diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.cpp
index 253c74a3b9..38996a453f 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.cpp
@@ -9,7 +9,7 @@
 #include <AK/StringBuilder.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#collect-an-http-quoted-string
 String collect_an_http_quoted_string(GenericLexer& lexer, HttpQuotedStringExtractValue extract_value)
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.h
index ded5f21e69..e3abd60062 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP.h
@@ -10,7 +10,7 @@
 #include <AK/Forward.h>
 #include <AK/StringView.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#http-tab-or-space
 // An HTTP tab or space is U+0009 TAB or U+0020 SPACE.
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
index 2c9932ab7f..98c7cb91cd 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
@@ -6,7 +6,7 @@
 
 #include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 Body::Body(ReadableStreamDummy stream)
     : m_stream(stream)
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h
index 4665ba09e4..424023b6c1 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h
@@ -13,7 +13,7 @@
 #include <AK/Variant.h>
 #include <LibWeb/FileAPI/Blob.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-body
 class Body final {
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp
index f28018e17e..d2b3fb4549 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp
@@ -16,7 +16,7 @@
 #include <LibWeb/Infra/ByteSequences.h>
 #include <LibWeb/MimeSniff/MimeType.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 template<typename T>
 requires(IsSameIgnoringCV<T, u8>) struct CaseInsensitiveBytesTraits : public Traits<Span<T>> {
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h
index 6973e04c0e..3040c5706b 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h
@@ -14,7 +14,7 @@
 #include <AK/String.h>
 #include <AK/Vector.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-header
 // A header is a tuple that consists of a name (a header name) and value (a header value).
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.cpp
index 4f62e896f1..ec877a73a8 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.cpp
@@ -11,7 +11,7 @@
 #include <LibWeb/Fetch/Infrastructure/HTTP/Methods.h>
 #include <LibWeb/Infra/ByteSequences.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-method
 bool is_method(ReadonlyBytes method)
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.h
index 4b77d3d5f7..1258616a60 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.h
@@ -8,7 +8,7 @@
 
 #include <AK/Forward.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 [[nodiscard]] bool is_method(ReadonlyBytes);
 [[nodiscard]] bool is_cors_safelisted_method(ReadonlyBytes);
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp
index bd53ad510e..bffcf88a2e 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp
@@ -7,7 +7,7 @@
 #include <AK/Array.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-request-url
 AK::URL const& Request::url() const
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h
index 16f1b5873e..bdd10a63dc 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h
@@ -20,7 +20,7 @@
 #include <LibWeb/HTML/PolicyContainers.h>
 #include <LibWeb/HTML/Scripting/Environments.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-request
 class Request final {
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
index 2eb6ec4152..33d614023e 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
@@ -6,7 +6,7 @@
 
 #include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#ref-for-concept-network-error%E2%91%A3
 // A network error is a response whose status is always 0, status message is always
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h
index 58b21e4891..2ab0fafbcd 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h
@@ -16,7 +16,7 @@
 #include <LibWeb/Fetch/Infrastructure/HTTP/Headers.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Statuses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-response
 class Response {
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.cpp
index 5bf1d0a702..09ed783a56 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.cpp
@@ -8,7 +8,7 @@
 #include <AK/Array.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Statuses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#null-body-status
 bool is_null_body_status(Status status)
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.h
index 7815f2e144..22ea181628 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.h
@@ -8,7 +8,7 @@
 
 #include <AK/Forward.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-status
 // A status is an integer in the range 0 to 999, inclusive.
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.cpp
index 34ab04bef9..9ed3612763 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.cpp
@@ -6,7 +6,7 @@
 
