diff --git a/src/Domain/Entity/Site.php b/src/Domain/Entity/Site.php
index 563b73d..bb09e63 100644
--- a/src/Domain/Entity/Site.php
+++ b/src/Domain/Entity/Site.php
@@ -120,7 +120,7 @@ final class Site {
         if (isset($this->external->domains)) {
             foreach ($this->external->domains as $url) {
                 $this->domains = SiteFactory::normalize(
-                    array_merge($this->domains, explode("\n", file_get_contents($url)))
+                    array_merge($this->domains, SiteFactory::trimArray(explode("\n", file_get_contents($url))))
                 );
             }
         }
@@ -128,7 +128,7 @@ final class Site {
         if (isset($this->external->ip4) && $this->isUseIpv4) {
             foreach ($this->external->ip4 as $url) {
                 $this->ip4 = SiteFactory::normalize(
-                    array_merge($this->ip4, explode("\n", file_get_contents($url))),
+                    array_merge($this->ip4, SiteFactory::trimArray(explode("\n", file_get_contents($url)))),
                     true
                 );
             }
@@ -137,7 +137,7 @@ final class Site {
         if (isset($this->external->ip6) && $this->isUseIpv6) {
             foreach ($this->external->ip6 as $url) {
                 $this->ip6 = SiteFactory::normalize(
-                    array_merge($this->ip6, explode("\n", file_get_contents($url))),
+                    array_merge($this->ip6, SiteFactory::trimArray(explode("\n", file_get_contents($url)))),
                     true
                 );
             }
@@ -146,7 +146,10 @@ final class Site {
         if (isset($this->external->cidr4) && $this->isUseIpv4) {
             foreach ($this->external->cidr4 as $url) {
                 $this->cidr4 = IP4Helper::minimizeSubnets(
-                    SiteFactory::normalize(array_merge($this->cidr4, explode("\n", file_get_contents($url))), true)
+                    SiteFactory::normalize(
+                        array_merge($this->cidr4, SiteFactory::trimArray(explode("\n", file_get_contents($url)))),
+                        true
+                    )
                 );
             }
         }
@@ -155,7 +158,7 @@ final class Site {
             foreach ($this->external->cidr6 as $url) {
                 // todo IP6Helper::minimizeSubnets
                 $this->cidr6 = SiteFactory::normalize(
-                    array_merge($this->cidr6, explode("\n", file_get_contents($url))),
+                    array_merge($this->cidr6, SiteFactory::trimArray(explode("\n", file_get_contents($url)))),
                     true
                 );
             }
diff --git a/src/Domain/Factory/SiteFactory.php b/src/Domain/Factory/SiteFactory.php
index bb2c8e6..1c19356 100644
--- a/src/Domain/Factory/SiteFactory.php
+++ b/src/Domain/Factory/SiteFactory.php
@@ -44,35 +44,35 @@ class SiteFactory {
             if (isset($external->domains)) {
                 foreach ($external->domains as $url) {
                     App::getLogger()->debug('Loading external domains from ' . $url);
-                    $domains = array_merge($domains, explode("\n", file_get_contents($url)));
+                    $domains = array_merge($domains, self::trimArray(explode("\n", file_get_contents($url))));
                 }
             }
 
             if (isset($external->ip4) && $isUseIpv4) {
                 foreach ($external->ip4 as $url) {
                     App::getLogger()->debug('Loading external ip4 from ' . $url);
-                    $ip4 = array_merge($ip4, explode("\n", file_get_contents($url)));
+                    $ip4 = array_merge($ip4, self::trimArray(explode("\n", file_get_contents($url))));
                 }
             }
 
             if (isset($external->ip6) && $isUseIpv6) {
                 foreach ($external->ip6 as $url) {
                     App::getLogger()->debug('Loading external ip6 from ' . $url);
-                    $ip6 = array_merge($ip6, explode("\n", file_get_contents($url)));
+                    $ip6 = array_merge($ip6, self::trimArray(explode("\n", file_get_contents($url))));
                 }
             }
 
             if (isset($external->cidr4) && $isUseIpv4) {
                 foreach ($external->cidr4 as $url) {
                     App::getLogger()->debug('Loading external cidr4 from ' . $url);
-                    $cidr4 = array_merge($cidr4, explode("\n", file_get_contents($url)));
+                    $cidr4 = array_merge($cidr4, self::trimArray(explode("\n", file_get_contents($url))));
                 }
             }
 
             if (isset($external->cidr6) && $isUseIpv6) {
                 foreach ($external->cidr6 as $url) {
                     App::getLogger()->debug('Loading external cidr6 from ' . $url);
-                    $cidr6 = array_merge($cidr6, explode("\n", file_get_contents($url)));
+                    $cidr6 = array_merge($cidr6, self::trimArray(explode("\n", file_get_contents($url))));
                 }
             }
         }
@@ -120,4 +120,12 @@ class SiteFactory {
         sort($array);
         return SiteFactory::normalize($array, $isIpAddresses);
     }
+
+    /**
+     * @param array $array
+     * @return array
+     */
+    public static function trimArray(array $array): array {
+        return array_map(trim(...), $array);
+    }
 }