You might want to check some of these journals and fora:

http://journalseek.net/cgi-bin/journalseek/journalsearch.cgi?field=category&query=opres.misc

https://www.informs.org/Blogs/Operations-Research-Forum

http://community.wolfram.com/content?curTag=operations%20research

And never ignore the IETF, specifically, the routing area working group (rtg):

https://datatracker.ietf.org/wg/

The following websites may be of your interest:

http://www.math.illinois.edu/~dwest/openp/

http://www.math.illinois.edu/~dwest/pcol/pcolink.html 

You find some open problems at the end in some of my research papers, in particular, papers on domination theory.

v r kulli reseaerchgate