 #include <LibWeb/Fetch/Infrastructure/URL.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#is-local
 bool is_local_url(AK::URL const& url)
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.h b/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.h
index d235577398..17d2497148 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.h
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/URL.h
@@ -9,7 +9,7 @@
 #include <AK/Array.h>
 #include <AK/URL.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#local-scheme
 // A local scheme is "about", "blob", or "data".
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index efd9620f68..219a57d8ac 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -170,7 +170,7 @@ namespace Web::Encoding {
 class TextEncoder;
 }
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 class Body;
 struct Header;
 class HeaderList;
diff --git a/Userland/Libraries/LibWeb/MimeSniff/MimeType.cpp b/Userland/Libraries/LibWeb/MimeSniff/MimeType.cpp
index 7d3d7fcf64..83c74b3454 100644
--- a/Userland/Libraries/LibWeb/MimeSniff/MimeType.cpp
+++ b/Userland/Libraries/LibWeb/MimeSniff/MimeType.cpp
@@ -54,7 +54,7 @@ static bool contains_only_http_token_code_points(StringView string)
 Optional<MimeType> MimeType::from_string(StringView string)
 {
     // 1. Remove any leading and trailing HTTP whitespace from input.
-    auto trimmed_string = string.trim(Fetch::HTTP_WHITESPACE, TrimMode::Both);
+    auto trimmed_string = string.trim(Fetch::Infrastructure::HTTP_WHITESPACE, TrimMode::Both);
 
     // 2. Let position be a position variable for input, initially pointing at the start of input.
     GenericLexer lexer(trimmed_string);
@@ -77,7 +77,7 @@ Optional<MimeType> MimeType::from_string(StringView string)
     auto subtype = lexer.consume_until(';');
 
     // 8. Remove any trailing HTTP whitespace from subtype.
-    subtype = subtype.trim(Fetch::HTTP_WHITESPACE, TrimMode::Right);
+    subtype = subtype.trim(Fetch::Infrastructure::HTTP_WHITESPACE, TrimMode::Right);
 
     // 9. If subtype is the empty string or does not solely contain HTTP token code points, then return failure.
     if (subtype.is_empty() || !contains_only_http_token_code_points(subtype))
@@ -92,7 +92,7 @@ Optional<MimeType> MimeType::from_string(StringView string)
         lexer.ignore(1);
 
         // 2. Collect a sequence of code points that are HTTP whitespace from input given position.
-        lexer.ignore_while(is_any_of(Fetch::HTTP_WHITESPACE));
+        lexer.ignore_while(is_any_of(Fetch::Infrastructure::HTTP_WHITESPACE));
 
         // 3. Let parameterName be the result of collecting a sequence of code points that are not U+003B (;) or U+003D (=) from input, given position.
         auto parameter_name = lexer.consume_until([](char ch) {
@@ -124,7 +124,7 @@ Optional<MimeType> MimeType::from_string(StringView string)
         // 8. If the code point at position within input is U+0022 ("), then:
         if (lexer.peek() == '"') {
             // 1. Set parameterValue to the result of collecting an HTTP quoted string from input, given position and the extract-value flag.
-            parameter_value = Fetch::collect_an_http_quoted_string(lexer, Fetch::HttpQuotedStringExtractValue::Yes);
+            parameter_value = Fetch::Infrastructure::collect_an_http_quoted_string(lexer, Fetch::Infrastructure::HttpQuotedStringExtractValue::Yes);
 
             // 2. Collect a sequence of code points that are not U+003B (;) from input, given position.
             // NOTE: This uses the predicate version as the ignore_until(char) version will also ignore the ';'.
@@ -139,7 +139,7 @@ Optional<MimeType> MimeType::from_string(StringView string)
             parameter_value = lexer.consume_until(';');
 
             // 2. Remove any trailing HTTP whitespace from parameterValue.
-            parameter_value = parameter_value.trim(Fetch::HTTP_WHITESPACE, TrimMode::Right);
+            parameter_value = parameter_value.trim(Fetch::Infrastructure::HTTP_WHITESPACE, TrimMode::Right);
 
