diff --git a/contents/codes/444.md b/contents/codes/444.md
new file mode 100644
index 0000000..2da1552
--- /dev/null
+++ b/contents/codes/444.md
@@ -0,0 +1,18 @@
+---
+# This is not a status code available in the standard, but it exists
+# with significant prominence in the wild
+set: 4
+code: 444
+title: Nginx closed connection without sending a response.
+---
+
+A non-standard status code used to instruct [nginx][2] to close the connection without sending a response to the client, most commonly used to deny malicious or malformed requests.
+
+This status code is not seen by the client, it only appears in nginx log files.
+
+---
+
+* Source: [nginx documentation][1]
+
+[1]: <http://nginx.org/en/docs/http/ngx_http_rewrite_module.html#return>
+[2]: <http://nginx.org>