Bandplan question

I am reluctant to ask this one. I understand the amateur band plan and how it is divided. Ive noticed tonnes of amateur activity at 6 to 6.3 Mhz and also at 13 to 13.3 Mhz. Ive even noticed it used during contests but i cant find any reference to it anywhere. Is it unoficial or am i crazy.

submitted by /u/-toronto
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