Not afaik, but you can use callwithus's api for $0.0003 per query.
I integrated it into my php xml_curl lcr script, which you can grab here: mod_xml-with-PHP

-Avi Marcus

On Fri, Feb 25, 2011 at 8:38 PM, Sergey Okhapkin <sos@sokhapkin.dyndns.org> wrote:
There is no free service, but LRN lookup price is a fraction of cent per
query, why not pay a few cents a day?

On Friday 25 February 2011, egc52556 wrote:
> I appreciate there is no complete database of current LRN to download.  But
> is there a free service where I can do a few lookups, say no more than
> 10-20 a day?