diff --git a/pkg/issuer/acme/dns/util/wait_test.go b/pkg/issuer/acme/dns/util/wait_test.go
index 2a7ae391e..1a510af37 100644
--- a/pkg/issuer/acme/dns/util/wait_test.go
+++ b/pkg/issuer/acme/dns/util/wait_test.go
@@ -22,11 +22,17 @@ var lookupNameserversTestsOK = []struct {
 	fqdn string
 	nss  []string
 }{
-	{"books.google.com.ng.",
-		[]string{"ns1.google.com.", "ns2.google.com.", "ns3.google.com.", "ns4.google.com."},
+	{
+		fqdn: "en.wikipedia.org.",
+		nss:  []string{"ns0.wikimedia.org.", "ns1.wikimedia.org.", "ns2.wikimedia.org."},
 	},
-	{"www.google.com.",
-		[]string{"ns1.google.com.", "ns2.google.com.", "ns3.google.com.", "ns4.google.com."},
+	{
+		fqdn: "www.google.com.",
+		nss:  []string{"ns1.google.com.", "ns2.google.com.", "ns3.google.com.", "ns4.google.com."},
+	},
+	{
+		fqdn: "physics.georgetown.edu.",
+		nss:  []string{"ns4.georgetown.edu.", "ns5.georgetown.edu.", "ns6.georgetown.edu."},
 	},
 }