These older Ubuntu releases are now in Extended Maintenance (ESM):

We are happy to provide hosting for the following projects via the cdimage server. While they are not commercially supported by Canonical, they receive full support from their communities.

The cdimage server also hosts releases of other Ubuntu images not found on this server, such as builds for less popular architectures and other non-standard and unsupported images. For Ubuntu Desktop and Server on popular architectures, please see the links above instead.

Ports, Unsupported, and Experimental Images for Ubuntu

For old releases, see

Index of /ubuntu-cd/21.04/

Index of /ubuntu-cd/21.04/

FOOTER.html                                        22-Apr-2021 14:43                 810
HEADER.html                                        22-Apr-2021 14:43                3984
SHA256SUMS                                         22-Apr-2021 19:34                 198
SHA256SUMS.gpg                                     22-Apr-2021 19:34                 833
ubuntu-21.04-desktop-amd64.iso                     20-Apr-2021 11:16          2818738176
ubuntu-21.04-desktop-amd64.iso.torrent             22-Apr-2021 14:43              215416
ubuntu-21.04-desktop-amd64.iso.zsync               22-Apr-2021 14:43             5505585
ubuntu-21.04-desktop-amd64.list                    20-Apr-2021 11:16               15448
ubuntu-21.04-desktop-amd64.manifest                20-Apr-2021 11:13               57205
ubuntu-21.04-live-server-amd64.iso                 22-Apr-2021 01:48          1174243328
ubuntu-21.04-live-server-amd64.iso.torrent         22-Apr-2021 14:43               89959
ubuntu-21.04-live-server-amd64.iso.zsync           22-Apr-2021 14:43             2293689
ubuntu-21.04-live-server-amd64.list                22-Apr-2021 01:48                4247
ubuntu-21.04-live-server-amd64.manifest            21-Apr-2021 23:37               16265