P-xxxx: all flight prohibited within the area and altitudes listed in the sectional chart.
R-xxxx: all flight restricted within the area, altitudes, and times listed in the sectional charts. Contact information is given for getting clearance to pass through the area. GA can contact the control agency by radio, others must use phone number listed for control agency in the chart supplement.
A-xxxx: an alert area where extra vigilance must be exercised. Area, altitudes, and times are listed in the sectional charts. Clearance is not required, but these areas usually have a lot of low level jet and helicopter traffic.
Personal opinion alert!!!
Airspace and chart reading is an area that needs to be incorporated into training for recreational fliers that ply their craft outside of flying fields. There are so many people that need to be more aware of what can be expected in the airspace over their heads. Integration into the NAS must also include education of those utilizing the airspace.
@TontoFAC you can access the appropriate sectional chart using SkyVector.com. Scroll and zoom the map to your area using the World VFR setting, then select the New Orleans sectional. You can then scroll the map to access the left edge of the New Orleans sectional to find the listings for any P, R, and A airspace areas.
There was a statement you made in an earlier post about the area you are interested in being Class G airspace. That is only true when it is outside of the active times for the restricted airspace.
Another thing to watch for and they are found via NOTAM or in Aloft, B4UFLY, AirMap, etc. are NSUFR areas which are National Security UAS Flight Restricted areas. You will find them around military bases, federal prisons, nuclear power plants, etc. The NSUFR areas are No Fly Zones for UAS, but not necessarily for General Aviation.