diff --git a/source/initial-dns-seedlist-discovery/initial-dns-seedlist-discovery.md b/source/initial-dns-seedlist-discovery/initial-dns-seedlist-discovery.md
index c886e775ad..77bfd6d293 100644
--- a/source/initial-dns-seedlist-discovery/initial-dns-seedlist-discovery.md
+++ b/source/initial-dns-seedlist-discovery/initial-dns-seedlist-discovery.md
@@ -61,6 +61,8 @@ has:
      - `{hostname}` = `{domainname}` = `localhost`
      - `{hostname}` = `{domainname}` = `mongodb.local`
 
+Only `{domainname}` is used during SRV record verification and `{subdomain}` is ignored.
+
 ### MongoClient Configuration
 
 #### srvMaxHosts
@@ -229,7 +231,6 @@ See README.md in the accompanying [test directory](tests/README.md).
 
 See README.md in the accompanying [test directory](tests/README.md).
 
-
 Additionally, see the `mongodb+srv` test `invalid-uris.yml` in the
 [Connection String Spec tests](../connection-string/tests/README.md).