Cern is down? Current uptime and performance status in September 2026
https://www.cern.chChecked 2 hours ago
Cern has uptime of 100 % with 0 incidents in the available monitoring period. The performance score is 54 along with speed index of 2.34 seconds. Cern has SEO score of 77 and PWA score of 96. Cern certificate is good and will expire in 70 days. Realtime Performance and uptime status contains uptime monitoring metrics, performance monitoring, chrome ux metrics, global uptime and SSL certificate details.
Health Metrics
Availability
100%
Response time
1.70s
Downtime
-
Performance Metrics
Speed index
2.34
s
Performance
54
/100
SEO
77
/100
PWA
96
/100
Accessibility
97
/100
UX Metrics
No data available
No data available
Locations
SSL Certificate Details
Valid- Expiry
- 70 days
- Valid till
- Tue Nov 24 2026
- Domains
- DNS:www.cern.ch, DNS:*.app.cern.ch, DNS:*.apptest.cern.ch, DNS:*.docs.cern.ch, DNS:*.web.cern.ch, DNS:*.webtest.cern.ch, DNS:about.cern, DNS:accelerating-news.eu, DNS:acceleratingnews.eu, DNS:accelerators.cern, DNS:againstcovid19.cern, DNS:alice.cern, DNS:aliceinfo.cern.ch, DNS:ams02.space, DNS:antimatter.cern, DNS:arts.cern, DNS:at.cern, DNS:atlas.cern, DNS:awake.cern, DNS:beamlineforschools.cern, DNS:beams.cern, DNS:belgium.cern, DNS:bulletinserv.cern.ch, DNS:careers.cern, DNS:cern.ch, DNS:cern.int, DNS:cern70.cern, DNS:cernandsocietyfoundation.cern, DNS:chis.cern, DNS:cixp.net, DNS:clear.cern, DNS:clic.cern, DNS:cms.cern, DNS:computing.cern, DNS:cosmicrays.cern, DNS:darkmatter.cern, DNS:dashb-cms-vo-feed.cern.ch, DNS:education.cern, DNS:engineering.cern, DNS:environment.cern, DNS:europeanstrategy.cern, DNS:experiments.cern, DNS:flair.cern, DNS:fluka.cern, DNS:giving.cern, DNS:groups.cern.ch, DNS:higgsboson.cern, DNS:home.cern, DNS:hse.cern, DNS:ideasquare.cern, DNS:ifast-project.eu, DNS:info.cern.ch, DNS:internationalrelations.cern, DNS:ippog.org, DNS:isolde.cern, DNS:jobs.cern, DNS:knowledge.cern, DNS:kt.cern, DNS:learn.cern, DNS:lhc.cern, DNS:library.cern, DNS:medicis.cern, DNS:monit.cern.ch, DNS:news.cern, DNS:newsroom.cern, DNS:nic.cern, DNS:norway.cern, DNS:open-quantum-institute.cern, DNS:opendays.cern, DNS:openlab.cern, DNS:openscience.cern, DNS:opensource.cern, DNS:oqi.cern, DNS:particles.cern, DNS:pensionfund.cern.ch, DNS:physics.cern, DNS:press.cern, DNS:quantum.cern, DNS:quantum.cern.ch, DNS:root.cern, DNS:root.cern.ch, DNS:science.cern, DNS:sciencegateway.cern, DNS:scienceinschool.org, DNS:scientific-info.cern, DNS:search.cern.ch, DNS:sparks.cern, DNS:staff-association.cern, DNS:standardmodel.cern, DNS:supersymmetry.cern, DNS:teachers.cern, DNS:technology.cern, DNS:theory.cern, DNS:united-states.cern, DNS:ventureconnect.cern, DNS:visit.cern, DNS:voisins.cern, DNS:webfest.cern, DNS:www.ams02.space, DNS:www.arts.cern, DNS:www.atlas.cern, DNS:www.cern, DNS:www.cern.int, DNS:www.cixp.net, DNS:www.home.cern
- Issued for
- CERN Organisation Européenne pour la Recherche Nucléaire, Meyrin, Genève, CH
- Issued by
- Sectigo Limited, GB
Performance monitoring simplified
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