diff --git a/README.md b/README.md
index d22fa2a..34b9e0c 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Network Library for PHP with native Yggdrasil support
 
 #### Check socket is open
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Socket::isOpen('yo.index', 80)
 );
@@ -20,7 +20,7 @@ var_dump(
 
 #### Check host valid
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Socket::isHost('yo.index')
 );
@@ -28,7 +28,7 @@ var_dump(
 
 #### Check port valid
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Socket::isPort(80)
 );
@@ -38,7 +38,7 @@ var_dump(
 
 #### Resolve records
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Dig::records('yo.index', ['A', 'AAAA'], &$result = [], &$error = [], $provider = null, $timeout = 5)
 );
@@ -46,7 +46,7 @@ var_dump(
 
 #### Check hostname valid
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Dig::isHostName('yo.index')
 );
@@ -54,7 +54,7 @@ var_dump(
 
 #### Check record valid
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Dig::isRecord('A')
 );
@@ -62,12 +62,67 @@ var_dump(
 
 #### Check record value valid
 
-```
+``` php
 var_dump(
     \Yggverse\Net\Dig::isRecordValue('A', '127.0.0.1')
 );
 ```
 
+### Resolve
+
+#### Init resolver
+
+``` php
+$resolve = new \Yggverse\Net\Resolve(
+    [
+        'A',
+        'AAAA'
+    ],
+    [
+        '1.1.1.1',
+        '8.8.8.8'
+    ],
+    // ..
+);
+```
+
+#### Get resolved URL string
+
+``` php
+$resolved = $resolve->url(
+    'https://en.wikipedia.org/wiki/Domain_Name_System'
+    // next arguments contain debug variables and new address object
+);
+
+if ($resolved)
+{
+    var_dump(
+        $resolved // https://185.15.59.224/wiki/Domain_Name_System
+    );
+}
+```
+
+#### Resolve Address object
+
+``` php
+$resolved = $resolve->address(
+    new \Yggverse\Net\Address(
+        'https://en.wikipedia.org/wiki/Domain_Name_System'
+    )
+);
+
+if ($resolved)
+{
+    var_dump(
+        $resolved->get() // https://185.15.59.224/wiki/Domain_Name_System
+    );
+
+    var_dump(
+        $resolved->getHost() // 185.15.59.224
+    );
+}
+```
+
 ### Address
 
 Includes methods to work with network addresses.
@@ -89,7 +144,7 @@ Different operations with address parts:
 
 **Document root**
 
-```
+``` php
 $base = new \Yggverse\Net\Address(
     'http://yo.ygg/a1/b1/c1'
 );
@@ -107,7 +162,7 @@ var_dump(
 
 **Current folder**
 
-```
+``` php
 $base = new \Yggverse\Net\Address(
     'http://yo.ygg/a1/b1/c1'
 );
@@ -125,7 +180,7 @@ var_dump(
 
 **Ending slash**
 
-```
+``` php
 $base = new \Yggverse\Net\Address(
     'http://yo.ygg/a1/b1/c1/'
 );
@@ -143,7 +198,7 @@ var_dump(
 
 **All options**
 
-```
+``` php
 $base = new \Yggverse\Net\Address(
     'http://user:password@yo.ygg/a1/b1/c1?attribute=value#anchor'
 );
@@ -159,7 +214,20 @@ var_dump(
 );
 ```
 
+### Valid
+
+Network entities validation
+
+**Supported methods**
+
+* `Valid::ip`
+* `Valid::ip4`
+* `Valid::ip6`
+* `Valid::domainHostName`
+
 ## Integrations
 
-* [Network API with native Yggdrasil/IPv6 support](https://github.com/YGGverse/web-api)
-* [Yo! Crawler for different networks](https://github.com/YGGverse/Yo)
+* [gemini-dl](https://github.com/YGGverse/gemini-dl) - CLI batch downloader for Gemini protocol
+* [web-api](https://github.com/YGGverse/web-api) - Network API with native Yggdrasil/IPv6 support
+* [Yo!](https://github.com/YGGverse/Yo) - Crawler and search engine for different networks
+* [Yoda](https://github.com/YGGverse/Yoda) - Experimental PHP-GTK browser for Gemini protocol
diff --git a/src/Address.php b/src/Address.php
index f8b7e71..41d19c6 100644
--- a/src/Address.php
+++ b/src/Address.php
@@ -83,7 +83,9 @@ class Address
 
     public function isAbsolute(): bool
     {
-        return ($this->_scheme && $this->_host);
+        return boolval(
+            $this->_scheme || $this->_host
+        );
     }
 
     public function isRelative(): bool
@@ -198,28 +200,37 @@ class Address
         $this->_separator = $value;
     }
 