             // 3. If parameterValue is the empty string, then continue.
             if (parameter_value.is_empty())
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index 8e972779bb..69d86de233 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -203,9 +203,9 @@ MimeSniff::MimeType XMLHttpRequest::get_response_mime_type() const
 {
     // 1. Let mimeType be the result of extracting a MIME type from xhr’s response’s header list.
     // FIXME: Use an actual HeaderList for XHR headers.
-    Fetch::HeaderList header_list;
+    Fetch::Infrastructure::HeaderList header_list;
     for (auto const& entry : m_response_headers) {
-        auto header = Fetch::Header {
+        auto header = Fetch::Infrastructure::Header {
             .name = MUST(ByteBuffer::copy(entry.key.bytes())),
             .value = MUST(ByteBuffer::copy(entry.value.bytes())),
         };
@@ -257,7 +257,7 @@ Optional<StringView> XMLHttpRequest::get_final_encoding() const
 
 // https://fetch.spec.whatwg.org/#concept-header-extract-mime-type
 // FIXME: This is not only used by XHR, it is also used for multiple things in Fetch.
-Optional<MimeSniff::MimeType> XMLHttpRequest::extract_mime_type(Fetch::HeaderList const& header_list) const
+Optional<MimeSniff::MimeType> XMLHttpRequest::extract_mime_type(Fetch::Infrastructure::HeaderList const& header_list) const
 {
     // 1. Let charset be null.
     Optional<String> charset;
@@ -313,13 +313,13 @@ Optional<MimeSniff::MimeType> XMLHttpRequest::extract_mime_type(Fetch::HeaderLis
 
 // https://fetch.spec.whatwg.org/#concept-bodyinit-extract
 // FIXME: The parameter 'body_init' should be 'typedef (ReadableStream or XMLHttpRequestBodyInit) BodyInit'. For now we just let it be 'XMLHttpRequestBodyInit'.
-static Fetch::BodyWithType extract_body(XMLHttpRequestBodyInit const& body_init)
+static Fetch::Infrastructure::BodyWithType extract_body(XMLHttpRequestBodyInit const& body_init)
 {
     // FIXME: 1. Let stream be object if object is a ReadableStream object. Otherwise, let stream be a new ReadableStream, and set up stream.
-    Fetch::Body::ReadableStreamDummy stream {};
+    Fetch::Infrastructure::Body::ReadableStreamDummy stream {};
     // FIXME: 2. Let action be null.
     // 3. Let source be null.
-    Fetch::Body::SourceType source {};
+    Fetch::Infrastructure::Body::SourceType source {};
     // 4. Let length be null.
     Optional<u64> length {};
     // 5. Let type be null.
@@ -356,7 +356,7 @@ static Fetch::BodyWithType extract_body(XMLHttpRequestBodyInit const& body_init)
     // FIXME: 8. If action is non-null, then run these steps in in parallel:
 
     // 9. Let body be a body whose stream is stream, source is source, and length is length.
-    auto body = Fetch::Body { move(stream), move(source), move(length) };
+    auto body = Fetch::Infrastructure::Body { move(stream), move(source), move(length) };
     // 10. Return (body, type).
     return { .body = move(body), .type = move(type) };
 }
@@ -376,16 +376,16 @@ DOM::ExceptionOr<void> XMLHttpRequest::set_request_header(String const& name_str
         return DOM::InvalidStateError::create("XHR send() flag is already set");
 
     // 3. Normalize value.
-    value = MUST(Fetch::normalize_header_value(value));
+    value = MUST(Fetch::Infrastructure::normalize_header_value(value));
 
     // 4. If name is not a header name or value is not a header value, then throw a "SyntaxError" DOMException.
-    if (!Fetch::is_header_name(name))
+    if (!Fetch::Infrastructure::is_header_name(name))
         return DOM::SyntaxError::create("Header name contains invalid characters.");
-    if (!Fetch::is_header_value(value))
+    if (!Fetch::Infrastructure::is_header_value(value))
         return DOM::SyntaxError::create("Header value contains invalid characters.");
 
