Stackoverflow is down? Current uptime and performance status in sep 2025

Health Metrics in last 24 hours

100 %

Availability

0.15 s

Response Time

0 s

Down time

Performance Metrics in last 24 hours

1.75 s

Speed Index

65 / 100

Perf. Score

92 / 100

SEO Score

96 / 100

PWA Score

92 / 100

Accessibility

UX Metrics

Information not available

SSL Certificate Details checked 18 hours ago

Validity

Valid

Expiry

43 days

Valid till

Sun Oct 26 2025

Domains

DNS:www.stackoverflow.com

Issued for

, , ,

Issued by

Let's Encrypt, US

Stackoverflow has uptime of 100 % with 0 incidents in the last 24 hours. The performance score is 65 along with speed index of 1.75 seconds. Stackoverflow has SEO score of 92 and PWA score of 96. Stackoverflow certificate is good and will expire in 43 days. Realtime Performance and uptime status contains uptime monitoring metrics, performance monitoring, chrome ux metrics, global uptime and SSL certificate details.