.nty files but it is a .tiff

[Raccoon Sam]

I have some .nty files and I used a program to I'd the file type and it came back as a tiff I was just wondering because a nty file won't open with any program and renaming the extension doesn't work if there's another way to convert or extract the file thanks in advance

Please upload the said .nty file in question so we can take a look at it