Broadband availability
Broadband in Cilfynydd
Showing results for postcode CF37 4HU.
Compare Broadband Deals in Cilfynydd
Broadband Types Available in Cilfynydd
| Type | Status | Download | Upload |
|---|---|---|---|
| Standard Broadband | Not available | — | — |
| Superfast Broadband | Available | 36 Mbps | 20 Mbps |
| Ultrafast / Full Fibre | Available | 900 Mbps | 900 Mbps |
| Mobile Broadband | Available | N/A | N/A |
Best option in Cilfynydd
Full fibre (FTTP) is available in Cilfynydd, with typical download speeds of around 883 Mbps. This is the fastest and most reliable type of home broadband connection.
Broadband Providers in Cilfynydd
Customer ratings sourced from Trustpilot. Checked 18 June 2026.
Postcodes in Cilfynydd
Nearby Areas
About Broadband in Cilfynydd
Cilfynydd is in Caerphilly. Full fibre broadband is available here, with typical download speeds of around 883 Mbps, well above the UK average of 69 Mbps. Most major providers cover the area, so there is a reasonable amount of competition on price.
Standard broadband runs over the copper phone network. Speeds depend on your distance from the telephone exchange and typically range from around 5 Mbps to 20 Mbps.
Superfast broadband (FTTC) uses a fibre optic cable to your street cabinet, then copper for the final stretch to your home. Most urban and suburban areas can get speeds of 35 to 80 Mbps.
Full fibre (FTTP) runs fibre optic cable all the way into your home. It is the fastest and most reliable option available, with speeds from 100 Mbps upwards.
What's Happening with Broadband in Cilfynydd?
Cilfynydd sits in the Rhondda Cynon Taf valley, just north of Pontypridd, and the area has benefited from Openreach's sustained full fibre rollout across South Wales. Full fibre (FTTP) coverage in Wales now exceeds 81%, reaching more than 1.25 million premises, putting Cilfynydd broadly in line with or slightly above that regional figure. By comparison, the UK national average for full fibre coverage stood at around 82% in Spring 2026, with gigabit-capable broadband reaching approximately 89% of premises nationally.
No specific Openreach rollout announcements for Cilfynydd have been published at the time of writing. The area is served by Openreach's wholesale network, meaning residents can access full fibre packages through a wide range of retail ISPs including BT, Sky, Plusnet, and EE, with typical speeds around 883 Mbps on a gigabit-capable line. Take-up of full fibre in Wales is running at roughly 50% of eligible premises, notably ahead of the UK average of 38%, which suggests strong local appetite for upgrading.
For residents who want an alternative to Openreach, Ogi is the most relevant altnet for this part of Wales, operating its own full fibre network across South and West Wales. TFW Fibre is also active in the Cardiff and Valleys region, which covers communities close to Cilfynydd. Availability of these networks at a specific address varies, so it is worth checking directly.
One date all Cilfynydd households should be aware of: Openreach is retiring the old copper PSTN phone network in January 2027. Anyone still on a traditional copper phone line will need to switch to a digital voice service before then. Upgrading to full fibre broadband now resolves this automatically.
Enter your postcode in the checker above to see which full fibre providers are available at your address in Cilfynydd today.