I have two CapOne CCs - one 7yrs old and the other 4yrs old. They took about 6 months of ontime payments to report to all three. You can always call the customer service line and ask when they will start reporting all to all three for you.
is it your own individual account or are u an authorized user? cap 1 reports a u to eq and tu only; this makes me think ex will be the first to stop counting a u accounts to cut out piggy-backing.