$ORIGIN . $TTL 1 ; The PTR is the same as the NS, so there are the differences and basics only. ; OK @ PTR test.example.com ; Relative dname @ PTR \# 1 00 ; Hexadecimal rdata @ TYPE12 \# 1 00 ; TYPE + Hexadecimal rdata @ TYPE12 @ ; TYPE @ ptr @ ; Type in lower-case ; KO @ PTR