add a few more OIDs (#3259)

pulled from #3244
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index d3e72c0..68e1f73 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -2332,6 +2332,12 @@
 
         Corresponds to the dotted string ``"2.5.4.65"``.
 
+    .. attribute:: USER_ID
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"0.9.2342.19200300.100.1.1"``.
+
     .. attribute:: DOMAIN_COMPONENT
 
         Corresponds to the dotted string ``"0.9.2342.19200300.100.1.25"``. A string
@@ -2357,6 +2363,18 @@
 
         Corresponds to the dotted string ``"2.5.4.15"``.
 
+    .. attribute:: POSTAL_ADDRESS
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"2.5.4.16"``.
+
+    .. attribute:: POSTAL_CODE
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"2.5.4.17"``.
+
 
 .. class:: SignatureAlgorithmOID