spf.hes.trendmicro.com NS records

NS Authoritative DNS server
5m
spf.hes.trendmicro.com has no NS records.
NS records for this zone are defined at trendmicro.com.

Question and response

Question

dig spf.hes.trendmicro.com. NS

Answer

The response has no answer records.

Authority

trendmicro.com. 300 SOA muc1-tmns3.sdi.trendnet.org. dnsadmin.trendmicro.com. 2007086618 900 300 86400 300

Additional

. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0