In defence of
@dubscottie , Irish Rail is a lot more protective of internal information than is the case in the UK. The weekly notices, which contain a lot more useful information about train running than what you'll find in the UK, come with a specific warning on the front cover that they are not too bad shared with the public, to give one such example. There's also no equivalent of Real Time Trains. It's entirely plausible that an Irish Rail employee posting this information directly is in breach of their contract.
Also, as the person who maintains the equivalent route & traction knowledge thread for the UK, quite a lot of information there is provided anonymously to me directly as well, to avoid any issues with social media policies. When making changes about my own employer's info, I'm very careful to do only when it becomes public knowledge.
Most of the information in this thread came from a post on the Irish forum boards.ie - so I can not comment on who actually supplied it originally. There were many issues with that original data however, which has been corrected over the years.
If there are any IÉ employees who would like to help update this thread and point out any corrections, but have concerns, they are more than welcome to message me in the same way and I'll ensure that the thread is changed without reference to who is responsible.