Probably for adsl modem+routers it falls on 192.168.0.1 but for newer versions of WGR614 it's 192.168.1.1.Also to include WGT624,WPN824,WNDR300,WPNT824 they're all 192.168.1.1 by default.
I used to be a Technical Support Engineer for Netgear(voice&email support).