thx RTFM...

but this is not the thing i was looking for... it gets an IP from an address...

but looking at the google-keywords remembered me of a english website called VBIP (www.vbip.com) i visited a loooong time ago...

there's is everything you (i) need...
here's the article: http://www.vbip.com/winsock-api/geth...tbyaddr-01.asp

it uses
Declare Function gethostbyaddr Lib "ws2_32.dll" (addr As Long, ByVal addr_len As Long, ByVal addr_type As Long) As Long


anyway... thx for your effort
CU