CF23 · Cardiff

CF23 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 873 postcodes across 5 sectors in Cardiff.

Full fibre

Gigabit

89%

Superfast

98%

Postcodes

873

Cardiff's CF23 sector combines 89.7% ultrafast with 43.4% fixed wireless across 873 postcodes, supporting strong urban broadband with wireless overlay.

Broadband speeds in CF23

Share of CF23 premises by the fastest download speed available, averaged across all 873 postcodes in the district.

Gigabit availability sits at 88.5% across the 873-postcode sector, with ultrafast penetration at 89.7%, representing premium performance for outer Cardiff. Wireless is present in 43.4% of postcodes, providing network diversity and redundancy for most households. Below-10Mbps premises are minimal at 1.1%, making slow broadband largely absent. Superfast reaches 98.4%, ensuring reliable baseline speeds across essentially all postcodes. The speed distribution is favourable: 89.7% achieve ultrafast speeds, 8.7% occupy the 30 to 300 Mbps band, barely 1.1% fall below 10 Mbps. This profile shows CF23 matching central Cardiff zones in gigabit deployment whilst providing complementary wireless options for network resilience.

Under 2 Mbps

<1%

2 to 5 Mbps

<1%

5 to 10 Mbps

<1%

10 to 30 Mbps

<1%

30 to 300 Mbps

300 Mbps and above

90%

Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.

Connectivity in detail

Below 10 Mbps USO

Premises unable to get the 10 Mbps universal service minimum

Fixed wireless

43%

Premises that can use a fixed wireless access service

Broadband by sector

CF23 splits into 5 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.

Sector	Postcodes	Superfast	Full fibre	Gigabit
CF23 5	215	100%	0%	97%
CF23 6	225	100%	0%	88%
CF23 7	98	100%	0%	93%
CF23 8	141	94%	0%	88%
CF23 9	194	98%	0%	79%

All CF23 5 postcodes (215)

CF23 5AA CF23 5AB CF23 5AD CF23 5AE CF23 5AF CF23 5AG CF23 5AH CF23 5AJ CF23 5AL CF23 5AN CF23 5AP CF23 5AQ CF23 5AR CF23 5AS CF23 5AT CF23 5AU CF23 5AW CF23 5AX CF23 5AY CF23 5AZ CF23 5BA CF23 5BB CF23 5BD CF23 5BE CF23 5BF CF23 5BG CF23 5BH CF23 5BJ CF23 5BL CF23 5BN CF23 5BP CF23 5BQ CF23 5BR CF23 5BS CF23 5BT CF23 5BU CF23 5BW CF23 5BX CF23 5BY CF23 5BZ CF23 5DA CF23 5DD CF23 5DE CF23 5DF CF23 5DG CF23 5DH CF23 5DJ CF23 5DL CF23 5DN CF23 5DP CF23 5DQ CF23 5DR CF23 5DS CF23 5DT CF23 5DU CF23 5DW CF23 5DX CF23 5DY CF23 5DZ CF23 5EA CF23 5EB CF23 5ED CF23 5EE CF23 5EF CF23 5EG CF23 5EH CF23 5EJ CF23 5EL CF23 5EN CF23 5EP CF23 5EQ CF23 5ER CF23 5ES CF23 5ET CF23 5EU CF23 5EW CF23 5EX CF23 5EZ CF23 5FA CF23 5FB CF23 5GA CF23 5HA CF23 5HB CF23 5HD CF23 5HE CF23 5HF CF23 5HG CF23 5HH CF23 5HJ CF23 5HL CF23 5HN CF23 5HP CF23 5HQ CF23 5HR CF23 5HS CF23 5HT CF23 5HU CF23 5HW CF23 5HX CF23 5HY CF23 5HZ CF23 5JA CF23 5JB CF23 5JD CF23 5JE CF23 5JF CF23 5JG CF23 5JH CF23 5JJ CF23 5JL CF23 5JN CF23 5JP CF23 5JQ CF23 5JR CF23 5JS CF23 5JT CF23 5JU CF23 5JW CF23 5JX CF23 5JY CF23 5JZ CF23 5LA CF23 5LB CF23 5LD CF23 5LE CF23 5LF CF23 5LG CF23 5LH CF23 5LJ CF23 5LL CF23 5LN CF23 5LP CF23 5LQ CF23 5LR CF23 5LS CF23 5LT CF23 5LU CF23 5LW CF23 5LX CF23 5LY CF23 5LZ CF23 5NA CF23 5NB CF23 5ND CF23 5NE CF23 5NF CF23 5NG CF23 5NJ CF23 5NN CF23 5NP CF23 5NQ CF23 5NR CF23 5NS CF23 5NT CF23 5NU CF23 5NW CF23 5NX CF23 5NY CF23 5NZ CF23 5PA CF23 5PB CF23 5PD CF23 5PG CF23 5PH CF23 5PJ CF23 5PL CF23 5PN CF23 5PP CF23 5PQ CF23 5PR CF23 5PS CF23 5PT CF23 5PU CF23 5PW CF23 5PX CF23 5QA CF23 5QB CF23 5QD CF23 5QE CF23 5QF CF23 5QG CF23 5QH CF23 5QJ CF23 5QL CF23 5QN CF23 5QP CF23 5QQ CF23 5QR CF23 5QS CF23 5QT CF23 5QU CF23 5QW CF23 5QX CF23 5QY CF23 5QZ CF23 5RA CF23 5RB CF23 5RD CF23 5RE CF23 5RF CF23 5RH CF23 5RL CF23 5SA CF23 5SB CF23 5SD CF23 5SE CF23 5SG CF23 5SH CF23 5SJ CF23 5SL CF23 5SY CF23 5WS CF23 5YA CF23 5YB CF23 5YG

