Roger Standby,
The old Ocean sector, now Upper Airspace East (UAS(E)), when incorporated with Cape High , will include airspace north of Nauru( that is north of the Equator) to the South of Tasmania then west of Darwin (approx 130 deg East) to east of Nauru ( 170 deg East )
To put it in perspective that is 1/9th of the world north to south and just under 1/8th east to west.