Yes it does: # host adsl-99-29-103-142.dsl.hstntx.sbcglobal.net adsl-99-29-103-142.dsl.hstntx.sbcglobal.net has address 99.29.103.142
SBC Global's ns1.swbell.net does answer with the appropriate IP address, but neither our companies name servers or my local dns on my home network can resolve adsl-99-29-103-142.dsl.hstntx.sbcglobal.net. I restarted named on my local network (cleared it's cache) and now it resolves. This behavior can be expected when dealing with dynamic dns updates, in other words, the updates do not propagate across the internet instantly.
