The ornamental design for a holder of earphonecord, as shown and described.
FIG. 1 is a perspective view of a holder of earphone cord;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left-side elevational view thereof, the left-side elevational view being a mirror image;
FIG. 5 is a right-side elevational view thereof, the left-side elevational view being a mirror image;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is an alternate perspective view showing the environment of use when the holder of earphone cord combined with the other one;
FIG. 9 is a perspective view with the bottom; and,
FIG. 10 is an alternate left-side elevational view showing the environment of use when the holder of earphone cord combined with the other one, with earphones, cord and plug shown in broken lines.
Portions in broken lines are for illustrative purposes only and form no part of the claimed design.