CM23 · East Hertfordshire

CM23 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 1,097 postcodes across 6 sectors in East Hertfordshire.

Full fibre

Gigabit

81%

Superfast

97%

Postcodes

1,097

CM23 covers 1,097 postcodes in East Hertfordshire, the second-largest in this batch. Gigabit reaches 80.9%, with zero below-USO coverage.

Broadband speeds in CM23

Share of CM23 premises by the fastest download speed available, averaged across all 1,097 postcodes in the district.

Superfast spans 97% of premises. Gigabit availability at 80.9% represents strong cable penetration across a large residential zone. Ultrafast is recorded at 83.3%, indicating 2.4% on fibre-to-the-cabinet without gigabit. Speed distribution shows 83.3% at 300 Mbps and above, with 13.8% on 30-300 Mbps. Below-USO coverage is zero. Only 0.6% sit below 10 Mbps. At nearly 1,100 postcodes, CM23 demonstrates how cable gigabit can scale across major suburban populations. Cable infrastructure dominates, with a small wireless component at 0% indicating complete wired coverage.

Under 2 Mbps

<1%

2 to 5 Mbps

5 to 10 Mbps

<1%

10 to 30 Mbps

30 to 300 Mbps

14%

300 Mbps and above

83%

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

Premises that can use a fixed wireless access service

Broadband by sector

CM23 splits into 6 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
CM23 0	5	96%	0%	76%
CM23 1	122	84%	0%	76%
CM23 2	291	99%	0%	80%
CM23 3	262	100%	0%	85%
CM23 4	215	98%	0%	86%
CM23 5	202	97%	0%	74%

All CM23 0 postcodes (5)

CM23 0AA CM23 0AH CM23 0AL CM23 0BB CM23 0BQ

All CM23 1 postcodes (122)

CM23 1AA CM23 1AB CM23 1AD CM23 1AE CM23 1AG CM23 1AH CM23 1AJ CM23 1AL CM23 1AN CM23 1AP CM23 1AR CM23 1AS CM23 1AT CM23 1AU CM23 1AW CM23 1AX CM23 1AY CM23 1AZ CM23 1BA CM23 1BB CM23 1BD CM23 1BE CM23 1BG CM23 1BJ CM23 1BL CM23 1BN CM23 1BP CM23 1BQ CM23 1BT CM23 1BW CM23 1BX CM23 1BZ CM23 1DA CM23 1DB CM23 1DD CM23 1DE CM23 1DF CM23 1DG CM23 1DH CM23 1DJ CM23 1DL CM23 1DN CM23 1DP CM23 1DQ CM23 1DR CM23 1DS CM23 1DT CM23 1DU CM23 1DW CM23 1DX CM23 1DY CM23 1DZ CM23 1EA CM23 1EF CM23 1EG CM23 1EH CM23 1EJ CM23 1EL CM23 1EN CM23 1EP CM23 1EQ CM23 1ER CM23 1ES CM23 1ET CM23 1EU CM23 1EW CM23 1EX CM23 1EY CM23 1EZ CM23 1FA CM23 1FB CM23 1FD CM23 1FE CM23 1FF CM23 1FG CM23 1FH CM23 1FJ CM23 1FL CM23 1FN CM23 1FP CM23 1FQ CM23 1FR CM23 1FS CM23 1FT CM23 1FU CM23 1FW CM23 1FX CM23 1FY CM23 1FZ CM23 1GA CM23 1GB CM23 1GD CM23 1GE CM23 1GF CM23 1GS CM23 1HA CM23 1HB CM23 1HD CM23 1HE CM23 1HG CM23 1HH CM23 1HJ CM23 1HL CM23 1HN CM23 1HP CM23 1HQ CM23 1HR CM23 1HS CM23 1HT CM23 1HU CM23 1HW CM23 1HX CM23 1HY CM23 1HZ CM23 1JA CM23 1JB CM23 1JF CM23 1JG CM23 1JH CM23 1JJ CM23 1JL CM23 1JR

All CM23 2 postcodes (291)