-    public function get(): string
+    public function get(
+        bool $scheme   = true,
+        bool $user     = true,
+        bool $pass     = true,
+        bool $host     = true,
+        bool $port     = true,
+        bool $path     = true,
+        bool $query    = true,
+        bool $fragment = true,
+    ): string
     {
         $address = '';
 
-        if ($scheme = $this->getScheme())
+        if ($scheme && $this->getScheme())
         {
             $address .= sprintf(
                 '%s:%s%s',
-                $scheme,
+                $this->getScheme(),
                 $this->getSeparator(),
                 $this->getSeparator()
             );
         }
 
-        if ($user = $this->getUser())
+        if ($user && $this->getUser())
         {
-            if ($pass = $this->getPass())
+            if ($pass && $this->getPass())
             {
                 $address .= sprintf(
                     '%s:%s@',
-                    $user,
-                    $pass
+                    $this->getUser(),
+                    $this->getPass()
                 );
             }
 
@@ -227,65 +238,65 @@ class Address
             {
                 $address .= sprintf(
                     '%s@',
-                    $user
+                    $this->getUser()
                 );
             }
         }
 
-        if ($host = $this->getHost())
+        if ($host && $this->getHost())
         {
-            $address .= $host;
+            $address .= $this->getHost();
         }
 
-        if ($port = $this->getPort())
+        if ($port && $this->getPort())
         {
             $address .= sprintf(
                 ':%d',
-                $port
+                $this->getPort()
             );
         }
 
-        if ($path = $this->getPath())
+        if ($path && $this->getPath())
         {
-            if (!str_starts_with($path, $this->getSeparator()))
+            if (!str_starts_with($this->getPath(), $this->getSeparator()))
             {
                 $address .= $this->getSeparator();
             }
 
-            $address .= $path;
+            $address .= $this->getPath();
         }
 
-        if ($query = $this->getQuery())
+        if ($query && $this->getQuery())
         {
             $address .= sprintf(
                 '?%s',
-                $query
+                $this->getQuery()
             );
         }
 
-        if ($fragment = $this->getFragment())
+        if ($fragment && $this->getFragment())
         {
             $address .= sprintf(
                 '#%s',
-                $fragment
+                $this->getFragment()
             );
         }
 
         return $address;
     }
 
-    public function getAbsolute(
+    public function toAbsolute(
         \Yggverse\Net\Address $base
-    ): ?string
+    ): bool
     {
         if ($this->isAbsolute())
         {
-            return $this->get();
+            return true;
         }
 
         if ($base->isRelative())
         {
-            return null;
+            return false;
         }
 
         $this->setScheme(
@@ -314,7 +325,7 @@ class Address
 
         if (str_starts_with((string) $this->getPath(), $this->getSeparator()))
         {
-            return $this->get();
+            return true;
         }
 
         if ($path = $this->getPath())
@@ -342,7 +353,7 @@ class Address
                 {
                     if (empty($prefix[$index]))
                     {
-                        return null;
+                        return false;
                     }
 
                     unset(
@@ -368,8 +379,23 @@ class Address
                     )
                 )
             );
+
+            return true;
         }
 
