"RTTY and Data" band plans ?

Andrew O'Brien

I'm forgetting some of the band plans for digital modes .  In looking at the ARRL's band plans  it lists wide swaths of bandwidth simply as "CW, RTTY/Data ".  For example 14.000 to 14150 . I never hear any digital modes from the USA below 14066.  Can any digital modes (attended) operate as low as 14.003?
Andy K3UK

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