According to Section 2-9-1-a of the FAA's Air Traffic Organization Policy, a phonetic letter is assigned to each tower-issued ATIS update.
This information is available on the ATIS VHF frequency for an airport, or via a phone call to a designated ATIS number for the airport.
There is a passing reference on the Wikipedia page to ATIS being available electronically via a service named "D-ATIS", although I've never heard of this.
I'd love to be able to view this information electronically, rather than having to get my VHF handheld, or the plane's radio going and tune it in before flight. The voice system is frequently engaged. If it was available via the internet, it'd be super-easy to access.
Is there a means accessing the ATIS - including the identifier - for a given airport in electronic form via the internet? If so, how?
NOTE: I know it's possible to get METAR reports, but they are typically automatically generated, not manually adjusted by the tower (as ATIS sometimes is), and don't include the phonetic letter designation issued by the tower and required for initial tower contact.