Monitoring live across the UK

Your ISP promises speeds.
We prove what they deliver.

Slow evenings. Dropped calls. An ISP that says there's no fault on their end. A small device plugs into your router, checks your line every 10 seconds, and tells you with certainty whether the problem is yours or theirs.

Start monitoring How it works
NetCheck
Living Room
LIVE
Latency · real time
10ms Latency
0% Packet loss
Stable Status
Recent events
03:14 Speed test · 71.4 Mbps (89% of contract)
22:14 Connection restored · latency 11ms OK
21:47 ISP fault · 340ms latency, 18% packet loss ISP

The broadband problem in numbers

1 in 3 Broadband connections regularly underperform their contracted speed
94% Of ISP complaints with no supporting evidence go unresolved
60% Typical drop in speed during peak hours that ISPs don't advertise

ISPs are required to deliver what they sell you.

Most don't. And they count on you not being able to prove it.

Ofcom receives thousands of broadband complaints every year. The most common outcome is nothing — because without hard data, it's your word against your ISP's own diagnostic tools.

NetCheck changes the equation. It builds a timestamped record of exactly what your connection delivers, every 10 seconds, whether you're at your desk or not. When something goes wrong, the evidence is already there.

How it works

Plug in once. Evidence builds forever.

01

Plug in and forget

The NetCheck device connects to your router via ethernet. No app setup, no configuration. It starts monitoring the moment it's plugged in.

02

Monitors every 10 seconds

Latency and packet loss are checked continuously. Speed tests run three times a night, plus an automatic test the moment a fault is detected.

03

Evidence is ready when you need it

Every fault is logged with timestamps and traced to its source: your home network or your ISP. When you need to complain, the case is already built.

What you get

Everything you need to hold your ISP accountable.

  • Continuous latency monitoring

    Checks every 10 seconds, around the clock, against multiple independent servers

  • Automated speed tests

    Three per night, timed to match real usage patterns — plus an instant test when a fault fires

  • Confirmed fault attribution

    Analyses the network path between your device and the internet to confirm whether the fault is in your home or on your ISP's infrastructure

  • Evidence-grade timestamped logs

    Every event recorded with exact timestamps, data values, and attribution. Ready for ISP complaints and Ofcom referrals.

  • Live dashboard at app.netcheck.uk

    Full history, charts, and incident reports visible from any device, any time

How NetCheck diagnoses a fault
Home router
Normal
Latency 2ms
Packet loss 0%
Status Responding normally
ISP gateway
Fault detected · 21:47
Fault
Latency 340ms 22× normal
Packet loss 18%
Duration 27 mins
Internet
Reachable
Fault confirmed at ISP network level. Your home network is fine.
Speed dropped from 80 Mbps to 8 Mbps during fault · 14 May · 21:47–22:14

From the blog

Know your rights.
Know your broadband.

Explainers

What broadband speed numbers actually mean — and which ones matter

Download, upload, latency, jitter — broadband is full of numbers. Here's what each one measures, which matter most for what you do online, and how to tell if yours are good.

9 June 2026
Guides

How to complain to your ISP and actually get somewhere

Most broadband complaints go nowhere. This is a step-by-step guide to building a case, escalating correctly, and getting a real result.

28 May 2026
Consumer rights

Why your broadband is slower than advertised — and what you can do about it

ISPs advertise headline speeds that most customers never see. Here's why that happens, what the rules actually say, and how to build a case against your provider.

14 May 2026

Find out what your broadband
is really doing.

Set up takes two minutes. Monitoring starts immediately.
The evidence builds itself.

Get started at app.netcheck.uk