diff --git a/platform/dns.c b/platform/dns.c
index e2c5905..f8c2f60 100644
--- a/platform/dns.c
+++ b/platform/dns.c
@@ -40,6 +40,24 @@ HRESULT dns_platform_hook_init(const struct dns_config *cfg)
         return hr;
     }
 
+    hr = dns_hook_push(L"op.auth.sys-all.net", cfg->startup);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    hr = dns_hook_push(L"at.auth.sys-all.net", cfg->startup);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    hr = dns_hook_push(L"at.sys-all.net", cfg->startup);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
     hr = dns_hook_push(L"ib.naominet.jp", cfg->billing);
 
     if (FAILED(hr)) {