Is ATIS information - including identifier - available on the internet?
The short and general answer is: No.

The ATIS is only a VHF recording, but even when recorded digitally, it is not available in a text-base form in many cases which would allow being made public on the internet. In the case of D-ATIS, the information can only be obtained using ACARS, other systems such as CPDLC require special equipment.

With modern technology and communication, some airports have started to use Twitter to broadcast ATIS, however they should not be used for flight purposes, but are only for entertainment.


(Image Source: Twitter - Account: @yssyatis)