diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index c16680e4453f..dd695bbb99c4 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -282,6 +282,7 @@
 #include "nsHTMLTags.h"
 #include "NodeUbiReporting.h"
 #include "nsICookieService.h"
+#include "mozilla/net/RequestContextService.h"
 
 using namespace mozilla;
 using namespace mozilla::dom;
@@ -2340,7 +2341,7 @@ nsIDocument::ResetToURI(nsIURI* aURI,
       // Inform the associated request context about this load start so
       // any of its internal load progress flags gets reset.
       nsCOMPtr<nsIRequestContextService> rcsvc =
-        do_GetService("@mozilla.org/network/request-context-service;1");
+        mozilla::net::RequestContextService::GetOrCreate();
       if (rcsvc) {
         nsCOMPtr<nsIRequestContext> rc;
         rcsvc->GetRequestContextFromLoadGroup(aLoadGroup, getter_AddRefs(rc));
diff --git a/netwerk/base/RequestContextService.cpp b/netwerk/base/RequestContextService.cpp
index 9cdb2f071d67..a0ae99b615e5 100644
--- a/netwerk/base/RequestContextService.cpp
+++ b/netwerk/base/RequestContextService.cpp
@@ -15,8 +15,10 @@
 #include "RequestContextService.h"
 
 #include "mozilla/Atomics.h"
+#include "mozilla/ClearOnShutdown.h"
 #include "mozilla/Logging.h"
 #include "mozilla/Services.h"
+#include "mozilla/StaticPtr.h"
 #include "mozilla/TimeStamp.h"
 
 #include "mozilla/net/NeckoChild.h"
@@ -32,6 +34,8 @@ LazyLogModule gRequestContextLog("RequestContext");
 #undef LOG
 #define LOG(args) MOZ_LOG(gRequestContextLog, LogLevel::Info, args)
 
+static StaticRefPtr<RequestContextService> gSingleton;
+
 // This is used to prevent adding tail pending requests after shutdown
 static bool sShutdown = false;
 
@@ -518,19 +522,23 @@ RequestContextService::Shutdown()
   sShutdown = true;
 }
 
-/* static */ nsresult
-RequestContextService::Create(nsISupports *aOuter, const nsIID& aIID, void **aResult)
+/* static */ already_AddRefed<nsIRequestContextService>
+RequestContextService::GetOrCreate()
 {
   MOZ_ASSERT(NS_IsMainThread());
-  if (aOuter != nullptr) {
-    return NS_ERROR_NO_AGGREGATION;
+
+  RefPtr<RequestContextService> svc;
+  if (gSingleton) {
+    svc = gSingleton;
+  } else {
+    svc = new RequestContextService();
+    nsresult rv = svc->Init();
+    NS_ENSURE_SUCCESS(rv, nullptr);
+    gSingleton = svc;
+    ClearOnShutdown(&gSingleton);
   }
 
-  RefPtr<RequestContextService> svc = new RequestContextService();
-  nsresult rv = svc->Init();
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  return svc->QueryInterface(aIID, aResult);
+  return svc.forget();
 }
 
 NS_IMETHODIMP
diff --git a/netwerk/base/RequestContextService.h b/netwerk/base/RequestContextService.h
index 87918ab1e78f..b619bb7993c7 100644
--- a/netwerk/base/RequestContextService.h
+++ b/netwerk/base/RequestContextService.h
@@ -24,14 +24,14 @@ public:
   NS_DECL_NSIREQUESTCONTEXTSERVICE
   NS_DECL_NSIOBSERVER
 
+  static already_AddRefed<nsIRequestContextService> GetOrCreate();
+
+private:
   RequestContextService();
+  virtual ~RequestContextService();
 
   nsresult Init();
   void Shutdown();
-  static nsresult Create(nsISupports *outer, const nsIID& iid, void **result);
-
-private:
-  virtual ~RequestContextService();
 
   static RequestContextService *sSelf;
 
