diff --git a/src/World.Net.UnitTests/Countries/HungaryTest.cs b/src/World.Net.UnitTests/Countries/HungaryTest.cs
new file mode 100644
index 0000000..e302500
--- /dev/null
+++ b/src/World.Net.UnitTests/Countries/HungaryTest.cs
@@ -0,0 +1,61 @@
+namespace World.Net.UnitTests.Countries;
+
+public sealed class HungaryTest : AssertCountryTestBase
+{
+    private const string HUNGARY_COUNTRY_NAME = "Hungary";
+    private const string HUNGARY_NATIVE_NAME = "Magyarország";
+    private const string HUNGARY_CAPITAL = "Budapest";
+    private const string HUNGARY_OFFICIAL_NAME = "Hungary";
+    private const string HUNGARY_ISO2_CODE = "HU";
+    private const string HUNGARY_ISO3_CODE = "HUN";
+    private const int HUNGARY_NUMERIC_CODE = 348;
+    private readonly string[] HUNGARY_CALLING_CODE = ["+36"];
+    private const CountryIdentifier EXPECTEDID = CountryIdentifier.Hungary;
+
+    private static readonly (string Name, string IsoCode, string Type)[] EXPECTED_STATES =
+    [
+        new("Budapest", "HU-BU", "Capital City"),
+        new("Bács-Kiskun", "HU-BK", "County"),
+        new("Baranya", "HU-BA", "County"),
+        new("Békés", "HU-BE", "County"),
+        new("Borsod-Abaúj-Zemplén", "HU-BO", "County"),
+        new("Csongrád-Csanád", "HU-CS", "County"),
+        new("Fejér", "HU-FE", "County"),
+        new("Győr-Moson-Sopron", "HU-GS", "County"),
+        new("Hajdú-Bihar", "HU-HB", "County"),
+        new("Heves", "HU-HE", "County"),
+        new("Jász-Nagykun-Szolnok", "HU-JN", "County"),
+        new("Komárom-Esztergom", "HU-KM", "County"),
+        new("Nógrád", "HU-NO", "County"),
+        new("Pest", "HU-PE", "County"),
+        new("Somogy", "HU-SO", "County"),
+        new("Szabolcs-Szatmár-Bereg", "HU-SZ", "County"),
+        new("Tolna", "HU-TO", "County"),
+        new("Vas", "HU-VA", "County"),
+        new("Veszprém", "HU-VE", "County"),
+        new("Zala", "HU-ZA", "County")
+    ];
+
+    [Fact]
+    public void GetCountry_ReturnsCorrectInformation_ForHungary()
+    {
+        // Arrange
+        // Act
+        var country = CountryProvider.GetCountry(EXPECTEDID);
+
+        // Assert
+        AssertCorrectInformation(
+            country,
+            EXPECTEDID,
+            HUNGARY_COUNTRY_NAME,
+            HUNGARY_OFFICIAL_NAME,
+            HUNGARY_NATIVE_NAME,
+            HUNGARY_CAPITAL,
+            HUNGARY_NUMERIC_CODE,
+            HUNGARY_ISO2_CODE,
+            HUNGARY_ISO3_CODE,
+            HUNGARY_CALLING_CODE,
+            EXPECTED_STATES
+        );
+    }
+}
diff --git a/src/World.Net.UnitTests/Countries/IcelandTest.cs b/src/World.Net.UnitTests/Countries/IcelandTest.cs
new file mode 100644
index 0000000..ad9caa4
--- /dev/null
+++ b/src/World.Net.UnitTests/Countries/IcelandTest.cs
@@ -0,0 +1,49 @@
+namespace World.Net.UnitTests.Countries;
+
+public sealed class IcelandTest : AssertCountryTestBase
+{
+    private const string ICELAND_COUNTRY_NAME = "Iceland";
+    private const string ICELAND_NATIVE_NAME = "Ísland";
+    private const string ICELAND_CAPITAL = "Reykjavík";
+    private const string ICELAND_OFFICIAL_NAME = "Republic of Iceland";
+    private const string ICELAND_ISO2_CODE = "IS";
+    private const string ICELAND_ISO3_CODE = "ISL";
+    private const int ICELAND_NUMERIC_CODE = 352;
+    private readonly string[] ICELAND_CALLING_CODE = ["+354"];