CM23 2AA CM23 2AB CM23 2AD CM23 2AE CM23 2AG CM23 2AH CM23 2AJ CM23 2AL CM23 2AP CM23 2AR CM23 2AS CM23 2AT CM23 2AU CM23 2AX CM23 2AY CM23 2AZ CM23 2BA CM23 2BB CM23 2BD CM23 2BG CM23 2BH CM23 2BJ CM23 2BL CM23 2BN CM23 2BP CM23 2BQ CM23 2BS CM23 2BT CM23 2BU CM23 2BW CM23 2BX CM23 2BY CM23 2BZ CM23 2DA CM23 2DB CM23 2DD CM23 2DE CM23 2DF CM23 2DG CM23 2DH CM23 2DL CM23 2DN CM23 2DP CM23 2DR CM23 2DS CM23 2DT CM23 2DU CM23 2DW CM23 2DX CM23 2DY CM23 2DZ CM23 2EA CM23 2EB CM23 2ED CM23 2EF CM23 2EG CM23 2EJ CM23 2EL CM23 2EQ CM23 2ES CM23 2ET CM23 2EU CM23 2EX CM23 2EY CM23 2FG CM23 2FH CM23 2FJ CM23 2FL CM23 2FN CM23 2FP CM23 2FQ CM23 2FR CM23 2FS CM23 2FT CM23 2FU CM23 2FW CM23 2FX CM23 2GA CM23 2GE CM23 2GF CM23 2GG CM23 2GH CM23 2GL CM23 2GN CM23 2GP CM23 2GQ CM23 2GR CM23 2GS CM23 2GT CM23 2GU CM23 2GZ CM23 2HA CM23 2HB CM23 2HD CM23 2HE CM23 2HF CM23 2HG CM23 2HH CM23 2HJ CM23 2HL CM23 2HN CM23 2HP CM23 2HR CM23 2HS CM23 2HT CM23 2HU CM23 2HX CM23 2HY CM23 2HZ CM23 2JA CM23 2JB CM23 2JD CM23 2JH CM23 2JJ CM23 2JL CM23 2JN CM23 2JP CM23 2JR CM23 2JT CM23 2JU CM23 2JW CM23 2JY CM23 2JZ CM23 2LD CM23 2LE CM23 2LN CM23 2LP CM23 2LQ CM23 2LR CM23 2LS CM23 2LT CM23 2LW CM23 2LX CM23 2LY CM23 2NA CM23 2NB CM23 2ND CM23 2NE CM23 2NF CM23 2NG CM23 2NH CM23 2NJ CM23 2NL CM23 2NN CM23 2NP CM23 2NQ CM23 2NR CM23 2NT CM23 2NU CM23 2NW CM23 2NX CM23 2NY CM23 2NZ CM23 2PA CM23 2PB CM23 2PD CM23 2PE CM23 2PF CM23 2PG CM23 2PJ CM23 2PL CM23 2PN CM23 2PP CM23 2PQ CM23 2PR CM23 2PS CM23 2PT CM23 2PU CM23 2PW CM23 2PX CM23 2PY CM23 2QA CM23 2QD CM23 2QE CM23 2QF CM23 2QG CM23 2QH CM23 2QJ CM23 2QL CM23 2QN CM23 2QP CM23 2QQ CM23 2QR CM23 2QS CM23 2QT CM23 2QU CM23 2QX CM23 2QY CM23 2RA CM23 2RB CM23 2RD CM23 2RE CM23 2RF CM23 2RG CM23 2RH CM23 2RJ CM23 2RL CM23 2RN CM23 2RP CM23 2RR CM23 2RS CM23 2RT CM23 2RU CM23 2RW CM23 2RY CM23 2SA CM23 2SB CM23 2SD CM23 2SE CM23 2SF CM23 2SG CM23 2SH CM23 2SJ CM23 2SL CM23 2SN CM23 2SP CM23 2SQ CM23 2SR CM23 2SS CM23 2ST CM23 2SU CM23 2SX CM23 2SY CM23 2SZ CM23 2TA CM23 2TB CM23 2TD CM23 2TE CM23 2TF CM23 2TG CM23 2TH CM23 2TN CM23 2TT CM23 2TU CM23 2TW CM23 2TX CM23 2UG CM23 2UJ CM23 2US CM23 2UT CM23 2UU CM23 2UW CM23 2UX CM23 2UY CM23 2UZ CM23 2WH CM23 2WJ CM23 2WL CM23 2WN CM23 2WP CM23 2XD CM23 2XE CM23 2XF CM23 2XG CM23 2XH CM23 2XJ CM23 2XL CM23 2XN CM23 2XP CM23 2XQ CM23 2XR CM23 2XS CM23 2XU CM23 2XW CM23 2XX CM23 2YD CM23 2YE CM23 2YF CM23 2YG CM23 2YH CM23 2YJ CM23 2YL CM23 2YN CM23 2YP CM23 2YR CM23 2YS CM23 2YU CM23 2ZA CM23 2ZB CM23 2ZE CM23 2ZF CM23 2ZG CM23 2ZH CM23 2ZJ CM23 2ZL CM23 2ZN CM23 2ZR CM23 2ZS CM23 2ZT CM23 2ZU CM23 2ZY

