Is o2.cz down right now?
No one has reported a problem in the last hour.
Reports, last 24 hours
0 reports · baseline about 3 per hour| Problem reported | No reports in the last 24 hours. |
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One email when o2.cz goes down and one when it recovers. No account needed; unsubscribe from any email.
What we checked 03:06:50 UTC
| Layer | Result | Outcome |
|---|---|---|
| DNS | o2.cz resolves to 160.218.161.162 | pass |
| TLS | Certificate from DigiCert Inc, expires 2026-10-29 | pass |
| HTTP, Phoenix | HTTP 200 in 1.62 s 1 s ago | pass |
| HTTP, Mumbai | HTTP 200 in 2.23 s · via bom1 36 min ago | pass |
| HTTP, Phoenix | HTTP 200 in 2.42 s · via PHX 36 min ago | pass |
| HTTP, Singapore | HTTP 200 in 1.89 s · via sin1 36 min ago | pass |
| HTTP, Cape Town | HTTP 200 in 1.67 s · via cpt1 36 min ago | pass |
| HTTP, San Francisco | HTTP 200 in 1.47 s · via sfo1 36 min ago | pass |
| HTTP, Paris | HTTP 200 in 0.25 s · via cdg1 36 min ago | pass |
| Content | Page title: “O2 | Mobilní tarif, internet, televize a balíčky O2 Spolu” | – |
| Reputation | Run the trust check | – |
Outage history, 90 days
No incidents recorded in the last 90 days.
Common questions
Is o2.cz down for everyone or just me?
Compare the test from your browser above with our server checks. If our servers reach o2.cz and your browser cannot, the problem is on your connection, DNS or network. If both fail, the site is down.
How do you know if o2.cz is down?
We request the homepage from 8 locations, check DNS, the TLS certificate and the HTTP response, and compare the page content with what we saw before. We also read the service's official status feed where one exists and count visitor reports against the usual rate for the hour.
What can I do while it is down?
Subscribe to the alert on this page and we will email you when it recovers. Clearing your DNS cache or switching networks only helps when our servers can reach the site and your browser cannot.