+    private const CountryIdentifier EXPECTEDID = CountryIdentifier.Iceland;
+
+    private static readonly (string Name, string IsoCode, string Type)[] EXPECTED_STATES =
+    [
+        new("Capital Region", "IS-1", "Region"),
+        new("Southern Peninsula", "IS-2", "Region"),
+        new("West", "IS-3", "Region"),
+        new("Westfjords", "IS-4", "Region"),
+        new("North", "IS-5", "Region"),
+        new("Northwest", "IS-6", "Region"),
+        new("East", "IS-7", "Region"),
+        new("South", "IS-8", "Region")
+    ];
+
+    [Fact]
+    public void GetCountry_ReturnsCorrectInformation_ForIceland()
+    {
+        // Arrange
+        // Act
+        var country = CountryProvider.GetCountry(EXPECTEDID);
+
+        // Assert
+        AssertCorrectInformation(
+            country,
+            EXPECTEDID,
+            ICELAND_COUNTRY_NAME,
+            ICELAND_OFFICIAL_NAME,
+            ICELAND_NATIVE_NAME,
+            ICELAND_CAPITAL,
+            ICELAND_NUMERIC_CODE,
+            ICELAND_ISO2_CODE,
+            ICELAND_ISO3_CODE,
+            ICELAND_CALLING_CODE,
+            EXPECTED_STATES
+        );
+    }
+}
diff --git a/src/World.Net.UnitTests/Countries/IndiaTest.cs b/src/World.Net.UnitTests/Countries/IndiaTest.cs
new file mode 100644
index 0000000..c69533c
--- /dev/null
+++ b/src/World.Net.UnitTests/Countries/IndiaTest.cs
@@ -0,0 +1,77 @@
+namespace World.Net.UnitTests.Countries;
+
+public sealed class IndiaTest : AssertCountryTestBase
+{
+    private const string INDIA_COUNTRY_NAME = "India";
+    private const string INDIA_NATIVE_NAME = "भारत";
+    private const string INDIA_CAPITAL = "New Delhi";
+    private const string INDIA_OFFICIAL_NAME = "Republic of India";
+    private const string INDIA_ISO2_CODE = "IN";
+    private const string INDIA_ISO3_CODE = "IND";
+    private const int INDIA_NUMERIC_CODE = 356;
+    private readonly string[] INDIA_CALLING_CODE = ["+91"];
+    private const CountryIdentifier EXPECTEDID = CountryIdentifier.India;
+
+    private static readonly (string Name, string IsoCode, string Type)[] EXPECTED_STATES =
+    [
+        new("Andhra Pradesh", "IN-AP", "State"),
+        new("Arunachal Pradesh", "IN-AR", "State"),
+        new("Assam", "IN-AS", "State"),
+        new("Bihar", "IN-BR", "State"),
+        new("Chhattisgarh", "IN-CT", "State"),
+        new("Goa", "IN-GA", "State"),
+        new("Gujarat", "IN-GJ", "State"),
+        new("Haryana", "IN-HR", "State"),
+        new("Himachal Pradesh", "IN-HP", "State"),
+        new("Jharkhand", "IN-JH", "State"),
+        new("Karnataka", "IN-KA", "State"),
+        new("Kerala", "IN-KL", "State"),
+        new("Madhya Pradesh", "IN-MP", "State"),
+        new("Maharashtra", "IN-MH", "State"),
+        new("Manipur", "IN-MN", "State"),
+        new("Meghalaya", "IN-ML", "State"),
+        new("Mizoram", "IN-MZ", "State"),
+        new("Nagaland", "IN-NL", "State"),
+        new("Odisha", "IN-OR", "State"),
+        new("Punjab", "IN-PB", "State"),
+        new("Rajasthan", "IN-RJ", "State"),
+        new("Sikkim", "IN-SK", "State"),
+        new("Tamil Nadu", "IN-TN", "State"),
+        new("Telangana", "IN-TG", "State"),
+        new("Tripura", "IN-TR", "State"),
+        new("Uttar Pradesh", "IN-UP", "State"),
+        new("Uttarakhand", "IN-UT", "State"),
