diff --git a/src/evo/specialtx_validation.cpp b/src/evo/specialtx_validation.cpp
index c2d6e2b0297b2e..ab86745f01a505 100644
--- a/src/evo/specialtx_validation.cpp
+++ b/src/evo/specialtx_validation.cpp
@@ -20,7 +20,7 @@
 
 /* -- Helper static functions -- */
 
-static bool CheckService(const CService& addr, CValidationState& state)
+bool CheckService(const CService& addr, CValidationState& state)
 {
     if (!addr.IsValid()) {
         return state.DoS(10, false, REJECT_INVALID, "bad-protx-ipaddr");
diff --git a/src/evo/specialtx_validation.h b/src/evo/specialtx_validation.h
index eb49d2b0676e8f..3a3c89aa8de644 100644
--- a/src/evo/specialtx_validation.h
+++ b/src/evo/specialtx_validation.h
@@ -20,6 +20,9 @@ class uint256;
 /** The maximum allowed size of the extraPayload (for any TxType) */
 static const unsigned int MAX_SPECIALTX_EXTRAPAYLOAD = 10000;
 
+/** Operator service validity checks */
+bool CheckService(const CService& addr, CValidationState& state);
+
 /** Payload validity checks (including duplicate unique properties against list at pindexPrev)*/
 // Note: for +v2, if the tx is not a special tx, this method returns true.
 // Note2: This function only performs extra payload related checks, it does NOT checks regular inputs and outputs.
diff --git a/src/interfaces/tiertwo.cpp b/src/interfaces/tiertwo.cpp
index d3d2c93a5805c3..21d8f36fe4428f 100644
--- a/src/interfaces/tiertwo.cpp
+++ b/src/interfaces/tiertwo.cpp
@@ -7,6 +7,8 @@
 #include "bls/key_io.h"
 #include "evo/deterministicmns.h"
 #include "optional.h"
+#include "netbase.h"
+#include "evo/specialtx_validation.h" // For CheckService
 #include "validation.h"
 #include "wallet/wallet.h"
 
@@ -20,6 +22,23 @@ bool TierTwo::isBlsPubKeyValid(const std::string& blsKey)
     return opKey && opKey->IsValid();
 }
 
+OperationResult TierTwo::isServiceValid(const std::string& serviceStr)
+{
+    if (serviceStr.empty()) return false;
+    const auto& params = Params();
+    CService service;
+    if (!Lookup(serviceStr, service, params.GetDefaultPort(), false)) {
+        return {false, strprintf("invalid network address %s", serviceStr)};
+    }
+
+    CValidationState state;
+    if (!CheckService(service, state)) {
+        return {false, state.GetRejectReason()};
+    }
+    // All good
+    return {true};
+}
+
 Optional<DMNData> TierTwo::getDMNData(const uint256& pro_tx_hash, const CBlockIndex* tip)
 {
     if (!tip) return nullopt;
diff --git a/src/interfaces/tiertwo.h b/src/interfaces/tiertwo.h
index 934e5dbc0c8ab4..0b0a7f81f77c9f 100644
--- a/src/interfaces/tiertwo.h
+++ b/src/interfaces/tiertwo.h
@@ -5,6 +5,7 @@
 #ifndef PIVX_INTERFACES_TIERTWO_H
 #define PIVX_INTERFACES_TIERTWO_H
 
+#include "operationresult.h"
 #include "sync.h"
 #include "uint256.h"
 #include "validationinterface.h"
@@ -59,6 +60,9 @@ class TierTwo : public CValidationInterface {
     // Return true if the bls key is valid
     bool isBlsPubKeyValid(const std::string& blsKey);
 
+    // Verifies the operator service address validity
+    OperationResult isServiceValid(const std::string& serviceStr);
+
     // Return the DMNs that this wallet "owns".
     // future: add filter to return by owner, operator, voter or a combination of them.
     std::vector<std::shared_ptr<DMNView>> getKnownDMNs() { return WITH_LOCK(cs_cache, return m_cached_dmns;); };
diff --git a/src/qt/pivx/masternodewizarddialog.cpp b/src/qt/pivx/masternodewizarddialog.cpp
index fc5f4426ae3310..85d41964429a17 100644
--- a/src/qt/pivx/masternodewizarddialog.cpp
+++ b/src/qt/pivx/masternodewizarddialog.cpp
@@ -286,6 +286,7 @@ void MasterNodeWizardDialog::accept()
                 isOk = createMN();
                 QDialog::accept();
             } else {
+                if (!validateService()) return; // invalid state informed internally
                 // Ask if the user want to customize the owner, operator and voter addresses and keys
                 // if not, the process will generate all the values for them and present them in the summary page.
                 isWaitingForAsk = true;
@@ -517,6 +518,12 @@ bool MasterNodeWizardDialog::createMN()
     return true;
 }
 
+bool MasterNodeWizardDialog::validateService()
+{
+    auto opRes = interfaces::g_tiertwo->isServiceValid(ui->lineEditIpAddress->text().toStdString());
+    return opRes ? true : errorOut(tr(opRes.getError().c_str()));
+}
+
 bool MasterNodeWizardDialog::validateOwner()
 {
     QString ownerAddress(ui->lineEditOwnerAddress->text());
diff --git a/src/qt/pivx/masternodewizarddialog.h b/src/qt/pivx/masternodewizarddialog.h
index 8a8a942c6e1d1d..0429f047a1d2f8 100644
--- a/src/qt/pivx/masternodewizarddialog.h
+++ b/src/qt/pivx/masternodewizarddialog.h
@@ -117,6 +117,7 @@ private Q_SLOTS:
     void moveToNextPage(int currentPos, int nextPos);
     void moveBack(int backPos);
 
+    bool validateService();
     bool validateVoter();
     bool validateOwner();
     bool validateOperator();