diff --git a/tests/auto/network/access/qhttpnetworkconnection/tst_qhttpnetworkconnection.cpp b/tests/auto/network/access/qhttpnetworkconnection/tst_qhttpnetworkconnection.cpp
index 8e0090e486..b793df674b 100644
--- a/tests/auto/network/access/qhttpnetworkconnection/tst_qhttpnetworkconnection.cpp
+++ b/tests/auto/network/access/qhttpnetworkconnection/tst_qhttpnetworkconnection.cpp
@@ -303,7 +303,7 @@ void tst_QHttpNetworkConnection::put_data()
 
     QTest::newRow("success-internal") << "http://" << QtNetworkSettings::serverName() << "/dav/file1.txt" << ushort(80) << false << "Hello World\nEnd of file\n"<<true;
     QTest::newRow("fail-internal") << "http://" << QtNetworkSettings::serverName() << "/dav2/file1.txt" << ushort(80) << false << "Hello World\nEnd of file\n"<<false;
-    QTest::newRow("fail-host") << "http://" << "fluke-nosuchhost.troll.no" << "/dav2/file1.txt" << ushort(80) << false << "Hello World\nEnd of file\n"<<false;
+    QTest::newRow("fail-host") << "http://" << "invalid.test.qt-project.org" << "/dav2/file1.txt" << ushort(80) << false << "Hello World\nEnd of file\n"<<false;
 }
 
 void tst_QHttpNetworkConnection::put()
diff --git a/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp b/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
index 8e13c1de6e..c883b77ea8 100644
--- a/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
+++ b/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
@@ -1835,7 +1835,7 @@ void tst_QNetworkReply::getErrors_data()
             << int(QNetworkReply::ProtocolUnknownError) << 0 << true;
 
     // file: errors
-    QTest::newRow("file-host") << "file://this-host-doesnt-exist.troll.no/foo.txt"
+    QTest::newRow("file-host") << "file://invalid.test.qt-project.org/foo.txt"
 #if !defined Q_OS_WIN
                                << int(QNetworkReply::ProtocolInvalidOperationError) << 0 << true;
 #else
@@ -1856,7 +1856,7 @@ void tst_QNetworkReply::getErrors_data()
                                           << int(QNetworkReply::ContentAccessDenied) << 0 << true;
 
     // ftp: errors
-    QTest::newRow("ftp-host") << "ftp://this-host-doesnt-exist.troll.no/foo.txt"
+    QTest::newRow("ftp-host") << "ftp://invalid.test.qt-project.org/foo.txt"
                               << int(QNetworkReply::HostNotFoundError) << 0 << true;
     QTest::newRow("ftp-no-path") << "ftp://" + QtNetworkSettings::serverName()
                                  << int(QNetworkReply::ContentOperationNotPermittedError) << 0 << true;
@@ -1870,7 +1870,7 @@ void tst_QNetworkReply::getErrors_data()
                                << int(QNetworkReply::ContentNotFoundError) << 0 << true;
 
     // http: errors
-    QTest::newRow("http-host") << "http://this-host-will-never-exist.troll.no/"
+    QTest::newRow("http-host") << "http://invalid.test.qt-project.org/"
                                << int(QNetworkReply::HostNotFoundError) << 0 << true;
     QTest::newRow("http-exist") << "http://" + QtNetworkSettings::serverName() + "/this-file-doesnt-exist.txt"
                                 << int(QNetworkReply::ContentNotFoundError) << 404 << false;
diff --git a/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp b/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
index 10b41ced9e..f01d79d9bc 100644
--- a/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
+++ b/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
@@ -660,7 +660,7 @@ void tst_QTcpServer::invalidProxy_data()
                                 << int(QAbstractSocket::UnsupportedSocketOperationError);
 
     QTest::newRow("no-such-host") << int(QNetworkProxy::Socks5Proxy)
-                                  << "this-host-will-never-exist.troll.no" << 1080
+                                  << "invalid.test.qt-project.org" << 1080
                                   << int(QAbstractSocket::ProxyNotFoundError);
     QTest::newRow("socks5-on-http") << int(QNetworkProxy::Socks5Proxy) << fluke << 3128
                                     << int(QAbstractSocket::SocketTimeoutError);