+        new("West Bengal", "IN-WB", "State"),
+        new("Andaman and Nicobar Islands", "IN-AN", "Union Territory"),
+        new("Chandigarh", "IN-CH", "Union Territory"),
+        new("Dadra and Nagar Haveli and Daman and Diu", "IN-DN", "Union Territory"),
+        new("Delhi", "IN-DL", "Union Territory"),
+        new("Jammu and Kashmir", "IN-JK", "Union Territory"),
+        new("Ladakh", "IN-LA", "Union Territory"),
+        new("Lakshadweep", "IN-LD", "Union Territory"),
+        new("Puducherry", "IN-PY", "Union Territory")
+    ];
+
+    [Fact]
+    public void GetCountry_ReturnsCorrectInformation_ForIndia()
+    {
+        // Arrange
+        // Act
+        var country = CountryProvider.GetCountry(EXPECTEDID);
+
+        // Assert
+        AssertCorrectInformation(
+            country,
+            EXPECTEDID,
+            INDIA_COUNTRY_NAME,
+            INDIA_OFFICIAL_NAME,
+            INDIA_NATIVE_NAME,
+            INDIA_CAPITAL,
+            INDIA_NUMERIC_CODE,
+            INDIA_ISO2_CODE,
+            INDIA_ISO3_CODE,
+            INDIA_CALLING_CODE,
+            EXPECTED_STATES
+        );
+    }
+}
diff --git a/src/World.Net.UnitTests/Countries/IndonesiaTest.cs b/src/World.Net.UnitTests/Countries/IndonesiaTest.cs
new file mode 100644
index 0000000..a110d7d
--- /dev/null
+++ b/src/World.Net.UnitTests/Countries/IndonesiaTest.cs
@@ -0,0 +1,75 @@
+namespace World.Net.UnitTests.Countries;
+
+public sealed class IndonesiaTest : AssertCountryTestBase
+{
+    private const string INDONESIA_COUNTRY_NAME = "Indonesia";
+    private const string INDONESIA_NATIVE_NAME = "Indonesia";
+    private const string INDONESIA_CAPITAL = "Jakarta";
+    private const string INDONESIA_OFFICIAL_NAME = "Republic of Indonesia";
+    private const string INDONESIA_ISO2_CODE = "ID";
+    private const string INDONESIA_ISO3_CODE = "IDN";
+    private const int INDONESIA_NUMERIC_CODE = 360;
+    private readonly string[] INDONESIA_CALLING_CODE = ["+62"];
+    private const CountryIdentifier EXPECTEDID = CountryIdentifier.Indonesia;
+
+    private static readonly (string Name, string IsoCode, string Type)[] EXPECTED_STATES =
+    [
+        new("Aceh", "ID-AC", "Special Region"),
+        new("Bali", "ID-BA", "Province"),
+        new("Banten", "ID-BT", "Province"),
+        new("Bengkulu", "ID-BE", "Province"),
+        new("Central Java", "ID-JT", "Province"),
+        new("Central Kalimantan", "ID-KT", "Province"),
+        new("Central Sulawesi", "ID-ST", "Province"),
+        new("East Java", "ID-JI", "Province"),
+        new("East Kalimantan", "ID-KI", "Province"),
+        new("East Nusa Tenggara", "ID-NT", "Province"),
+        new("Gorontalo", "ID-GO", "Province"),
+        new("Jakarta", "ID-JK", "Special Capital Region"),
+        new("Jambi", "ID-JA", "Province"),
+        new("Lampung", "ID-LA", "Province"),
+        new("Maluku", "ID-MA", "Province"),
+        new("North Kalimantan", "ID-KU", "Province"),
+        new("North Maluku", "ID-MU", "Province"),
+        new("North Sulawesi", "ID-SA", "Province"),
+        new("North Sumatra", "ID-SU", "Province"),
+        new("Papua", "ID-PA", "Province"),
+        new("Riau", "ID-RI", "Province"),
+        new("Riau Islands", "ID-KR", "Province"),
+        new("Southeast Sulawesi", "ID-SG", "Province"),
