Zone apex
Start of authority
Email
Serial
2016053999
Refresh
15m
Retry
3m
Expire
3d
Negative cache TTL
15m
Question and response
Question
dig _spf.nrb.be. SOA
Answer
The response has no answer records.
Authority
nrb.be. 600 SOA ns4.nrb.be. hostmaster.nrb.be. 2016053999 900 180 259200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0