Index of ftp://releases.ubuntu.com/cdimage/releases/

Parent Directory

14.04	6.00b	January 23 2014
14.04.6	6.00b	March 7 2019
16.04	6.00b	February 17 2017
16.04.7	6.00b	August 13 2020
18.04	6.00b	March 9 2018
18.04.5	6.00b	August 13 2020
18.04.6	6.00b	September 16 2021
20.04	5.00b	April 3 2020
20.04.3	5.00b	August 26 2021
20.04.4	5.00b	February 24 2022 at 20:18
21.10	6.00b	September 24 2021
22.04	5.00b	March 31 2022 at 16:05
bionic	4.00Kb	August 8 2019
focal	4.00Kb	April 23 2020
impish	4.00Kb	October 14 2021
jammy	4.00Kb	April 21 2022 at 13:39
streams	4.00Kb	October 21 2021
trusty	4.00Kb	April 17 2014
xenial	4.00Kb	February 17 2017