I was applying for a job and they refused to let me enter the # as how to call me, then the mintsim acted up so I ended up using a relative's landline, which is not even a landline anymore because the copper got ripped out.
I don't recall which job used the software, but it was some type of HR software that ingested CVs and dispenses pain and/or nothing. (Dark joke).
Anyways, sorry in all seriousness but all I can say is it was HR software for a job application and that surprised me since I basically got taught it's pretty normal to list a voip # especially if you can get a cool one with some sick digits :-)