+        new("South Kalimantan", "ID-KS", "Province"),
+        new("South Sulawesi", "ID-SN", "Province"),
+        new("South Sumatra", "ID-SS", "Province"),
+        new("Special Region of Yogyakarta", "ID-YO", "Special Region"),
+        new("West Java", "ID-JB", "Province"),
+        new("West Kalimantan", "ID-KB", "Province"),
+        new("West Nusa Tenggara", "ID-NB", "Province"),
+        new("West Papua", "ID-PA", "Province"),
+        new("West Sulawesi", "ID-SB", "Province"),
+        new("West Sumatra", "ID-SB", "Province"),
+        new("South East Sulawesi", "ID-SG", "Province")
+    ];
+
+    [Fact]
+    public void GetCountry_ReturnsCorrectInformation_ForIndonesia()
+    {
+        // Arrange
+        // Act
+        var country = CountryProvider.GetCountry(EXPECTEDID);
+
+        // Assert
+        AssertCorrectInformation(
+            country,
+            EXPECTEDID,
+            INDONESIA_COUNTRY_NAME,
+            INDONESIA_OFFICIAL_NAME,
+            INDONESIA_NATIVE_NAME,
+            INDONESIA_CAPITAL,
+            INDONESIA_NUMERIC_CODE,
+            INDONESIA_ISO2_CODE,
+            INDONESIA_ISO3_CODE,
+            INDONESIA_CALLING_CODE,
+            EXPECTED_STATES
+        );
+    }
+}
diff --git a/src/World.Net.UnitTests/Countries/IranTest.cs b/src/World.Net.UnitTests/Countries/IranTest.cs
new file mode 100644
index 0000000..4b5f74f
--- /dev/null
+++ b/src/World.Net.UnitTests/Countries/IranTest.cs
@@ -0,0 +1,72 @@
+namespace World.Net.UnitTests.Countries;
+
+public sealed class IranTest : AssertCountryTestBase
+{
+    private const string IRAN_COUNTRY_NAME = "Iran";
+    private const string IRAN_NATIVE_NAME = "ایران";
+    private const string IRAN_CAPITAL = "Tehran";
+    private const string IRAN_OFFICIAL_NAME = "Islamic Republic of Iran";
+    private const string IRAN_ISO2_CODE = "IR";
+    private const string IRAN_ISO3_CODE = "IRN";
+    private const int IRAN_NUMERIC_CODE = 364;
+    private readonly string[] IRAN_CALLING_CODE = ["+98"];
+    private const CountryIdentifier EXPECTEDID = CountryIdentifier.Iran;
+
+    private static readonly (string Name, string IsoCode, string Type)[] EXPECTED_STATES =
+    [
+        new("Alborz", "IR-AL", "Province"),
+        new("Ardabil", "IR-AR", "Province"),
+        new("Bushehr", "IR-BU", "Province"),
+        new("Chaharmahal and Bakhtiari", "IR-CH", "Province"),
+        new("East Azerbaijan", "IR-ES", "Province"),
+        new("Fars", "IR-FA", "Province"),
+        new("Gilan", "IR-GI", "Province"),
+        new("Golestan", "IR-GO", "Province"),
+        new("Hamadan", "IR-HM", "Province"),
+        new("Hormozgan", "IR-HR", "Province"),
+        new("Ilam", "IR-IL", "Province"),
+        new("Isfahan", "IR-IS", "Province"),
+        new("Kerman", "IR-KR", "Province"),
+        new("Kermanshah", "IR-KS", "Province"),
+        new("Khorasan North", "IR-KN", "Province"),
+        new("Khorasan Razavi", "IR-KRZ", "Province"),
+        new("Khorasan South", "IR-KS", "Province"),
+        new("Khuzestan", "IR-KH", "Province"),
+        new("Kohgiluyeh and Boyer-Ahmad", "IR-KB", "Province"),
+        new("Kurdistan", "IR-KD", "Province"),
+        new("Lorestan", "IR-LR", "Province"),
+        new("Markazi", "IR-MK", "Province"),
+        new("Mazandaran", "IR-MZ", "Province"),
+        new("Qazvin", "IR-QZ", "Province"),