All CF23 6 postcodes (225)

CF23 6AD CF23 6AE CF23 6AF CF23 6AG CF23 6AH CF23 6AJ CF23 6AL CF23 6AN CF23 6AP CF23 6AQ CF23 6AR CF23 6AS CF23 6AT CF23 6AU CF23 6AW CF23 6AX CF23 6AY CF23 6BL CF23 6BN CF23 6BP CF23 6BQ CF23 6BR CF23 6BS CF23 6BT CF23 6BU CF23 6DD CF23 6DE CF23 6DF CF23 6DG CF23 6DH CF23 6DJ CF23 6DL CF23 6DN CF23 6DP CF23 6DQ CF23 6DR CF23 6DS CF23 6DT CF23 6DU CF23 6DW CF23 6DZ CF23 6EA CF23 6EB CF23 6ED CF23 6EE CF23 6EF CF23 6EG CF23 6EH CF23 6EJ CF23 6EL CF23 6EN CF23 6EP CF23 6EQ CF23 6ER CF23 6ES CF23 6ET CF23 6EU CF23 6EW CF23 6EX CF23 6EY CF23 6EZ CF23 6FH CF23 6HA CF23 6HB CF23 6HD CF23 6HE CF23 6HF CF23 6HG CF23 6HH CF23 6HJ CF23 6HL CF23 6HN CF23 6HP CF23 6HQ CF23 6HR CF23 6HS CF23 6HT CF23 6JA CF23 6JB CF23 6JD CF23 6JE CF23 6JF CF23 6JG CF23 6JH CF23 6JJ CF23 6JL CF23 6JN CF23 6JP CF23 6JQ CF23 6JR CF23 6JS CF23 6JT CF23 6JU CF23 6JW CF23 6JX CF23 6JY CF23 6LE CF23 6LF CF23 6LG CF23 6LH CF23 6LJ CF23 6LL CF23 6LN CF23 6LP CF23 6LQ CF23 6LR CF23 6LS CF23 6LT CF23 6LU CF23 6NA CF23 6NB CF23 6ND CF23 6NE CF23 6NF CF23 6NG CF23 6NH CF23 6NJ CF23 6NL CF23 6NN CF23 6NP CF23 6NQ CF23 6NX CF23 6NY CF23 6NZ CF23 6PA CF23 6PB CF23 6PD CF23 6PE CF23 6PF CF23 6PG CF23 6PH CF23 6PJ CF23 6PL CF23 6PN CF23 6PP CF23 6PQ CF23 6PR CF23 6PS CF23 6PT CF23 6PU CF23 6PW CF23 6PX CF23 6PY CF23 6PZ CF23 6QA CF23 6QB CF23 6QD CF23 6QE CF23 6QN CF23 6QP CF23 6QQ CF23 6QR CF23 6QS CF23 6QT CF23 6QU CF23 6QW CF23 6QX CF23 6QY CF23 6QZ CF23 6RA CF23 6RB CF23 6RD CF23 6RE CF23 6RF CF23 6RG CF23 6RH CF23 6RQ CF23 6RR CF23 6RS CF23 6RT CF23 6RU CF23 6RW CF23 6RX CF23 6RY CF23 6RZ CF23 6SA CF23 6SB CF23 6SD CF23 6SE CF23 6SF CF23 6SG CF23 6SH CF23 6SJ CF23 6SL CF23 6SN CF23 6SP CF23 6SQ CF23 6SR CF23 6SS CF23 6ST CF23 6SU CF23 6SW CF23 6SX CF23 6SY CF23 6SZ CF23 6TA CF23 6TB CF23 6TD CF23 6TE CF23 6TF CF23 6TG CF23 6TH CF23 6TJ CF23 6TZ CF23 6UA CF23 6UB CF23 6UD CF23 6UE CF23 6UF CF23 6UG CF23 6UH CF23 6UJ CF23 6UL CF23 6UN CF23 6UP CF23 6UQ CF23 6UR CF23 6US CF23 6UT CF23 6UU CF23 6UW CF23 6WG CF23 6XD CF23 6XH CF23 6XL

