CityFibre outages and problems
In the past 24 hours, 85 user reports came in for CityFibre. Counting only the 15-minute windows with a spike big enough to count as an outage, that comes to 100.00% uptime for the day.
The busiest 15-minute window had 10 reports, about 18 hours ago. That stays below our outage threshold, so it doesn't count as downtime.
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Elevated reports
Ended 18 h agoLasted 15 min10peak reports
CityFibre in October 2026
- Problem reports in October (since 28 October)
- 113
Monthly report for October 2026
What went wrong
What people said was wrong in recent problem reports for CityFibre.
Share of 20 recent reports that said what was wrong.
Where CityFibre problem reports come from
The map shows where recent problem reports for CityFibre came from in the UK. Big cities always send the most, so dots in many places point to a widespread problem, and one area far ahead of the rest can mean a regional one.
- Outage now
- Problems now
- Normal
Map outlines: Natural Earth.
CityFibre problem spikes, last 30 days
Since 28 October, CityFibre had no outage spikes, but 2 periods of elevated reports. The longest lasted 17 min, on 28 October.
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Elevated reports
Wed 28 Oct, 16:05–16:20Lasted 15 min11peak reports
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Elevated reports
Wed 28 Oct, 10:02–10:18Lasted 17 min11peak reports
A spike is a sharp rise in problem reports from users, kept exactly as this page showed it at the time. This history starts on 28 October 2026. Monthly reports for all services
How to fix CityFibre not working
CityFibre is up on our end, so if it won't work for you, the problem is most likely on your side. Work through these in order:
Your browser tries to reach cityfibre.com over your own connection, right now. Nothing is sent to us or stored.
Check the CityFibre report level
The top of the page shows whether problem reports are above their usual level, counted in 15-minute windows over the previous 24 hours. If they are above, the fault is likely wider than your connection; if they are not, work through your own kit.
Restart the CityFibre ONT and router
Unplug the power lead from the ONT and the router, wait 30 seconds, then plug the ONT back in first. Wait for its PON light to go solid before you power the router, because that order lets the optical link settle before the router asks for an address.
Check the CityFibre ONT lights
Find the small ONT box where the fibre enters your home and check that LOS is off and PON is solid green. A red LOS light means no optical signal, so call your broadband provider instead of resetting the router again.
Report the ONT fault to your ISP
If LOS stays red after a restart, tell your broadband provider the ONT has no optical signal and read out the serial number from the label. Do not unplug the fibre lead; the connector is fragile and a broken optical link is not a home fix.
While CityFibre is down: what to use instead
- Mobile hotspot Tether your laptop to your phone when you need a working connection for email, a file upload, or a support chat that cannot wait.
- Public Wi-Fi Use a library or cafe network for low-risk tasks; skip banking on a network you do not control.
- Provider phone line Call your provider's support line when the fault needs an engineer or an account fix, since the retail provider owns your contract even if the fibre network is at fault.
- Mobile data Keep the phone on mobile data for calls and maps.
Problems at the same time as CityFibre
Since 28 October, all 2 of CityFibre's spikes in problem reports overlapped a spike at another service.
When several services get problem reports at once, something they share, such as a cloud host or a network, can be the real cause. Matching times alone do not prove it.
Most often at the same time
How many of CityFibre's spikes overlapped one of theirs.
During the latest spike
CityFibre: Wed 28 Oct, 16:05 to 16:20
- ESPN Fantasy Football, outage,27 Oct 19:50 to 29 Oct 10:20
- TalkTalk, outage,08:44 to 20:39
- Rogers, outage,10:09 to 29 Oct 02:50
- TD Canada Trust, outage,11:20 to 22:35
- CIBC, outage,11:50 to 19:50
- RBC Royal Bank of Canada, outage,11:50 to 29 Oct 01:05
- Royal Mail, outage,11:50 to 18:50
- Straight Talk, outage,12:30 to 17:35
53 more services. Red dot: outage. Amber dot: elevated reports.
A spike is a sharp rise in problem reports from users, as the live pages showed it. Times are Central European time.
When people report CityFibre problems
The busiest hour for reports about CityFibre is 10:00 to 11:00 Central European time, and the busiest day is Wednesday.
