All the “official” Puppies since version 2 are hosted at Ibiblio.
Ibiblio also hosts the puppy specific packages (pet) used to build puppies as well as squashfs files (sfs) with kernels, kernel sources, large applications and application frameworks.
The Ibiblio puppylinux directory is mirrored by several sites world-wide.
The NLUUG and the UoC mirrors in Europe and the AARNET and the Internode mirrors in Australia are known to update regularly and are usually faster than Ibiblio.
Mirrors may take up to a day to incorporate changes in Ibiblio.