Just past page 281 of Becky Chambers's delightful "the galaxy, and the ground within".
Received Message
Encryption: 0
From: GC Transit Authority --- Gora System (path: 487-45411-479-4)
To: Ooli Oht Ouloo (path: 5787-598-66)
Subject: URGENT UPDATE
Man I love the series.Looks like this multispecies universe has centrally-agreed-upon path addressing system.