UK ISP · AS5378
Is O2 down?
Live status
Degraded
975 ms
HEAD probe to o2.co.uk at . Page refreshes every 60 seconds.
What this measures: reachability of O2’s public web origin from a UK-cached vantage point. It is a useful early signal but does not replace the official status page below.
Official status page
https://status.o2.co.uk
Support on X
x.com/o2
Support phone
0344 809 0202
AS number
AS5378 — Telefónica O2 UK
About O2
O2 is one of the UK's big-four mobile networks, now part of Virgin Media O2. Its core mobile network operates under AS5378.
How we check
Every 60 seconds we issue a single HEAD request to o2.co.uk from a UK-cached origin and record reachability and latency. A reachable origin doesn’t guarantee the broadband or mobile network is fully healthy for end users — it’s an early signal, not an SLA monitor.
For the bigger picture across DNS, BGP, TLS and traffic, see the VP Pulse dashboard or read the full methodology.