diff --git a/netwerk/base/moz.build b/netwerk/base/moz.build
index 7b4f41ad0763..a45b08ee9202 100644
--- a/netwerk/base/moz.build
+++ b/netwerk/base/moz.build
@@ -177,6 +177,7 @@ EXPORTS.mozilla.net += [
     'Predictor.h',
     'RedirectChannelRegistrar.h',
     'ReferrerPolicy.h',
+    'RequestContextService.h',
     'SimpleChannelParent.h',
     'TCPFastOpen.h',
 ]
diff --git a/netwerk/base/nsLoadGroup.cpp b/netwerk/base/nsLoadGroup.cpp
index 75d8c9570f65..ae1502a29285 100644
--- a/netwerk/base/nsLoadGroup.cpp
+++ b/netwerk/base/nsLoadGroup.cpp
@@ -21,6 +21,7 @@
 #include "nsIRequestContext.h"
 #include "CacheObserver.h"
 #include "MainThreadUtils.h"
+#include "RequestContextService.h"
 #include "mozilla/Unused.h"
 
 namespace mozilla {
@@ -1056,7 +1057,7 @@ nsresult nsLoadGroup::MergeDefaultLoadFlags(nsIRequest *aRequest,
 
 nsresult nsLoadGroup::Init()
 {
-    mRequestContextService = do_GetService("@mozilla.org/network/request-context-service;1");
+    mRequestContextService = RequestContextService::GetOrCreate();
     if (mRequestContextService) {
         Unused << mRequestContextService->NewRequestContext(getter_AddRefs(mRequestContext));
     }
diff --git a/netwerk/build/nsNetCID.h b/netwerk/build/nsNetCID.h
index 5d6838045a96..cc2fb5177706 100644
--- a/netwerk/build/nsNetCID.h
+++ b/netwerk/build/nsNetCID.h
@@ -485,17 +485,6 @@
   { 0x92, 0x05, 0xc3, 0x09, 0xce, 0xb2, 0xd6, 0x41 } \
 }
 
-// service implementing nsIRequestContextService
-#define NS_REQUESTCONTEXTSERVICE_CONTRACTID \
-    "@mozilla.org/network/request-context-service;1"
-#define NS_REQUESTCONTEXTSERVICE_CID \
-{ /* d5499fa7-7ba8-49ff-9e30-1858b99ace69 */ \
-    0xd5499fa7, \
-    0x7ba8, \
-    0x49ff, \
-    {0x93, 0x30, 0x18, 0x58, 0xb9, 0x9a, 0xce, 0x69} \
-}
-
 /******************************************************************************
  * netwerk/cache/ classes
  */
diff --git a/netwerk/build/nsNetModule.cpp b/netwerk/build/nsNetModule.cpp
index 4399a536489a..d0878344b316 100644
--- a/netwerk/build/nsNetModule.cpp
+++ b/netwerk/build/nsNetModule.cpp
@@ -148,10 +148,6 @@ namespace net {
 } // namespace net
 } // namespace mozilla
 
-#include "RequestContextService.h"
-typedef mozilla::net::RequestContextService RequestContextService;
-NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(RequestContextService, Init)
-
 ///////////////////////////////////////////////////////////////////////////////
 
