All of the servers (EU, US and Asia) have exactly the same Server Paragon Level. This week, the Server Paragon Level is 330. This increases by 10 every week on the weekly reset at 03:00 (server) on a Monday morning.
Servers do not have a Combat Rating level. Each of the difficulties (Normal, Hell 1-3, Inferno 1-3) have different Combat Rating requirements. For example…
- Hell 3 CR - Open World (21420), Dungeons (22520), Raid Bosses (22520, 24570, 26620, 30720, 34900).
- INF1 CR - Open World (34900), Dungeons (35070), Raid Bosses (35320, 35820, 36320, 36820, 37320), Gauntlet (37320).
- INF2 CR - Open World (37320), Dungeons (37520), Raid Bosses (37720, 38120, 38520, 38920, 39320), Gauntlet (39320).
This means your hero should be in Hell 3 as it doesn’t quite have enough CR for Inferno 1 yet. However, as you’ve been away for over a year and a half, I pretty much guarantee that the reason you don’t have enough for Inferno 1 yet is not the base CR of your gear, it’s the other things that you’re missing 1.5 years of…
Because servers do not have a Combat Rating requirement and, whilst they do have a Server Paragon Level, that’s exactly the same for every single server.
Read the thread I linked, to see all the sources of CR that you could work on, not just getting new gear items.