+        new("Qom", "IR-QM", "Province"),
+        new("Semnan", "IR-SM", "Province"),
+        new("Sistan and Baluchestan", "IR-SB", "Province"),
+        new("Tehran", "IR-TH", "Province"),
+        new("West Azerbaijan", "IR-WA", "Province"),
+        new("Yazd", "IR-YZ", "Province"),
+        new("Zanjan", "IR-ZN", "Province")
+    ];
+
+    [Fact]
+    public void GetCountry_ReturnsCorrectInformation_ForIran()
+    {
+        // Arrange
+        // Act
+        var country = CountryProvider.GetCountry(EXPECTEDID);
+
+        // Assert
+        AssertCorrectInformation(
+            country,
+            EXPECTEDID,
+            IRAN_COUNTRY_NAME,
+            IRAN_OFFICIAL_NAME,
+            IRAN_NATIVE_NAME,
+            IRAN_CAPITAL,
+            IRAN_NUMERIC_CODE,
+            IRAN_ISO2_CODE,
+            IRAN_ISO3_CODE,
+            IRAN_CALLING_CODE,
+            EXPECTED_STATES
+        );
+    }
+}
diff --git a/src/World.Net/Countries/Hungary.cs b/src/World.Net/Countries/Hungary.cs
new file mode 100644
index 0000000..5c2b19b
--- /dev/null
+++ b/src/World.Net/Countries/Hungary.cs
@@ -0,0 +1,56 @@
+namespace World.Net.Countries;
+
+internal sealed class Hungary : ICountry
+{
+    //<inheritdoc/>
+    public CountryIdentifier Id => CountryIdentifier.Hungary;
+
+    //<inheritdoc/>
+    public string Name { get; } = "Hungary";
+
+    //<inheritdoc/>
+    public string OfficialName { get; } = "Hungary";
+
+    //<inheritdoc/>
+    public string NativeName => "Magyarország";
+
+    //<inheritdoc/>
+    public string Capital { get; } = "Budapest";
+
+    //<inheritdoc/>
+    public int NumericCode { get; } = 348;
+
+    //<inheritdoc/>
+    public string ISO2Code { get; } = "HU";
+
+    //<inheritdoc/>
+    public string ISO3Code { get; } = "HUN";
+
+    //<inheritdoc/>
+    public string[] CallingCode { get; } = ["+36"];
+
+    //<inheritdoc/>
+    public IEnumerable<State> States =>
+    [
+        new("Budapest", "HU-BU", "Capital City"),
+        new("Bács-Kiskun", "HU-BK", "County"),
+        new("Baranya", "HU-BA", "County"),
+        new("Békés", "HU-BE", "County"),
+        new("Borsod-Abaúj-Zemplén", "HU-BO", "County"),
+        new("Csongrád-Csanád", "HU-CS", "County"),
+        new("Fejér", "HU-FE", "County"),
+        new("Győr-Moson-Sopron", "HU-GS", "County"),
+        new("Hajdú-Bihar", "HU-HB", "County"),
+        new("Heves", "HU-HE", "County"),
+        new("Jász-Nagykun-Szolnok", "HU-JN", "County"),
+        new("Komárom-Esztergom", "HU-KM", "County"),
+        new("Nógrád", "HU-NO", "County"),
+        new("Pest", "HU-PE", "County"),
+        new("Somogy", "HU-SO", "County"),
+        new("Szabolcs-Szatmár-Bereg", "HU-SZ", "County"),
+        new("Tolna", "HU-TO", "County"),
+        new("Vas", "HU-VA", "County"),
+        new("Veszprém", "HU-VE", "County"),
+        new("Zala", "HU-ZA", "County")
+    ];
+}
diff --git a/src/World.Net/Countries/Iceland.cs b/src/World.Net/Countries/Iceland.cs
new file mode 100644
index 0000000..134da51
--- /dev/null
+++ b/src/World.Net/Countries/Iceland.cs
@@ -0,0 +1,44 @@
+namespace World.Net.Countries;
+
+internal sealed class Iceland : ICountry
+{
+    //<inheritdoc/>
+    public CountryIdentifier Id => CountryIdentifier.Iceland;
+
+    //<inheritdoc/>
+    public string Name { get; } = "Iceland";
+
