Failed to pull image "registry.suse.com/suse/sle15:15.6"

It looks like I can’t pull the image for SUSE Linux Enterprise Server 15 SP6 Base Container Image as it doesn’t look available anymore.

The link for SUSE 15 SP6 which is found here is also down.

I just tried pulling registry.suse.com/suse/sle15:15.6 using podman on openSUSE Leap 15.6 and it worked for me

$ podman pull registry.suse.com/suse/sle15:15.6
Trying to pull registry.suse.com/suse/sle15:15.6...
Getting image source signatures
Checking if image destination supports signatures
Copying blob 4c0a8f48571c done   | 
Copying config 2daf00953f done   | 
Writing manifest to image destination
Storing signatures
2daf00953f6d5cf9a451c818b5627485c27ceab2dbadd15f1bd97e4eaa031a95
$ podman images
REPOSITORY                    TAG         IMAGE ID      CREATED       SIZE
registry.suse.com/suse/sle15  15.6        2daf00953f6d  42 hours ago  125 MB