All CM23 3 postcodes (262)

CM23 3AA CM23 3AB CM23 3AD CM23 3AE CM23 3AG CM23 3AJ CM23 3AL CM23 3AP CM23 3AR CM23 3AS CM23 3AT CM23 3AW CM23 3AX CM23 3AY CM23 3AZ CM23 3BA CM23 3BD CM23 3BE CM23 3BG CM23 3BJ CM23 3BL CM23 3BN CM23 3BP CM23 3BQ CM23 3BS CM23 3BT CM23 3BX CM23 3BY CM23 3DA CM23 3DD CM23 3DE CM23 3DH CM23 3DP CM23 3DQ CM23 3DR CM23 3DS CM23 3DW CM23 3DX CM23 3DY CM23 3EB CM23 3EE CM23 3EG CM23 3EH CM23 3EJ CM23 3EL CM23 3EN CM23 3EP CM23 3ER CM23 3ES CM23 3ET CM23 3EU CM23 3EX CM23 3EY CM23 3EZ CM23 3FD CM23 3FE CM23 3FL CM23 3FN CM23 3FP CM23 3FQ CM23 3FR CM23 3FS CM23 3FT CM23 3FU CM23 3FW CM23 3FX CM23 3GA CM23 3GB CM23 3GD CM23 3GE CM23 3GF CM23 3GG CM23 3GH CM23 3GJ CM23 3GL CM23 3GN CM23 3GP CM23 3GQ CM23 3GR CM23 3GT CM23 3GW CM23 3GX CM23 3GY CM23 3HA CM23 3HB CM23 3HD CM23 3HE CM23 3HF CM23 3HG CM23 3HJ CM23 3HL CM23 3HN CM23 3HP CM23 3HR CM23 3HS CM23 3HT CM23 3HU CM23 3HX CM23 3HZ CM23 3JA CM23 3JB CM23 3JD CM23 3JE CM23 3JG CM23 3JH CM23 3JJ CM23 3JL CM23 3JN CM23 3JP CM23 3JQ CM23 3JR CM23 3JS CM23 3JT CM23 3JU CM23 3JW CM23 3JX CM23 3JY CM23 3JZ CM23 3LA CM23 3LE CM23 3LH CM23 3LJ CM23 3LL CM23 3LN CM23 3LQ CM23 3LR CM23 3LS CM23 3LU CM23 3LY CM23 3LZ CM23 3NA CM23 3NB CM23 3ND CM23 3NE CM23 3NF CM23 3NG CM23 3NH CM23 3NJ CM23 3NL CM23 3NN CM23 3NP CM23 3NQ CM23 3NR CM23 3NS CM23 3NT CM23 3NX CM23 3PA CM23 3PB CM23 3PD CM23 3PE CM23 3PF CM23 3PH CM23 3PJ CM23 3PL CM23 3PN CM23 3PP CM23 3PQ CM23 3PR CM23 3PS CM23 3PT CM23 3PU CM23 3PW CM23 3PX CM23 3PY CM23 3QA CM23 3QB CM23 3QD CM23 3QE CM23 3QF CM23 3QG CM23 3QH CM23 3QJ CM23 3QL CM23 3QN CM23 3QP CM23 3QQ CM23 3QR CM23 3QS CM23 3QT CM23 3QU CM23 3QX CM23 3QY CM23 3QZ CM23 3RA CM23 3RD CM23 3RE CM23 3RG CM23 3RH CM23 3RJ CM23 3RL CM23 3RN CM23 3RP CM23 3RQ CM23 3RR CM23 3RS CM23 3RU CM23 3RW CM23 3RX CM23 3SA CM23 3SB CM23 3SD CM23 3SE CM23 3SF CM23 3SG CM23 3SH CM23 3SJ CM23 3SL CM23 3SN CM23 3SP CM23 3SQ CM23 3SR CM23 3SS CM23 3ST CM23 3SW CM23 3SX CM23 3SY CM23 3TA CM23 3TB CM23 3TE CM23 3TG CM23 3TJ CM23 3TL CM23 3TN CM23 3TP CM23 3TQ CM23 3TR CM23 3TS CM23 3TT CM23 3TU CM23 3TW CM23 3TX CM23 3TY CM23 3UA CM23 3UB CM23 3UD CM23 3UE CM23 3UH CM23 3UJ CM23 3UL CM23 3UP CM23 3US CM23 3UT CM23 3UU CM23 3WA CM23 3WB CM23 3WD CM23 3XB CM23 3XF CM23 3XG CM23 3XH CM23 3XQ CM23 3YJ CM23 3YL CM23 3YN CM23 3YP CM23 3YR CM23 3YS CM23 3YT CM23 3YW CM23 3ZD CM23 3ZF CM23 3ZH