+    //<inheritdoc/>
+    public string OfficialName { get; } = "Republic of Iceland";
+
+    //<inheritdoc/>
+    public string NativeName => "Ísland";
+
+    //<inheritdoc/>
+    public string Capital { get; } = "Reykjavík";
+
+    //<inheritdoc/>
+    public int NumericCode { get; } = 352;
+
+    //<inheritdoc/>
+    public string ISO2Code { get; } = "IS";
+
+    //<inheritdoc/>
+    public string ISO3Code { get; } = "ISL";
+
+    //<inheritdoc/>
+    public string[] CallingCode { get; } = ["+354"];
+
+    //<inheritdoc/>
+    public IEnumerable<State> States =>
+    [
+        new("Capital Region", "IS-1", "Region"),
+        new("Southern Peninsula", "IS-2", "Region"),
+        new("West", "IS-3", "Region"),
+        new("Westfjords", "IS-4", "Region"),
+        new("North", "IS-5", "Region"),
+        new("Northwest", "IS-6", "Region"),
+        new("East", "IS-7", "Region"),
+        new("South", "IS-8", "Region")
+    ];
+}
diff --git a/src/World.Net/Countries/India.cs b/src/World.Net/Countries/India.cs
new file mode 100644
index 0000000..77e15ae
--- /dev/null
+++ b/src/World.Net/Countries/India.cs
@@ -0,0 +1,72 @@
+namespace World.Net.Countries;
+
+internal sealed class India : ICountry
+{
+    //<inheritdoc/>
+    public CountryIdentifier Id => CountryIdentifier.India;
+
+    //<inheritdoc/>
+    public string Name { get; } = "India";
+
+    //<inheritdoc/>
+    public string OfficialName { get; } = "Republic of India";
+
+    //<inheritdoc/>
+    public string NativeName => "भारत";
+
+    //<inheritdoc/>
+    public string Capital { get; } = "New Delhi";
+
+    //<inheritdoc/>
+    public int NumericCode { get; } = 356;
+
+    //<inheritdoc/>
+    public string ISO2Code { get; } = "IN";
+
+    //<inheritdoc/>
+    public string ISO3Code { get; } = "IND";
+
+    //<inheritdoc/>
+    public string[] CallingCode { get; } = ["+91"];
+
+    //<inheritdoc/>
+    public IEnumerable<State> States =>
+    [
+        new("Andhra Pradesh", "IN-AP", "State"),
+        new("Arunachal Pradesh", "IN-AR", "State"),
+        new("Assam", "IN-AS", "State"),
+        new("Bihar", "IN-BR", "State"),
+        new("Chhattisgarh", "IN-CT", "State"),
+        new("Goa", "IN-GA", "State"),
+        new("Gujarat", "IN-GJ", "State"),
+        new("Haryana", "IN-HR", "State"),
+        new("Himachal Pradesh", "IN-HP", "State"),
+        new("Jharkhand", "IN-JH", "State"),
+        new("Karnataka", "IN-KA", "State"),
+        new("Kerala", "IN-KL", "State"),
+        new("Madhya Pradesh", "IN-MP", "State"),
+        new("Maharashtra", "IN-MH", "State"),
+        new("Manipur", "IN-MN", "State"),
+        new("Meghalaya", "IN-ML", "State"),
+        new("Mizoram", "IN-MZ", "State"),
+        new("Nagaland", "IN-NL", "State"),
+        new("Odisha", "IN-OR", "State"),
+        new("Punjab", "IN-PB", "State"),
+        new("Rajasthan", "IN-RJ", "State"),
+        new("Sikkim", "IN-SK", "State"),
+        new("Tamil Nadu", "IN-TN", "State"),
+        new("Telangana", "IN-TG", "State"),
+        new("Tripura", "IN-TR", "State"),
+        new("Uttar Pradesh", "IN-UP", "State"),
+        new("Uttarakhand", "IN-UT", "State"),
+        new("West Bengal", "IN-WB", "State"),
+        new("Andaman and Nicobar Islands", "IN-AN", "Union Territory"),
+        new("Chandigarh", "IN-CH", "Union Territory"),
