Is There A Blast Web Service That Enables The Retrieval Of Refseq Identifiers

I can't seem to find a BLAST web service where I can provide "RefSeq" as the selected database. Biocatalogue has 2 available REST services - http://www.biocatalogue.org/rest_methods/60 and - http://www.biocatalogue.org/rest_methods/207

But neither accept RefSeq as the database.

Any ideas? Thanks!