     // 5. If name is a forbidden header name, then return.
-    if (Fetch::is_forbidden_header_name(name))
+    if (Fetch::Infrastructure::is_forbidden_header_name(name))
         return {};
 
     // 6. Combine (name, value) in this’s author request headers.
@@ -423,15 +423,15 @@ DOM::ExceptionOr<void> XMLHttpRequest::open(String const& method_string, String
         return DOM::InvalidStateError::create("Invalid state: Responsible document is not fully active.");
 
     // 3. If method is not a method, then throw a "SyntaxError" DOMException.
-    if (!Fetch::is_method(method))
+    if (!Fetch::Infrastructure::is_method(method))
         return DOM::SyntaxError::create("An invalid or illegal string was specified.");
 
     // 4. If method is a forbidden method, then throw a "SecurityError" DOMException.
-    if (Fetch::is_forbidden_method(method))
+    if (Fetch::Infrastructure::is_forbidden_method(method))
         return DOM::SecurityError::create("Forbidden method, must not be 'CONNECT', 'TRACE', or 'TRACK'");
 
     // 5. Normalize method.
-    method = MUST(Fetch::normalize_method(method));
+    method = MUST(Fetch::Infrastructure::normalize_method(method));
 
     // 6. Let parsedURL be the result of parsing url with settingsObject’s API base URL and settingsObject’s API URL character encoding.
     auto parsed_url = settings_object.api_base_url().complete_url(url);
@@ -500,7 +500,7 @@ DOM::ExceptionOr<void> XMLHttpRequest::send(Optional<XMLHttpRequestBodyInit> bod
     if (m_method.is_one_of("GET"sv, "HEAD"sv))
         body = {};
 
-    auto body_with_type = body.has_value() ? extract_body(body.value()) : Optional<Fetch::BodyWithType> {};
+    auto body_with_type = body.has_value() ? extract_body(body.value()) : Optional<Fetch::Infrastructure::BodyWithType> {};
 
     AK::URL request_url = m_window->associated_document().parse_url(m_url.to_string());
     dbgln("XHR send from {} to {}", m_window->associated_document().url(), request_url);
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
index 1429860661..365ce296dd 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
@@ -55,7 +55,7 @@ public:
     using RefCounted::unref;
 
     ReadyState ready_state() const { return m_ready_state; };
-    Fetch::Status status() const { return m_status; };
+    Fetch::Infrastructure::Status status() const { return m_status; };
     DOM::ExceptionOr<String> response_text() const;
     DOM::ExceptionOr<JS::Value> response();
     Bindings::XMLHttpRequestResponseType response_type() const { return m_response_type; }
@@ -84,7 +84,7 @@ private:
     virtual JS::Object* create_wrapper(JS::GlobalObject&) override;
 
     void set_ready_state(ReadyState);
-    void set_status(Fetch::Status status) { m_status = status; }
+    void set_status(Fetch::Infrastructure::Status status) { m_status = status; }
     void fire_progress_event(String const&, u64, u64);
 
     MimeSniff::MimeType get_response_mime_type() const;
@@ -93,14 +93,14 @@ private:
 
     String get_text_response() const;
 
-    Optional<MimeSniff::MimeType> extract_mime_type(Fetch::HeaderList const& header_list) const;
+    Optional<MimeSniff::MimeType> extract_mime_type(Fetch::Infrastructure::HeaderList const& header_list) const;
 
     explicit XMLHttpRequest(HTML::Window&);
 
     NonnullRefPtr<HTML::Window> m_window;
 
     ReadyState m_ready_state { ReadyState::Unsent };
-    Fetch::Status m_status { 0 };
+    Fetch::Infrastructure::Status m_status { 0 };
     bool m_send { false };
     u32 m_timeout { 0 };