All CF23 7 postcodes (98)

All CF23 8 postcodes (141)

CF23 8AA CF23 8AB CF23 8AH CF23 8AJ CF23 8AL CF23 8AN CF23 8AS CF23 8AT CF23 8AU CF23 8AW CF23 8AX CF23 8AY CF23 8AZ CF23 8BA CF23 8BB CF23 8BX CF23 8BY CF23 8BZ CF23 8EP CF23 8EQ CF23 8ET CF23 8FD CF23 8FE CF23 8FF CF23 8FG CF23 8FJ CF23 8FN CF23 8FP CF23 8FR CF23 8FX CF23 8GL CF23 8GW CF23 8HA CF23 8HB CF23 8HD CF23 8HE CF23 8HJ CF23 8HW CF23 8LA CF23 8LB CF23 8LD CF23 8LE CF23 8LF CF23 8LG CF23 8LH CF23 8LJ CF23 8LL CF23 8LN CF23 8LP CF23 8LQ CF23 8LR CF23 8LS CF23 8LT CF23 8LU CF23 8LW CF23 8LX CF23 8LY CF23 8LZ CF23 8NA CF23 8NB CF23 8ND CF23 8NE CF23 8NF CF23 8NG CF23 8NH CF23 8NJ CF23 8NL CF23 8NN CF23 8NP CF23 8NQ CF23 8NR CF23 8NS CF23 8NT CF23 8NU CF23 8NW CF23 8NX CF23 8NY CF23 8NZ CF23 8PA CF23 8PB CF23 8PD CF23 8PE CF23 8PF CF23 8PG CF23 8PH CF23 8PJ CF23 8PL CF23 8PN CF23 8PP CF23 8PQ CF23 8PR CF23 8PS CF23 8PT CF23 8PU CF23 8PW CF23 8PX CF23 8PY CF23 8PZ CF23 8QA CF23 8QB CF23 8QD CF23 8QE CF23 8QF CF23 8QG CF23 8RA CF23 8RB CF23 8RD CF23 8RE CF23 8RF CF23 8RG CF23 8RH CF23 8RJ CF23 8RN CF23 8RP CF23 8RQ CF23 8RR CF23 8RS CF23 8RT CF23 8RU CF23 8RW CF23 8RX CF23 8SA CF23 8SB CF23 8SD CF23 8SE CF23 8SF CF23 8SG CF23 8SH CF23 8SJ CF23 8SL CF23 8SN CF23 8SP CF23 8SQ CF23 8XA CF23 8XE CF23 8XG CF23 8XH CF23 8XJ CF23 8XL CF23 8XQ CF23 8XR

All CF23 9 postcodes (194)