+        new("Dadra and Nagar Haveli and Daman and Diu", "IN-DN", "Union Territory"),
+        new("Delhi", "IN-DL", "Union Territory"),
+        new("Jammu and Kashmir", "IN-JK", "Union Territory"),
+        new("Ladakh", "IN-LA", "Union Territory"),
+        new("Lakshadweep", "IN-LD", "Union Territory"),
+        new("Puducherry", "IN-PY", "Union Territory")
+    ];
+}
diff --git a/src/World.Net/Countries/Indonesia.cs b/src/World.Net/Countries/Indonesia.cs
new file mode 100644
index 0000000..486c71d
--- /dev/null
+++ b/src/World.Net/Countries/Indonesia.cs
@@ -0,0 +1,70 @@
+namespace World.Net.Countries;
+
+internal sealed class Indonesia : ICountry
+{
+    //<inheritdoc/>
+    public CountryIdentifier Id => CountryIdentifier.Indonesia;
+
+    //<inheritdoc/>
+    public string Name { get; } = "Indonesia";
+
+    //<inheritdoc/>
+    public string OfficialName { get; } = "Republic of Indonesia";
+
+    //<inheritdoc/>
+    public string NativeName => "Indonesia";
+
+    //<inheritdoc/>
+    public string Capital { get; } = "Jakarta";
+
+    //<inheritdoc/>
+    public int NumericCode { get; } = 360;
+
+    //<inheritdoc/>
+    public string ISO2Code { get; } = "ID";
+
+    //<inheritdoc/>
+    public string ISO3Code { get; } = "IDN";
+
+    //<inheritdoc/>
+    public string[] CallingCode { get; } = ["+62"];
+
+    //<inheritdoc/>
+    public IEnumerable<State> States =>
+    [
+        new("Aceh", "ID-AC", "Special Region"),
+        new("Bali", "ID-BA", "Province"),
+        new("Banten", "ID-BT", "Province"),
+        new("Bengkulu", "ID-BE", "Province"),
+        new("Central Java", "ID-JT", "Province"),
+        new("Central Kalimantan", "ID-KT", "Province"),
+        new("Central Sulawesi", "ID-ST", "Province"),
+        new("East Java", "ID-JI", "Province"),
+        new("East Kalimantan", "ID-KI", "Province"),
+        new("East Nusa Tenggara", "ID-NT", "Province"),
+        new("Gorontalo", "ID-GO", "Province"),
+        new("Jakarta", "ID-JK", "Special Capital Region"),
+        new("Jambi", "ID-JA", "Province"),
+        new("Lampung", "ID-LA", "Province"),
+        new("Maluku", "ID-MA", "Province"),
+        new("North Kalimantan", "ID-KU", "Province"),
+        new("North Maluku", "ID-MU", "Province"),
+        new("North Sulawesi", "ID-SA", "Province"),
+        new("North Sumatra", "ID-SU", "Province"),
+        new("Papua", "ID-PA", "Province"),
+        new("Riau", "ID-RI", "Province"),
+        new("Riau Islands", "ID-KR", "Province"),
+        new("Southeast Sulawesi", "ID-SG", "Province"),
+        new("South Kalimantan", "ID-KS", "Province"),
+        new("South Sulawesi", "ID-SN", "Province"),
+        new("South Sumatra", "ID-SS", "Province"),
+        new("Special Region of Yogyakarta", "ID-YO", "Special Region"),
+        new("West Java", "ID-JB", "Province"),
+        new("West Kalimantan", "ID-KB", "Province"),
+        new("West Nusa Tenggara", "ID-NB", "Province"),
+        new("West Papua", "ID-PA", "Province"),
+        new("West Sulawesi", "ID-SB", "Province"),
+        new("West Sumatra", "ID-SB", "Province"),
+        new("South East Sulawesi", "ID-SG", "Province")
+    ];
+}
diff --git a/src/World.Net/Countries/Iran.cs b/src/World.Net/Countries/Iran.cs
new file mode 100644
index 0000000..dd4b1b6
--- /dev/null
+++ b/src/World.Net/Countries/Iran.cs
@@ -0,0 +1,68 @@
