The IP-100 LR has a 2.4ghz Xbee module built in for reception, the 418 MHz version uses a small external receiver that plugs into the IP-100, the IP-100 will itself only send data to Weather Underground but using the rainwisenet service provided by Rainwise you can send the data to AWEKAS, PWS weather,Weatherflow and Met Office.
Using 3rd party software like Weather Display you can send the data to many different sites including CWOP.