All CM23 4 postcodes (215)

CM23 4AA CM23 4AB CM23 4AD CM23 4AE CM23 4AG CM23 4AJ CM23 4AL CM23 4AN CM23 4AP CM23 4AR CM23 4AS CM23 4AT CM23 4AU CM23 4AW CM23 4AX CM23 4AY CM23 4AZ CM23 4BA CM23 4BB CM23 4BD CM23 4BE CM23 4BG CM23 4BH CM23 4BJ CM23 4BL CM23 4BN CM23 4BP CM23 4BQ CM23 4BS CM23 4BT CM23 4BU CM23 4BW CM23 4BX CM23 4BY CM23 4BZ CM23 4DA CM23 4DB CM23 4DD CM23 4DE CM23 4DF CM23 4DG CM23 4DH CM23 4DJ CM23 4DL CM23 4DN CM23 4DP CM23 4DQ CM23 4DR CM23 4DS CM23 4DT CM23 4DU CM23 4DW CM23 4DX CM23 4DY CM23 4EA CM23 4EB CM23 4ED CM23 4EE CM23 4EF CM23 4EG CM23 4EH CM23 4EJ CM23 4EL CM23 4EN CM23 4EP CM23 4EQ CM23 4ER CM23 4ES CM23 4ET CM23 4EU CM23 4EW CM23 4EX CM23 4EY CM23 4EZ CM23 4FE CM23 4FF CM23 4FG CM23 4FH CM23 4FJ CM23 4FL CM23 4FN CM23 4FP CM23 4FQ CM23 4FR CM23 4FS CM23 4FT CM23 4FW CM23 4FX CM23 4FY CM23 4FZ CM23 4GA CM23 4GB CM23 4GD CM23 4GF CM23 4GG CM23 4GH CM23 4GJ CM23 4GL CM23 4GP CM23 4GR CM23 4GS CM23 4GU CM23 4GZ CM23 4HB CM23 4HD CM23 4HE CM23 4HF CM23 4HG CM23 4HH CM23 4HJ CM23 4HL CM23 4HN CM23 4HP CM23 4HQ CM23 4HR CM23 4HS CM23 4HT CM23 4HU CM23 4HW CM23 4HX CM23 4JB CM23 4JD CM23 4JE CM23 4JF CM23 4JG CM23 4JH CM23 4JJ CM23 4JL CM23 4JN CM23 4JP CM23 4JQ CM23 4JR CM23 4JS CM23 4JT CM23 4JU CM23 4JW CM23 4JX CM23 4JY CM23 4JZ CM23 4LE CM23 4LF CM23 4LH CM23 4LL CM23 4LN CM23 4LT CM23 4LU CM23 4LY CM23 4LZ CM23 4NB CM23 4NE CM23 4NG CM23 4NX CM23 4NZ CM23 4PA CM23 4PB CM23 4PD CM23 4PE CM23 4PF CM23 4PG CM23 4PH CM23 4PJ CM23 4PL CM23 4PP CM23 4PQ CM23 4PR CM23 4PT CM23 4PU CM23 4PW CM23 4PX CM23 4PY CM23 4PZ CM23 4QA CM23 4QE CM23 4QF CM23 4QG CM23 4QN CM23 4QQ CM23 4QS CM23 4QT CM23 4QU CM23 4QW CM23 4QZ CM23 4RB CM23 4RE CM23 4RF CM23 4RG CM23 4RH CM23 4RJ CM23 4RL CM23 4RN CM23 4RP CM23 4RQ CM23 4RR CM23 4RS CM23 4RT CM23 4RU CM23 4RW CM23 4RX CM23 4RY CM23 4RZ CM23 4SA CM23 4SB CM23 4SD CM23 4SF CM23 4SG CM23 4SH CM23 4SX CM23 4SY CM23 4SZ CM23 4TA CM23 4TB CM23 4TH CM23 4TJ CM23 4TQ CM23 4TR

All CM23 5 postcodes (202)

