firewall exceptions

Hello,

I’ve an application using OSM map tiles, which I’m having to deploy behind a particularly strict firewall. Essentially all traffic is blocked by default. Is there any definitive list of outgoing & incoming IPs and ports that need allowing to use OSM?

I’ve tried enabling 185.73.44.30:80 but I’m guessing there’s more to it than that as i’m still not getting the maps tile requests back.

Any help/ideas greatly appreciated!!