diff --git a/src/Clients/IbericodeVatRatesClient.php b/src/Clients/IbericodeVatRatesClient.php
index 5247212..d7601e8 100644
--- a/src/Clients/IbericodeVatRatesClient.php
+++ b/src/Clients/IbericodeVatRatesClient.php
@@ -36,12 +36,13 @@ public function fetch(): array
 
     private function parseResponse(string $response_body): array
     {
-        $result = json_decode($response_body, false);
+        $result = json_decode($response_body, true);
+
 
         $return = [];
-        foreach ($result->items as $country => $periods) {
+        foreach ($result['items'] as $country => $periods) {
             foreach ($periods as $i => $period) {
-                $periods[$i] = new Period(new \DateTimeImmutable($period->effective_from), (array) $period->rates);
+                $periods[$i] = new Period(new \DateTimeImmutable($period['effective_from']), (array) $period['rates'],  $period['exceptions'] ?? []);
             }
 
             $return[$country] = $periods;
diff --git a/src/Countries.php b/src/Countries.php
index c89cf0f..b0d24f9 100644
--- a/src/Countries.php
+++ b/src/Countries.php
@@ -262,7 +262,9 @@ class Countries implements \Iterator, \ArrayAccess
         'VI' => 'U.S. Virgin Islands',
         'VN' => 'Vietnam',
         'VU' => 'Vanuatu',
-        'WF' => 'Wallis & Futuna',
+        'WF' => 'Wallis And Futuna',
+        'EH' => 'Western Sahara',
+        'XI' => 'Northern Ireland',
         'WS' => 'Samoa',
         'YE' => 'Yemen',
         'YT' => 'Mayotte',
@@ -285,7 +287,7 @@ public function hasCountryCode(string $code): bool
      */
     public function getCountryCodesInEU(): array
     {
-        return ['AT', 'BE', 'BG', 'CY', 'CZ', 'DE', 'DK', 'EE', 'ES', 'FI', 'FR', 'GR', 'HU', 'HR', 'IE', 'IT', 'LT', 'LU', 'LV', 'MT', 'NL', 'PL', 'PT', 'RO', 'SE', 'SI', 'SK'];
+        return ['AT', 'BE', 'BG', 'CY', 'CZ', 'DE', 'DK', 'EE', 'ES', 'FI', 'FR', 'GR', 'HU', 'HR', 'IE', 'IT', 'LT', 'LU', 'LV', 'MT', 'NL', 'PL', 'PT', 'RO', 'SE', 'SI', 'SK', 'XI'];
     }
 
     /**
diff --git a/src/Period.php b/src/Period.php
index 3b59d59..6df76b2 100644
--- a/src/Period.php
+++ b/src/Period.php
@@ -17,11 +17,13 @@ class Period
 {
     private $effectiveFrom;
     private $rates = [];
+    private $exceptions = [];
 
-    public function __construct(DateTimeInterface $effectiveFrom, array $rates)
+    public function __construct(DateTimeInterface $effectiveFrom, array $rates, array $exceptions = [])
     {
         $this->effectiveFrom = $effectiveFrom;
         $this->rates = $rates;
+        $this->exceptions = $exceptions;
     }
 
     public function getEffectiveFrom(): DateTimeInterface
@@ -29,12 +31,27 @@ public function getEffectiveFrom(): DateTimeInterface
         return $this->effectiveFrom;
     }
 
-    public function getRate(string $level): float
+    public function getRate(string $level, ?string $postcode = null) : float
     {
         if (!isset($this->rates[$level])) {
             throw new InvalidArgumentException("Invalid rate level: {$level}");
         }
 
