This is possible , I did a quick scan on the forum and found these examples.
Pipeline rule to generate a Object field with obtained IPs (multi_value) for a QNAME, from a DNS LookUp Table - #3 by tmacgbay
Pipeline rule, multiple values using regex function return an empty table - #8 by piellick
Pipeline with regex value
Regex pipeline : Get IP from string field
Pipeline rule to generate a Object field with obtained IPs (multi_value) for a QNAME, from a DNS LookUp Table - #11 by tmacgbay
EDIT What @tmacgbay said also