By hour of the day
- 00:00 to 01:00: 0 reports on an average day
- 01:00 to 02:00: 0 reports on an average day
- 02:00 to 03:00: 0 reports on an average day
- 03:00 to 04:00: 0 reports on an average day
- 04:00 to 05:00: 0 reports on an average day
- 05:00 to 06:00: 0 reports on an average day
- 06:00 to 07:00: 0 reports on an average day
- 07:00 to 08:00: 0.03 reports on an average day
- 08:00 to 09:00: 0.42 reports on an average day
- 09:00 to 10:00: 0.42 reports on an average day
- 10:00 to 11:00: 0.63 reports on an average day
- 11:00 to 12:00: 0.44 reports on an average day
- 12:00 to 13:00: 0.3 reports on an average day
- 13:00 to 14:00: 0.3 reports on an average day
- 14:00 to 15:00: 0.36 reports on an average day
- 15:00 to 16:00: 0.33 reports on an average day
- 16:00 to 17:00: 0.46 reports on an average day
- 17:00 to 18:00: 0.34 reports on an average day
- 18:00 to 19:00: 0.17 reports on an average day
- 19:00 to 20:00: 0.17 reports on an average day
- 20:00 to 21:00: 0.14 reports on an average day
- 21:00 to 22:00: 0.1 reports on an average day
- 22:00 to 23:00: 0.04 reports on an average day
- 23:00 to 00:00: 0.09 reports on an average day
By day of the week
- Monday: 0 reports on an average Monday
- Tuesday: 0 reports on an average Tuesday
- Wednesday: 34 reports on an average Wednesday
- Thursday: 0.79 reports on an average Thursday
- Friday: 0 reports on an average Friday
- Saturday: 0 reports on an average Saturday
- Sunday: 0 reports on an average Sunday
Each bar is the average number of user reports in that hour, or on that day of the week, from 22 days of reports since 5 October 2026. The busiest bar is highlighted. Spikes in reports are left out, so one outage does not set the pattern.
What happens when CityFibre goes down
CityFibre runs a UK full fibre network that partner internet providers use to sell broadband to homes and businesses. When its network falters, you lose the connection your work call, streaming, gaming, or home security depends on.
On a CityFibre connection, the first sign is a page that will not load and a video call that freezes; streaming buffers, downloads stall, and smart cameras or alarms drop off the network. Your device can show a strong Wi-Fi signal with no internet behind it. Problems can be street-level or spread across a town, and a routing fault at a partner ISP can hit only some addresses while neighbours stay online. The status at the top uses problem reports in 15-minute windows over 24 hours; it does not ping or probe the network, so treat the report count as a signal and not a full diagnosis.
CityFibre IP address, servers and network
Checking cityfibre.com from our server…
CityFibre FAQ
Is CityFibre down right now?
Why does my CityFibre ONT show a red LOS light?
Can I use my own router with a CityFibre connection?
Do I pay CityFibre directly for my broadband?
Why does my CityFibre router show 'No Internet' when the ONT lights are green?
Service updates from @CityFibre
No posts about problems from @CityFibre in the last 14 days. The latest is from .
Put the CityFibre status badge on your site
Paste one of these into a web page, a blog post or a README. The badge shows the same status as this page, based on user problem reports. Browsers can keep a copy for up to 4 hours. It links back here.
<a href="https://isitdownrightnow.app/services/cityfibre/"><img src="https://isitdownrightnow.app/badge/cityfibre.svg" alt="CityFibre status" height="20"></a>[](https://isitdownrightnow.app/services/cityfibre/)The badge is a plain image: no scripts, no cookies. People who see it on your page load it from our server.
How we track CityFibre
The status on this page comes from user-submitted problem reports for CityFibre, counted in 15-minute windows over the last 24 hours. Each window is compared with the normal level for CityFibre, so a few complaints on a quiet day don't trigger anything, but a sudden jump well above normal does.
When reports climb well above normal, the status here changes to partial outage or major outage and the chart moves with it. CityFibre doesn't publish a public status page that we know of, so user reports are often the quickest sign that something is wrong on their side.