fxx3._domainkey.wicom-telefonica.com has no NS records.
NS records for this zone are defined at wicom-telefonica.com.
NS records for this zone are defined at wicom-telefonica.com.
Question and response
Question
dig dkim3.3b429c671977.p436.email.myshopify.com. NS
Answer
The response has no answer records.
Authority
p436.email.myshopify.com. 300 SOA ns-cloud-e1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0