GoDaddy is the root registry for all .us ccTLD, MarkMonitor is the actual registar Zoom is working with. The issue seems to be more how GoDaddy assigned to the domain to MarkMonitor not something Zoom itself likely controls (such as NS records)

.us (and other many TLDs) uses EPP to communicate between registars (MarkMonitor here) and Registry (GoDaddy). It is probably an admin error rather than code[1], some manual approval or other human review workflow for high value domain and someone clicked/filled in the wrong value at GoDaddy or MarkMonitor would be my first guess.

[1] would have been observed and fixed long before today, transfers happen all the time after all