CF23 9AA CF23 9AB CF23 9AD CF23 9AE CF23 9AF CF23 9AG CF23 9AH CF23 9AJ CF23 9AL CF23 9AN CF23 9AP CF23 9AQ CF23 9AR CF23 9AS CF23 9AT CF23 9AU CF23 9AW CF23 9AX CF23 9AY CF23 9AZ CF23 9BA CF23 9BB CF23 9BD CF23 9BE CF23 9BF CF23 9BG CF23 9BH CF23 9BJ CF23 9BL CF23 9BN CF23 9BP CF23 9BQ CF23 9BR CF23 9BS CF23 9BT CF23 9BU CF23 9BW CF23 9BX CF23 9BY CF23 9BZ CF23 9DA CF23 9DB CF23 9DD CF23 9DE CF23 9DF CF23 9DG CF23 9DH CF23 9DJ CF23 9DL CF23 9DN CF23 9DP CF23 9DQ CF23 9DR CF23 9DS CF23 9DT CF23 9DU CF23 9DW CF23 9DX CF23 9DY CF23 9DZ CF23 9EA CF23 9ED CF23 9EE CF23 9EF CF23 9EG CF23 9EH CF23 9EJ CF23 9EL CF23 9EN CF23 9EP CF23 9EQ CF23 9ER CF23 9ES CF23 9ET CF23 9EU CF23 9EW CF23 9EX CF23 9EY CF23 9EZ CF23 9FA CF23 9FB CF23 9FD CF23 9FE CF23 9FF CF23 9FG CF23 9FH CF23 9FJ CF23 9FL CF23 9FN CF23 9FP CF23 9FQ CF23 9HA CF23 9HB CF23 9HD CF23 9HE CF23 9HF CF23 9HG CF23 9HH CF23 9HJ CF23 9HL CF23 9HS CF23 9HT CF23 9HU CF23 9HW CF23 9HX CF23 9HY CF23 9HZ CF23 9JA CF23 9JB CF23 9JD CF23 9JE CF23 9JF CF23 9JG CF23 9JH CF23 9JJ CF23 9JN CF23 9JP CF23 9JQ CF23 9JR CF23 9JS CF23 9JT CF23 9JU CF23 9JW CF23 9JX CF23 9JY CF23 9JZ CF23 9LD CF23 9LE CF23 9LF CF23 9LG CF23 9LH CF23 9LJ CF23 9LL CF23 9LN CF23 9LP CF23 9LQ CF23 9LR CF23 9LS CF23 9LT CF23 9LU CF23 9LW CF23 9LX CF23 9LY CF23 9LZ CF23 9NA CF23 9NB CF23 9ND CF23 9NE CF23 9NF CF23 9NG CF23 9NH CF23 9NJ CF23 9NL CF23 9NN CF23 9NP CF23 9NQ CF23 9NR CF23 9NS CF23 9NT CF23 9NU CF23 9NW CF23 9NX CF23 9NY CF23 9NZ CF23 9PA CF23 9PB CF23 9PD CF23 9PF CF23 9PG CF23 9PH CF23 9PJ CF23 9PL CF23 9PN CF23 9PP CF23 9PQ CF23 9PR CF23 9PS CF23 9PT CF23 9PU CF23 9PW CF23 9PX CF23 9PY CF23 9PZ CF23 9QA CF23 9QB CF23 9UE CF23 9UL CF23 9UP CF23 9UT CF23 9UU CF23 9UW CF23 9XE CF23 9XF CF23 9XN

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Living in Cardiff

CF23 covers the outer Cardiff sprawl with reliable infrastructure. Price and housing data for this sector is not available, but broadband consistency is assured.

Remote worker score

55/100

Connectivity and amenities for home working

Family score

50/100

Schools, safety and family amenities

Value score

50/100

What you get for the local price level

CF23 broadband FAQs

Is CF23 as well-connected as central Cardiff?

Near-identical. 88.5% gigabit and 89.7% ultrafast match CF11, showing consistent infrastructure across Cardiff.

How common is fixed wireless in CF23?

43.4% of postcodes have access to wireless. It provides backup or primary access when wired services are unavailable.

Will I encounter slow broadband here?

Unlikely. Only 1.1% fall below 10 Mbps. Superfast speeds are the baseline expectation.

Should businesses prioritise CF23 over other Cardiff postcodes?

Not particularly. CF23 matches CF11 and CF14 in gigabit reach. Choose based on location, not broadband.

Neighbouring districts

CF24

1,021 postcodes

98% superfast

CF3

915 postcodes

99% superfast

CF14

1,598 postcodes

99% superfast

CF10

566 postcodes

81% superfast

CF11

777 postcodes

99% superfast

CF99

1 postcodes

0% superfast

Check your exact postcode

Every postcode in CF23 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.

Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources