Where does U-Boot reside?

[Armate]

On my NanoPi Neo Core, the flash has the following partitions:

 

Quote

 

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xa32f0074

Device         Boot  Start     End Sectors  Size Id Type
/dev/mmcblk0p1       49152  131071   81920   40M 83 Linux
/dev/mmcblk0p2      131072 7634943 7503872  3.6G 83 Linux

 

 

Most of the drives I've encountered have the starting sector set as 2048, while this one has 49152.

I'm assuming that U-Boot reside before the 49152th sector.

 

How can I see what is below 49152th sector in the partition table?