Domain Mapping: Custom domains work, but do not list under Network Admin

Hi everyone,

I could not find a direct hit on an answer on this one, so here it goes:

While my "subdirectory TLD custom domains" are mapping just fine, There are not listing themselves next to the original blog address in the Network Admin - Sites section: in the center collum. Example: orginal blog address is: tisrightcom, Custom site address is the TLD: tisright.com. The only difference between the two is the lack of the DOT.