+namespace World.Net.Countries;
+
+internal sealed class Iran : ICountry
+{
+    //<inheritdoc/>
+    public CountryIdentifier Id => CountryIdentifier.Iran;
+
+    //<inheritdoc/>
+    public string Name { get; } = "Iran";
+
+    //<inheritdoc/>
+    public string OfficialName { get; } = "Islamic Republic of Iran";
+
+    //<inheritdoc/>
+    public string NativeName => "ایران";
+
+    //<inheritdoc/>
+    public string Capital { get; } = "Tehran";
+
+    //<inheritdoc/>
+    public int NumericCode { get; } = 364;
+
+    //<inheritdoc/>
+    public string ISO2Code { get; } = "IR";
+
+    //<inheritdoc/>
+    public string ISO3Code { get; } = "IRN";
+
+    //<inheritdoc/>
+    public string[] CallingCode { get; } = ["+98"];
+
+    //<inheritdoc/>
+    public IEnumerable<State> States =>
+    [
+        new("Alborz", "IR-AL", "Province"),
+        new("Ardabil", "IR-AR", "Province"),
+        new("Bushehr", "IR-BU", "Province"),
+        new("Chaharmahal and Bakhtiari", "IR-CH", "Province"),
+        new("East Azerbaijan", "IR-ES", "Province"),
+        new("Fars", "IR-FA", "Province"),
+        new("Gilan", "IR-GI", "Province"),
+        new("Golestan", "IR-GO", "Province"),
+        new("Hamadan", "IR-HM", "Province"),
+        new("Hormozgan", "IR-HR", "Province"),
+        new("Ilam", "IR-IL", "Province"),
+        new("Isfahan", "IR-IS", "Province"),
+        new("Kerman", "IR-KR", "Province"),
+        new("Kermanshah", "IR-KS", "Province"),
+        new("Khorasan North", "IR-KN", "Province"),
+        new("Khorasan Razavi", "IR-KRZ", "Province"),
+        new("Khorasan South", "IR-KS", "Province"),
+        new("Khuzestan", "IR-KH", "Province"),
+        new("Kohgiluyeh and Boyer-Ahmad", "IR-KB", "Province"),
+        new("Kurdistan", "IR-KD", "Province"),
+        new("Lorestan", "IR-LR", "Province"),
+        new("Markazi", "IR-MK", "Province"),
+        new("Mazandaran", "IR-MZ", "Province"),
+        new("Qazvin", "IR-QZ", "Province"),
+        new("Qom", "IR-QM", "Province"),
+        new("Semnan", "IR-SM", "Province"),
+        new("Sistan and Baluchestan", "IR-SB", "Province"),
+        new("Tehran", "IR-TH", "Province"),
+        new("West Azerbaijan", "IR-WA", "Province"),
+        new("Yazd", "IR-YZ", "Province"),
+        new("Zanjan", "IR-ZN", "Province")
+    ];
+}
+
diff --git a/src/World.Net/Helpers/CountryInitializer.cs b/src/World.Net/Helpers/CountryInitializer.cs
index 10f312d..f27693b 100644
--- a/src/World.Net/Helpers/CountryInitializer.cs
+++ b/src/World.Net/Helpers/CountryInitializer.cs
@@ -103,6 +103,11 @@ public static Dictionary<CountryIdentifier, ICountry> Initialize()
             { CountryIdentifier.HeardIslandAndMcDonaldIslands, new HeardIslandAndMcDonaldIslands() },
             { CountryIdentifier.Honduras, new Honduras() },
             { CountryIdentifier.HongKongSAR, new HongKong() },
+            { CountryIdentifier.Hungary, new Hungary() },
+            { CountryIdentifier.Iceland, new Iceland() },
+            { CountryIdentifier.India, new India() },
+            { CountryIdentifier.Indonesia, new Indonesia() },
+            { CountryIdentifier.Iran, new Iran() },
             { CountryIdentifier.Iraq, new Iraq() },
             { CountryIdentifier.Ireland, new Ireland() },
             { CountryIdentifier.Israel, new Israel() },