-        return $this->get();
+        return false;
+    }
+
+    // @TODO deprecated, legacy needs only
+    public function getAbsolute(
+        \Yggverse\Net\Address $base
+    ): ?string
+    {
+        if ($this->toAbsolute($base))
+        {
+            return $this->get();
+        }
+
+        return null;
     }
 }
\ No newline at end of file
diff --git a/src/Resolve.php b/src/Resolve.php
new file mode 100644
index 0000000..16f6d7e
--- /dev/null
+++ b/src/Resolve.php
@@ -0,0 +1,204 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yggverse\Net;
+
+class Resolve
+{
+    private array $_providers =
+    [
+        '1.1.1.1',
+        '8.8.8.8'
+    ];
+
+    private array $_records =
+    [
+        'A',
+        'AAAA'
+    ];
+
+    private int $_timeout = 5;
+
+    private bool $_shuffle = false;
+
+    public function __construct(
+        ?array $records = null,
+        ?array $providers = null,
+        ?int $timeout = null,
+        bool $shuffle = false
+    ) {
+        if ($records)
+        {
+            $this->setRecords(
+                $records
+            );
+        }
+
+        if ($providers)
+        {
+            $this->setProviders(
+                $providers
+            );
+        }
+
+        if ($timeout)
+        {
+            $this->setTimeout(
+                $timeout
+            );
+        }
+
+        $this->setShuffle(
+            $shuffle
+        );
+    }
+
+    public function getRecords(): array
+    {
+        return $this->_records;
+    }
+
+    public function setRecords(array $records): void
+    {
+        foreach ($records as $record)
+        {
+            $this->addRecord(
+                $record
+            );
+        }
+    }
+
+    public function addRecord(string $record): void
+    {
+        $this->_records[] = $record;
+
+        $this->_records = array_unique(
+            $this->_records
+        );
+    }
+
+    public function getProviders(): array
+    {
+        return $this->_providers;
+    }
+
+    public function setProviders(array $providers): void
+    {
+        foreach ($providers as $provider)
+        {
+            $this->addProvider(
+                $provider
+            );
+        }
+    }
+
+    public function addProvider(string $provider): void
+    {
+        $this->_providers[] = $provider;
+
+        $this->_providers = array_unique(
+            $this->_providers
+        );
+    }
+
+    public function setTimeout(
+        int $timeout
+    ): void
+    {
+        $this->_timeout = $timeout;
+    }
+
+    public function getTimeout(): int
+    {
+        return $this->_timeout;
+    }
+
+    public function setShuffle(
+        bool $shuffle
+    ): void
+    {
+        $this->_shuffle = $shuffle;
+    }
+
+    public function isShuffle(): bool
+    {
+        return $this->_shuffle;
+    }
+
+    public function url(
+        string $url,
+        array &$result = [],
+        array &$error = [],
+        ?\Yggverse\Net\Address &$resolved = null
+    ): ?string
+    {
+        $resolved = $this->address(
+            new \Yggverse\Net\Address(
+                $url
+            ),
+            $result,
+            $error
+        );
+
+        if ($resolved)
+        {
+            return $resolved->get();
+        }
+
+        return null;
+    }
+
+    public function address(
+        \Yggverse\Net\Address $address,
+        array &$result = [],
+        array &$error = []
+    ): ?\Yggverse\Net\Address
+    {
+        foreach ($this->_providers as $provider)
+        {
+            foreach (
+                \Yggverse\Net\Dig::records(
+                    $address->getHost(),
+                    $this->_records,
+                    $result,
+                    $error,
+                    $provider,
+                    $this->_timeout
+                ) as $record => $data
+            ) {
+
+                if ($this->_shuffle)
+                {
+                    shuffle(
+                        $data
+                    );
+                }
+
+                foreach ($data as $host)
+                {
+                    if (\Yggverse\Net\Valid::ip6($host))
+                    {
+                        $address->setHost(
+                            sprintf(
+                                '[%s]',
+                                $host
+                            )
+                        );
+                    }
+
+                    else
+                    {
+                        $address->setHost(
+                            $host
+                        );
+                    }
+
+                    return $address;
+                }
+            }
+        }
+
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/src/Valid.php b/src/Valid.php
new file mode 100644
index 0000000..3d80ecc
--- /dev/null
+++ b/src/Valid.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yggverse\Net;
+
+class Valid
+{
+    public static function ip(mixed $value): bool
+    {
+        return self::ip4($value) || self::ip6($value);
+    }
+
+    public static function ip4(mixed $value): bool
+    {
+        return false !== filter_var(
+            $value,
+            FILTER_VALIDATE_IP,
+            FILTER_FLAG_IPV4
+        );
+    }
+
+    public static function ip6(mixed $value): bool
+    {
+        return false !== filter_var(
+            $value,
+            FILTER_VALIDATE_IP,
+            FILTER_FLAG_IPV6
+        );
+    }
+
+    public static function domainHostName(mixed $value): bool
+    {
+        return false !== filter_var(
+            $value,
+            FILTER_VALIDATE_DOMAIN,
+            FILTER_FLAG_HOSTNAME
+        );
+    }
+}
\ No newline at end of file