Very generic extension IMO, registered a few LLL's so far...
- CNC.GDN
- CND.GDN
- CNF.GDN
- CNG.GDN
- CNH.GDN
- CNJ.GDN
- CNK.GDN
- CNL.GDN
- CNM.GDN
- CNQ.GDN
- CNR.GDN
- CNS.GDN
- CNT.GDN
- CNW.GDN
- CNX.GDN
- CNY.GDN
- DDG.GDN
- DFG.GDN
- DGN.GDN
- DNG.GDN
- DNH.GDN
- DPR.GDN
- DRM.GDN
- DSH.GDN
- DSX.GDN
- DXS.GDN
- RKS.GDN
- RLH.GDN
- RRK.GDN
- RSK.GDN
- SPX.GDN
- SRH.GDN
- SSB.GDN
- SSF.GDN