diff --git a/AK/URL.h b/AK/URL.h
index 6b75d1239d..98955b2ef6 100644
--- a/AK/URL.h
+++ b/AK/URL.h
@@ -54,6 +54,22 @@ public:
     {
     }
 
+    // https://url.spec.whatwg.org/#concept-ipv4
+    // An IPv4 address is a 32-bit unsigned integer that identifies a network address. [RFC791]
+    // FIXME: It would be nice if this were an AK::IPv4Address
+    using IPv4Address = u32;
+
+    // https://url.spec.whatwg.org/#concept-ipv6
+    // An IPv6 address is a 128-bit unsigned integer that identifies a network address. For the purposes of this standard
+    // it is represented as a list of eight 16-bit unsigned integers, also known as IPv6 pieces. [RFC4291]
+    // FIXME: It would be nice if this were an AK::IPv6Address
+    using IPv6Address = Array<u16, 8>;
+
+    // https://url.spec.whatwg.org/#concept-host
+    // A host is a domain, an IP address, an opaque host, or an empty host. Typically a host serves as a network address,
+    // but it is sometimes used as opaque identifier in URLs where a network address is not necessary.
+    using Host = Variant<IPv4Address, IPv6Address, String, Empty>;
+
     bool is_valid() const { return m_valid; }
 
     enum class ApplyPercentDecoding {
diff --git a/AK/URLParser.cpp b/AK/URLParser.cpp
index 9e818aaaae..7570d714f0 100644
--- a/AK/URLParser.cpp
+++ b/AK/URLParser.cpp
@@ -121,7 +121,7 @@ static Optional<ParsedIPv4Number> parse_ipv4_number(StringView input)
 }
 
 // https://url.spec.whatwg.org/#concept-ipv4-parser
-static Optional<u32> parse_ipv4_address(StringView input)
+static Optional<URL::IPv4Address> parse_ipv4_address(StringView input)
 {
     // 1. Let parts be the result of strictly splitting input on U+002E (.).
     auto parts = input.split_view("."sv, SplitBehavior::KeepEmpty);
@@ -201,7 +201,7 @@ static Optional<u32> parse_ipv4_address(StringView input)
 }
 
 // https://url.spec.whatwg.org/#concept-ipv4-serializer
-static ErrorOr<String> serialize_ipv4_address(u32 address)
+static ErrorOr<String> serialize_ipv4_address(URL::IPv4Address address)
 {
     // 1. Let output be the empty string.
     // NOTE: Array to avoid prepend.
@@ -227,7 +227,7 @@ static ErrorOr<String> serialize_ipv4_address(u32 address)
 }
 
 // https://url.spec.whatwg.org/#concept-ipv6-serializer
-static ErrorOr<String> serialize_ipv6_address(Array<u16, 8> const& address)
+static ErrorOr<String> serialize_ipv6_address(URL::IPv6Address const& address)
 {
     // 1. Let output be the empty string.
     StringBuilder output;
@@ -290,7 +290,7 @@ static ErrorOr<String> serialize_ipv6_address(Array<u16, 8> const& address)
 }
 
 // https://url.spec.whatwg.org/#concept-ipv6-parser
-static Optional<Array<u16, 8>> parse_ipv6_address(StringView input)
+static Optional<URL::IPv6Address> parse_ipv6_address(StringView input)
 {
     // 1. Let address be a new IPv6 address whose IPv6 pieces are all 0.
     Array<u16, 8> address {};