zcf.forthfire.com has no NS records.
NS records for this zone are defined at forthfire.com.
NS records for this zone are defined at forthfire.com.
Question and response
Question
dig zcf.forthfire.com. NS
Answer
The response has no answer records.
Authority
forthfire.com. 1800 SOA camilo.ns.cloudflare.com. dns.cloudflare.com. 2396689945 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0