I think there's a post on this board about WFNNB and Experian being in cahoots . .? I have a retail card thru WFNNB, have had it for a year and a half and cannot get a CL increase to save my life. The CL on this card is $250. Yet I do a BDD w/ Citi for $3200? Go figure! I don't recommend this credit card company at all, just my opinion, though.
If WFNNB, they will check Exp. I got the J.Crew card last October, EXP faco 640 with a 300 CL. I called at 7 months and asked if it was possible to get a CLI and the rep said the acct has to be open 9 months ... at 9 months, my limit was raised automatically to 800 (don't foresee ever needing more than that).