 extern nsresult
@@ -754,7 +750,6 @@ NS_DEFINE_NAMED_CID(NS_CACHE_STORAGE_SERVICE_CID);
 NS_DEFINE_NAMED_CID(NS_NSILOADCONTEXTINFOFACTORY_CID);
 NS_DEFINE_NAMED_CID(NS_NETWORKPREDICTOR_CID);
 NS_DEFINE_NAMED_CID(NS_CAPTIVEPORTAL_CID);
-NS_DEFINE_NAMED_CID(NS_REQUESTCONTEXTSERVICE_CID);
 #ifdef BUILD_NETWORK_INFO_SERVICE
 NS_DEFINE_NAMED_CID(NETWORKINFOSERVICE_CID);
 #endif // BUILD_NETWORK_INFO_SERVICE
@@ -872,7 +867,6 @@ static const mozilla::Module::CIDEntry kNeckoCIDs[] = {
     { &kNS_NSILOADCONTEXTINFOFACTORY_CID, false, nullptr, LoadContextInfoFactoryConstructor },
     { &kNS_NETWORKPREDICTOR_CID, false, nullptr, mozilla::net::Predictor::Create },
     { &kNS_CAPTIVEPORTAL_CID, false, nullptr, mozilla::net::nsICaptivePortalServiceConstructor },
-    { &kNS_REQUESTCONTEXTSERVICE_CID, false, nullptr, RequestContextServiceConstructor },
 #ifdef BUILD_NETWORK_INFO_SERVICE
     { &kNETWORKINFOSERVICE_CID, false, nullptr, nsNetworkInfoServiceConstructor },
 #endif
@@ -990,7 +984,6 @@ static const mozilla::Module::ContractIDEntry kNeckoContracts[] = {
     { NS_NSILOADCONTEXTINFOFACTORY_CONTRACTID, &kNS_NSILOADCONTEXTINFOFACTORY_CID },
     { NS_NETWORKPREDICTOR_CONTRACTID, &kNS_NETWORKPREDICTOR_CID },
     { NS_CAPTIVEPORTAL_CONTRACTID, &kNS_CAPTIVEPORTAL_CID },
-    { NS_REQUESTCONTEXTSERVICE_CONTRACTID, &kNS_REQUESTCONTEXTSERVICE_CID },
 #ifdef BUILD_NETWORK_INFO_SERVICE
     { NETWORKINFOSERVICE_CONTRACT_ID, &kNETWORKINFOSERVICE_CID },
 #endif
diff --git a/netwerk/ipc/NeckoParent.cpp b/netwerk/ipc/NeckoParent.cpp
index 1e5254dafd00..1d97630965e3 100644
--- a/netwerk/ipc/NeckoParent.cpp
+++ b/netwerk/ipc/NeckoParent.cpp
@@ -26,6 +26,7 @@
 #include "mozilla/net/DNSRequestParent.h"
 #include "mozilla/net/ChannelDiverterParent.h"
 #include "mozilla/net/IPCTransportProvider.h"
+#include "mozilla/net/RequestContextService.h"
 #include "mozilla/net/TrackingDummyChannelParent.h"
 #ifdef MOZ_WEBRTC
 #include "mozilla/net/StunAddrsRequestParent.h"
@@ -898,7 +899,7 @@ mozilla::ipc::IPCResult
 NeckoParent::RecvRequestContextLoadBegin(const uint64_t& rcid)
 {
   nsCOMPtr<nsIRequestContextService> rcsvc =
-    do_GetService("@mozilla.org/network/request-context-service;1");
+    RequestContextService::GetOrCreate();
   if (!rcsvc) {
     return IPC_OK();
   }
@@ -915,7 +916,7 @@ mozilla::ipc::IPCResult
 NeckoParent::RecvRequestContextAfterDOMContentLoaded(const uint64_t& rcid)
 {
   nsCOMPtr<nsIRequestContextService> rcsvc =
-    do_GetService("@mozilla.org/network/request-context-service;1");
+    RequestContextService::GetOrCreate();
   if (!rcsvc) {
     return IPC_OK();
   }
@@ -932,7 +933,7 @@ mozilla::ipc::IPCResult
 NeckoParent::RecvRemoveRequestContext(const uint64_t& rcid)
 {
   nsCOMPtr<nsIRequestContextService> rcsvc =
-    do_GetService("@mozilla.org/network/request-context-service;1");
+    RequestContextService::GetOrCreate();
   if (!rcsvc) {
     return IPC_OK();
   }
diff --git a/netwerk/protocol/http/nsHttpHandler.cpp b/netwerk/protocol/http/nsHttpHandler.cpp
index 319e4968a855..7db464841c26 100644
--- a/netwerk/protocol/http/nsHttpHandler.cpp
+++ b/netwerk/protocol/http/nsHttpHandler.cpp
@@ -61,6 +61,7 @@
 
 #include "mozilla/net/NeckoChild.h"
 #include "mozilla/net/NeckoParent.h"
+#include "mozilla/net/RequestContextService.h"
 #include "mozilla/ipc/URIUtils.h"
 #include "mozilla/Telemetry.h"
 #include "mozilla/Unused.h"
@@ -510,8 +511,7 @@ nsHttpHandler::Init()
     rv = InitConnectionMgr();
     if (NS_FAILED(rv)) return rv;
 
-    mRequestContextService =
-        do_GetService("@mozilla.org/network/request-context-service;1");
+    mRequestContextService = RequestContextService::GetOrCreate();
 
 #if defined(ANDROID)
     mProductSub.AssignLiteral(MOZILLA_UAVERSION);