spf.shopmania.biz has no NS records.
NS records for this zone are defined at shopmania.biz.
NS records for this zone are defined at shopmania.biz.
Question and response
Question
dig spf.shopmania.biz. NS
Answer
The response has no answer records.
Authority
shopmania.biz. 300 SOA dns1.stabletransit.com. domains.shopmania.net. 1726735873 21600 3600 1814400 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0