.com
5.9 KB
Script /analytics.js
www.google-analytics.com
14.4 KB
Script /quant.js
secure.quantserve.com
5.0 KB
Script /beacon.js
sb.scorecardresearch.com
1.2 KB
Image /img/favicons-sprite16.png
cdn.sstatic.net
67.9 KB
Script /Js/full-anon.en.js
cdn.sstatic.net
35.5 KB
Stylesheet /clc/styles/clc.min.css
cdn.sstatic.net
22.8 KB
Script /adsid/integrator.js
adservice.google.com
662 B
Script /gpt/pubads_impl_203.js
securepubads.g.doubleclick.net
57.9 KB
Other /r/collect
www.google-analytics.com
244 B
Other /gps/event
stackoverflow.com
202 B
Script /rules-p-c1rF4kxgLUzNc.js
rules.quantcount.com
339 B
XHR /gampad/ads
securepubads.g.doubleclick.net
2.5 KB
Script /gpt/pubads_impl_rendering_203.js
securepubads.g.doubleclick.net
16.3 KB
Other /safeframe/1-0-23/html/container...
tpc.googlesyndication.com
1.8 KB
Document /safeframe/1-0-23/html/container...
tpc.googlesyndication.com
2.8 KB
Script /pagead/osd.js
pagead2.googlesyndication.com
25.2 KB
Script /markup.js
clc.stackoverflow.com
1.6 KB
Script /safeframe/1-0-23/js/ext.js
tpc.googlesyndication.com
6.6 KB
Script /dvbs_src.js
cdn.doubleverify.com
1.6 KB
Script /pagead/js/r20180502/r20110914/a...
tpc.googlesyndication.com
25.5 KB
Image /pixel
pixel.quantserve.com
479 B
Image /pcs/view
securepubads.g.doubleclick.net
282 B
Other /b
sb.scorecardresearch.com
726 B
Image /ECeK5.png
i.stack.imgur.com
7.2 KB
Image /impression.gif
clc.stackoverflow.com
154 B
Image /b2
sb.scorecardresearch.com
248 B
Script /dvbs_src_internal55.js
cdn.doubleverify.com
25.1 KB
Document /bst2tv3.html
cdn3.doubleverify.com
1.6 KB
Script /verify.js
rtb0.doubleverify.com
2.6 KB
Script /dv-match6.js
cdn.doubleverify.com
2.2 KB
Image /bsevent.gif
tps615.doubleverify.com
1.1 KB
Image /bsevent.gif
tps615.doubleverify.com
1.1 KB
Image /bsevent.gif
tps615.doubleverify.com
1.1 KB
Image /pcs/activeview
pagead2.googlesyndication.com
178 B
Total requests: 50 489.3 KB Load end time: 4.38s
DateLoad speedRequestsPage size
May 7, 2018, 8:17 p.m. (current result)4.38s50489.3 KB
May 7, 2018, 2:24 p.m.5.31s52486.3 KB
April 20, 2018, 7:06 a.m.2.41s48570.8 KB
April 6, 2018, 5:05 p.m.5.62s48500.6 KB