CM23 5AA CM23 5AB CM23 5AD CM23 5AE CM23 5AF CM23 5AG CM23 5AH CM23 5AJ CM23 5AL CM23 5AN CM23 5AP CM23 5AQ CM23 5AR CM23 5AS CM23 5AT CM23 5AZ CM23 5BA CM23 5BB CM23 5BD CM23 5BE CM23 5BG CM23 5BH CM23 5BJ CM23 5BL CM23 5BN CM23 5BP CM23 5BQ CM23 5BS CM23 5BT CM23 5BU CM23 5BX CM23 5BY CM23 5BZ CM23 5DA CM23 5DD CM23 5DE CM23 5DF CM23 5DG CM23 5DH CM23 5DJ CM23 5DL CM23 5DN CM23 5DP CM23 5DQ CM23 5DR CM23 5DS CM23 5DT CM23 5DU CM23 5DW CM23 5DX CM23 5DY CM23 5EA CM23 5EB CM23 5EE CM23 5EF CM23 5EG CM23 5EH CM23 5EJ CM23 5EL CM23 5EN CM23 5EP CM23 5ER CM23 5ES CM23 5ET CM23 5EU CM23 5EX CM23 5EY CM23 5FA CM23 5FD CM23 5FE CM23 5FF CM23 5FG CM23 5FH CM23 5FL CM23 5FP CM23 5FQ CM23 5FR CM23 5FS CM23 5FT CM23 5FU CM23 5GB CM23 5GN CM23 5GP CM23 5GW CM23 5GY CM23 5GZ CM23 5HE CM23 5HF CM23 5HH CM23 5HL CM23 5HN CM23 5HP CM23 5HQ CM23 5HR CM23 5HS CM23 5HT CM23 5HU CM23 5HW CM23 5HX CM23 5HY CM23 5JA CM23 5JB CM23 5JD CM23 5JE CM23 5JF CM23 5JG CM23 5JH CM23 5JJ CM23 5JL CM23 5JN CM23 5JP CM23 5JQ CM23 5JR CM23 5JS CM23 5JT CM23 5JU CM23 5JX CM23 5JY CM23 5JZ CM23 5LA CM23 5LB CM23 5LD CM23 5LE CM23 5LF CM23 5LG CM23 5LH CM23 5LJ CM23 5LL CM23 5LN CM23 5LP CM23 5LQ CM23 5LR CM23 5LS CM23 5LT CM23 5LU CM23 5LW CM23 5LX CM23 5LZ CM23 5NA CM23 5ND CM23 5NF CM23 5NG CM23 5NH CM23 5NJ CM23 5NL CM23 5NN CM23 5NP CM23 5NQ CM23 5NR CM23 5NS CM23 5NT CM23 5NU CM23 5NW CM23 5NX CM23 5NZ CM23 5PA CM23 5PB CM23 5PD CM23 5PE CM23 5PJ CM23 5PN CM23 5PP CM23 5PR CM23 5PS CM23 5PT CM23 5PU CM23 5PW CM23 5PX CM23 5PY CM23 5PZ CM23 5QA CM23 5QB CM23 5QD CM23 5QF CM23 5QG CM23 5QH CM23 5QJ CM23 5QL CM23 5QN CM23 5QP CM23 5QQ CM23 5QR CM23 5QS CM23 5QT CM23 5QU CM23 5QX CM23 5QY CM23 5QZ CM23 5RA CM23 5RB CM23 5RD CM23 5RE CM23 5RG CM23 5RN CM23 5RS CM23 5SB CM23 5SH CM23 5SJ CM23 5SN CM23 5SZ CM23 5TB CM23 5TT

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Living in East Hertfordshire

This is a large suburban code with full cable coverage. Most premises have gigabit access; the minority on superfast speeds are typically in newer or fringe areas.

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

CM23 broadband FAQs

Is gigabit standard in CM23?

At 80.9%, gigabit is widely available, though roughly 1 in 5 premises lack it.

Why is ultrafast higher than gigabit?

Fibre-to-the-cabinet deployments provide ultrafast speeds to premises not yet reached by cable gigabit.

Is connectivity adequate across the whole code?

Yes; zero below-USO and 0.6% below 10 Mbps indicates universal adequate-to-excellent coverage.

For remote workers, is this area reliable?

Four in five postcodes have gigabit-capable broadband; postcode-specific checks remain worthwhile.

Neighbouring districts

CM24

270 postcodes

84% superfast

CM22

512 postcodes

97% superfast

SG10

108 postcodes

89% superfast

CM21

310 postcodes

94% superfast

SG11

375 postcodes

89% superfast

CM17

522 postcodes

97% superfast

Check your exact postcode

Every postcode in CM23 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