-        return $this->rates[$level];
+        return $this->getExceptionRate($level, $postcode) ?? $this->rates[$level];
+    }
+
+    private function getExceptionRate(string $level, ?string $postcode): ?float
+    {
+        if(!$postcode){
+            return null;
+        }
+
+        foreach ($this->exceptions as $exception){
+            if(preg_match('/^'.$exception['postcode'].'$/', $postcode)){
+                return $exception[$level] ?? $exception[Rates::RATE_STANDARD];
+            }
+        }
+
+        return null;
     }
 }
diff --git a/src/Rates.php b/src/Rates.php
index a98a10b..507619b 100644
--- a/src/Rates.php
+++ b/src/Rates.php
@@ -67,6 +67,7 @@ private function load(): void
     private function loadFromFile(): void
     {
         $contents = file_get_contents($this->storagePath);
+
         $data = unserialize($contents, [
             'allowed_classes' => [
                 Period::class,
@@ -131,25 +132,27 @@ private function resolvePeriod(string $countryCode, DateTimeInterface $datetime)
     /**
      * @param string $countryCode ISO-3166-1-alpha2 country code
      * @param string $level
+     * @param ?string $postcode
      * @return float
      * @throws \Exception
      */
-    public function getRateForCountry(string $countryCode, string $level = self::RATE_STANDARD): float
+    public function getRateForCountry(string $countryCode, string $level = self::RATE_STANDARD, ?string $postcode = null) : float
     {
         $todayMidnight = new \DateTimeImmutable('today midnight');
-        return $this->getRateForCountryOnDate($countryCode, $todayMidnight, $level);
+        return $this->getRateForCountryOnDate($countryCode, $todayMidnight, $level, $postcode);
     }
 
     /**
      * @param string $countryCode ISO-3166-1-alpha2 country code
      * @param DateTimeInterface $datetime
      * @param string $level
+     * @param ?string $postcode
      * @return float
      * @throws Exception
      */
-    public function getRateForCountryOnDate(string $countryCode, \DateTimeInterface $datetime, string $level = self::RATE_STANDARD): float
+    public function getRateForCountryOnDate(string $countryCode, \DateTimeInterface $datetime, string $level = self::RATE_STANDARD, ?string $postcode = null) : float
     {
         $activePeriod = $this->resolvePeriod($countryCode, $datetime);
-        return $activePeriod->getRate($level);
+        return $activePeriod->getRate($level, $postcode);
     }
 }
diff --git a/src/Validator.php b/src/Validator.php
index d276ba9..16d7759 100644
--- a/src/Validator.php
+++ b/src/Validator.php
@@ -43,6 +43,7 @@ class Validator
         'SI' => '\d{8}',
         'SK' => '\d{10}',
         'SM' => '\d{5}',
+        'XI' => '(\d{9}|\d{12}|(GD|HA)\d{3})',
     ];
 
     /**
diff --git a/tests/CountriesTest.php b/tests/CountriesTest.php
index 85381bc..f818cba 100644
--- a/tests/CountriesTest.php
+++ b/tests/CountriesTest.php
@@ -13,7 +13,7 @@ public function testIterator()
     {
         $countries = new Countries();
 
-        $this->assertCount(249, $countries);
+        $this->assertCount(250, $countries);
     }
 
     public function testArrayAccess()
diff --git a/tests/RatesTest.php b/tests/RatesTest.php
index 12e865b..e8c50da 100644
--- a/tests/RatesTest.php
+++ b/tests/RatesTest.php
@@ -7,7 +7,6 @@
 use Ibericode\Vat\Exception;
 use Ibericode\Vat\Period;
 use Ibericode\Vat\Rates;
-use PHPUnit\Framework\Error\Error;
 use PHPUnit\Framework\TestCase;
 
 class RatesTest extends TestCase
@@ -39,6 +38,17 @@ private function getRatesClientMock()
                     new Period(new \DateTimeImmutable('2019/01/01'), [
                         'standard' => 21.00,
                         'reduced' => 9.00,
+                    ], [
+                        [
+                            "name" => "Park Frankendael",
+                            "postcode" => "1097",
+                            "standard" => 0
+                        ],
+                        [
+                            "name" => "Park de Meer",
+                            "postcode" => "(1098|1099)",
+                            "standard" => 0
+                        ]
                     ])
                 ]
             ]);
@@ -53,6 +63,15 @@ public function testGetRateForCountry()
         $this->assertEquals(21.0, $rates->getRateForCountry('NL'));
     }
 
+    public function testGetRateForCountryAndPostcode()
+    {
+        $client = $this->getRatesClientMock();
+        $rates = new Rates('vendor/rates', 30, $client);
+        $this->assertEquals(0, $rates->getRateForCountry('NL', Rates::RATE_STANDARD, '1097'));
+        $this->assertEquals(0, $rates->getRateForCountry('NL', Rates::RATE_STANDARD, '1099'));
+        $this->assertEquals(0, $rates->getRateForCountry('NL', Rates::RATE_STANDARD, '1098'));
+    }
+
     public function testGetRateForCountryOnDate()
     {
         $client = $this->getRatesClientMock();