  Domain Health Check Results

DNS
4 Errors
0 Warnings
1 Passed
Web Server
0 Errors
0 Warnings
7 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.
A    151.101.1.69
A    151.101.129.69
A    151.101.193.69
A    151.101.65.69
NS   ns-1033.awsdns-01.org.
NS   ns-358.awsdns-44.com.
NS   ns-cloud-e1.googledomains.com.
NS   ns-cloud-e2.googledomains.com.
WHOIS Get WHOIS Records Click "More Info" to review your WHOIS records.
Nameservers: ns-1033.awsdns-01.org,ns-358.awsdns-44.com,ns-cloud-e1.googledomains.com,ns-cloud-e2.googledomains.com
Expires: 2019-02-02
Registrar: name.com, inc.
Nameserver DNS on ns-1033.awsdns-01.org DNS record mismatch.
DNS CRITICAL - expected '151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.' but got '"MS=ms52592611","google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU","google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo","v=spf1 ip4:198.252.206.0/24 ip4:192.111.0.0/24 include:_spf.google.com include:mailgun.org ip4:64.34.80.172 include:mail.zendesk.com include:servers.mcsv.net include:sendgrid.net ip4:54.174.57.197 ~all",1 aspmx.l.google.com.,10 alt3.aspmx.l.google.com.,10 alt4.aspmx.l.google.com.,151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-1033.awsdns-01.org,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.'
Nameserver DNS on ns-cloud-e1.googledomains.com DNS record mismatch.
DNS CRITICAL - expected '151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.' but got '"MS=ms52592611","google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU","google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo","v=spf1 ip4:198.252.206.0/24 ip4:192.111.0.0/24 include:_spf.google.com include:mailgun.org ip4:64.34.80.172 include:mail.zendesk.com include:servers.mcsv.net include:sendgrid.net ip4:54.174.57.197 ~all",1 aspmx.l.google.com.,10 alt3.aspmx.l.google.com.,10 alt4.aspmx.l.google.com.,151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.'
Nameserver DNS on ns-358.awsdns-44.com DNS record mismatch.
DNS CRITICAL - expected '151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.' but got '"MS=ms52592611","google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU","google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo","v=spf1 ip4:198.252.206.0/24 ip4:192.111.0.0/24 include:_spf.google.com include:mailgun.org ip4:64.34.80.172 include:mail.zendesk.com include:servers.mcsv.net include:sendgrid.net ip4:54.174.57.197 ~all",1 aspmx.l.google.com.,10 alt3.aspmx.l.google.com.,10 alt4.aspmx.l.google.com.,151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-1033.awsdns-01.org,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.'
Nameserver DNS on ns-cloud-e2.googledomains.com DNS record mismatch.
DNS CRITICAL - expected '151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.' but got '"MS=ms52592611","google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU","google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo","v=spf1 ip4:198.252.206.0/24 ip4:192.111.0.0/24 include:_spf.google.com include:mailgun.org ip4:64.34.80.172 include:mail.zendesk.com include:servers.mcsv.net include:sendgrid.net ip4:54.174.57.197 ~all",1 aspmx.l.google.com.,10 alt3.aspmx.l.google.com.,10 alt4.aspmx.l.google.com.,151.101.1.69,151.101.129.69,151.101.193.69,151.101.65.69,5 alt1.aspmx.l.google.com.,5 alt2.aspmx.l.google.com.,ns-1033.awsdns-01.org.,ns-358.awsdns-44.com.,ns-cloud-e1.googledomains.com,ns-cloud-e1.googledomains.com.,ns-cloud-e2.googledomains.com.'
WHOIS Domain Expiry WHOIS OK - 217 days left for domain, expires '2019-02-02'.
WHOIS OK - 217 days left for domain, expires '2019-02-02'.
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Web Server

Type Test Result
HTTP Web Server HTTP HTTP OK: HTTP/1.1 301 Moved Permanently - 766 bytes in 0.040 second response time
HTTP OK: HTTP/1.1 301 Moved Permanently - 766 bytes in 0.040 second response time
HTTPS Web Server HTTPS HTTP OK: HTTP/1.1 200 OK - 671 bytes in 0.099 second response time
HTTP OK: HTTP/1.1 200 OK - 671 bytes in 0.099 second response time
SSL Certificate SSL Certificate Expiry SSL_CERT OK - x509 certificate '*.stackexchange.com' from 'DigiCert SHA2 High Assurance Server CA' valid until Aug 14 12:00:00 2019 GMT (expires in 410 days)
SSL_CERT OK - x509 certificate '*.stackexchange.com' from 'DigiCert SHA2 High Assurance Server CA' valid until Aug 14 12:00:00 2019 GMT (expires in 410 days)
Ping (ICMP) Ping (ICMP) - 151.101.1.69 PING OK - Packet loss = 0%, RTA = 10.94 ms
PING OK - Packet loss = 0%, RTA = 10.94 ms
Ping (ICMP) Ping (ICMP) - 151.101.129.69 PING OK - Packet loss = 0%, RTA = 11.24 ms
PING OK - Packet loss = 0%, RTA = 11.24 ms
Ping (ICMP) Ping (ICMP) - 151.101.193.69 PING OK - Packet loss = 0%, RTA = 10.85 ms
PING OK - Packet loss = 0%, RTA = 10.85 ms
Ping (ICMP) Ping (ICMP) - 151.101.65.69 PING OK - Packet loss = 0%, RTA = 11.40 ms
PING OK - Packet loss = 0%, RTA = 11.40 ms
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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: 151.101.193.69 not on known spam blacklists (91 blacklists checked.)
OK: 151.101.193.69 not on known spam blacklists
 (91 blacklists checked.)
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is done 1 day, 6 hours ago