Add dns_utils.get_ns()

app/dns_utils.py

@@ -12,6 +12,14 @@ def _get_dns_resolver():
     return my_resolver
 
 
+def get_ns(hostname) -> [str]:
+    try:
+        answers = _get_dns_resolver().resolve(hostname, "NS")
+    except:
+        return []
+    return [a.to_text() for a in answers]
+
+
 def get_cname_record(hostname) -> Optional[str]:
     """Return the CNAME record if exists for a domain, WITHOUT the trailing period at the end"""
     try:

shell.py

@@ -9,6 +9,7 @@ from app.config import (
     ALIAS_DOMAINS,
     PREMIUM_ALIAS_DOMAINS,
 )
+from app.dns_utils import get_ns
 from app.email_utils import send_email, render, get_email_domain_part
 from app.models import *
 from job_runner import (