diff --git a/interface/web/dns/form/dns_alias.tform.php b/interface/web/dns/form/dns_alias.tform.php
index 8d103f6be9f3bca3b0a048707db330c105d68b17..69e060fd15dc1bd93693f8ec2af455ce0c5b742d 100644
--- a/interface/web/dns/form/dns_alias.tform.php
+++ b/interface/web/dns/form/dns_alias.tform.php
@@ -102,7 +102,7 @@ $form["tabs"]['dns'] = array (
 			'validators'	=> array ( 	0 => array (	'type'	=> 'NOTEMPTY',
 														'errmsg'=> 'data_error_empty'),
 										1 => array (	'type'	=> 'REGEX',
-														'regex' => '/^[\w\.\-]{1,64}$/',
+														'regex' => '/^[\w\.\-]{1,255}$/',
 														'errmsg'=> 'data_error_regex'),
 									),
 			'default'	=> '',
diff --git a/interface/web/dns/form/dns_cname.tform.php b/interface/web/dns/form/dns_cname.tform.php
index aedadc6ab1530fcec4486d5b9bc28e752524a9c9..e8f9a4e023e2335080e11ba3f9632473c2761664 100644
--- a/interface/web/dns/form/dns_cname.tform.php
+++ b/interface/web/dns/form/dns_cname.tform.php
@@ -100,7 +100,7 @@ $form["tabs"]['dns'] = array (
 			'validators'	=> array ( 	0 => array (	'type'	=> 'NOTEMPTY',
 														'errmsg'=> 'data_error_empty'),
 										1 => array (	'type'	=> 'REGEX',
-														'regex' => '/^[\w\.\-]{1,64}$/',
+														'regex' => '/^[\w\.\-]{1,255}$/',
 														'errmsg'=> 'data_error_regex'),
 									),
 			'default'	=> '',
diff --git a/interface/web/dns/form/dns_ns.tform.php b/interface/web/dns/form/dns_ns.tform.php
index 6fcc7a56983b5fd8c2dda10dfc435ead25c6a795..aad83bd18970007809811d35eda1c0409ae0905e 100644
--- a/interface/web/dns/form/dns_ns.tform.php
+++ b/interface/web/dns/form/dns_ns.tform.php
@@ -100,7 +100,7 @@ $form["tabs"]['dns'] = array (
 			'validators'	=> array ( 	0 => array (	'type'	=> 'NOTEMPTY',
 														'errmsg'=> 'data_error_empty'),
 										1 => array (	'type'	=> 'REGEX',
-														'regex' => '/^[\w\.\-]{1,64}$/',
+														'regex' => '/^[\w\.\-]{1,255}$/',
 														'errmsg'=> 'data_error_regex'),
 									),
 			'default'	=> '',