spf1.writestorage.com has no NS records.
NS records for this zone are defined at writestorage.com.
NS records for this zone are defined at writestorage.com.
Question and response
Question
dig spf1.writestorage.com. NS
Answer
The response has no answer records.
Authority
writestorage.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1771853540 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0