Cern is down? Current uptime and performance status in apr 2026

Health Metrics in last 24 hours

100 %

Availability

1.25 s

Response Time

0 s

Down time

Performance Metrics in last 24 hours

1.80 s

Speed Index

43 / 100

Perf. Score

100 / 100

SEO Score

96 / 100

PWA Score

80 / 100

Accessibility

UX Metrics

Information not available

SSL Certificate Details checked 19 hours ago

Validity

Valid

Expiry

209 days

Valid till

Tue Nov 24 2026

Domains

Issued for

CERN Organisation Européenne pour la Recherche Nucléaire, Meyrin, Genève, CH

Issued by

Sectigo Limited, GB

Cern has uptime of 100 % with 0 incidents in the last 24 hours. The performance score is 43 along with speed index of 1.80 seconds. Cern has SEO score of 100 and PWA score of 96. Cern certificate is good and will expire in 209 days. Realtime Performance and uptime status contains uptime monitoring metrics, performance monitoring, chrome ux metrics, global uptime and SSL certificate details.