I would use this over a WorldCat.org search:

http://xissn.worldcat.org/

but I am unaware of a data dump.
Roy

On Thu, Oct 16, 2014 at 7:16 PM, Stuart Yeates <[log in to unmask]>
wrote:

> My understanding is that there is no universal ISSN list but that worldcat
> allows querying of their database by ISSN.
>
> Which method of sampling the ISSN namespace is going to cause least pain?
> http://www.worldcat.org/ISSN/ seems to be the one talked about, but is
> there another that's less resource intensive? Maybe someone's already
> exported this data?
>
> cheers
> stuart
> --
> I have a new phone number: 04 463 5692
>