Ofcom data · 1,076 postcodes

CM23 broadband coverage — East Hertfordshire

Full-fibre, gigabit and superfast broadband availability across the CM23 postcode district, plus business broadband and leased-line options for East Hertfordshire.

Strong coverage

Superfast (30Mb+)

95.2%

Ultrafast (300Mb+)

75.5%

Gigabit-capable

72.2%

Below USO (10Mb)

0.1%

Check broadband at your exact CM23 postcode

District figures are an average — get the precise availability, full-fibre status and mobile signal for your address.

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Broadband in CM23

Broadband availability in the CM23 postcode district (East Hertfordshire) is Strong — superfast is near-universal and gigabit is rolling out. Across the 1,076 postcodes Ofcom measures in CM23, superfast broadband (30 Mbit/s or faster) reaches 95.2% of premises and gigabit-capable lines are available to 72.2%.

Around 0.1% of premises in CM23 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in CM23

Postcode	Superfast	Gigabit
CM23 1AA	0%	0%
CM23 1AB	28.6%	28.6%
CM23 1AD	66.7%	66.7%
CM23 1AE	100%	77.8%
CM23 1AG	100%	100%
CM23 1AH	100%	100%
CM23 1AJ	100%	100%
CM23 1AL	100%	100%
CM23 1AN	100%	92.3%
CM23 1AP	100%	100%

Business broadband & leased lines in East Hertfordshire

Whether the CM23 district has full fibre yet or not, we can connect your business. Where FTTP and gigabit are live we quote ultrafast full-fibre; where they aren't, a leased line still delivers guaranteed, symmetric speeds with an SLA. We also handle mobile coverage and VoIP for the same site.

Get a business broadband quote for CM23

Free, no obligation — full fibre, leased line or FTTC, matched to what's actually available at your postcode.

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Nearby CM districts

CM3 — 63.5% gigabit CM1 — 79.8% gigabit CM2 — 85.4% gigabit CM7 — 86.8% gigabit CM9 — 81.8% gigabit CM6 — 79% gigabit CM8 — 79.9% gigabit CM13 — 77.3% gigabit CM16 — 79.9% gigabit CM15 — 76.1% gigabit

See all Chelmsford (CM) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the CM23 area (East Hertfordshire)?

In the CM23 area (East Hertfordshire), superfast broadband (30 Mbit/s+) is available to approximately 95.2% of premises and gigabit-capable broadband to around 72.2%, based on Ofcom Connected Nations data. Exact availability varies by postcode — enter your full postcode in our checker for a precise result.

Can I get full-fibre or gigabit broadband in the CM23 area (East Hertfordshire)?

Gigabit-capable coverage in the CM23 area (East Hertfordshire) stands at about 72.2% of premises. Where gigabit and full-fibre (FTTP) are live, businesses can order symmetric, low-latency connections — ideal for cloud, VoIP and multi-site working. If full fibre hasn't reached your premises yet, a leased line can still deliver guaranteed gigabit speeds.

How do I check broadband at my exact address in the CM23 area (East Hertfordshire)?

Use the free broadband postcode checker on this page: enter your postcode to see fixed-broadband availability, gigabit/full-fibre coverage and mobile signal for all four networks at that location, sourced from official Ofcom data.

Who provides business broadband in the CM23 area (East Hertfordshire)?

Most UK providers serve the CM23 area (East Hertfordshire) over the Openreach and (where present) CityFibre or Virgin Media networks. Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines across the area — request a quote to compare options for your postcode.

Broadband availability data © 2026 Ofcom (Connected Nations), licensed under the Open Government Licence v3.0. Figures are area averages and predictions; availability at an individual address may differ — always confirm with a postcode-level check.