diff --git a/src/core/meshcop/dataset.cpp b/src/core/meshcop/dataset.cpp
index 9ee0bb4c2..5d9a02877 100644
--- a/src/core/meshcop/dataset.cpp
+++ b/src/core/meshcop/dataset.cpp
@@ -83,7 +83,7 @@ Error Dataset::Info::GenerateRandom(Instance &aInstance)
     SuccessOrExit(error = Random::Crypto::FillBuffer(mExtendedPanId.m8, sizeof(mExtendedPanId.m8)));
     SuccessOrExit(error = AsCoreType(&mMeshLocalPrefix).GenerateRandomUla());
 
-    snprintf(mNetworkName.m8, sizeof(mNetworkName), "OpenThread-%04x", mPanId);
+    snprintf(mNetworkName.m8, sizeof(mNetworkName), "%s-%04x", NetworkName::kNetworkNameInit, mPanId);
 
     mComponents.mIsActiveTimestampPresent = true;
     mComponents.mIsNetworkKeyPresent      = true;
diff --git a/src/core/meshcop/network_name.cpp b/src/core/meshcop/network_name.cpp
index 4e0fe4895..431663123 100644
--- a/src/core/meshcop/network_name.cpp
+++ b/src/core/meshcop/network_name.cpp
@@ -40,12 +40,6 @@
 namespace ot {
 namespace MeshCoP {
 
-const char NetworkNameManager::sNetworkNameInit[] = "OpenThread";
-
-#if (OPENTHREAD_CONFIG_THREAD_VERSION >= OT_THREAD_VERSION_1_2)
-const char NetworkNameManager::sDomainNameInit[] = "DefaultDomain";
-#endif
-
 uint8_t NameData::CopyTo(char *aBuffer, uint8_t aMaxSize) const
 {
     MutableData<kWithUint8Length> destData;
@@ -114,10 +108,10 @@ bool NetworkName::operator==(const NetworkName &aOther) const { return GetAsData
 NetworkNameManager::NetworkNameManager(Instance &aInstance)
     : InstanceLocator(aInstance)
 {
-    IgnoreError(SetNetworkName(sNetworkNameInit));
+    IgnoreError(SetNetworkName(NetworkName::kNetworkNameInit));
 
 #if (OPENTHREAD_CONFIG_THREAD_VERSION >= OT_THREAD_VERSION_1_2)
-    IgnoreError(SetDomainName(sDomainNameInit));
+    IgnoreError(SetDomainName(NetworkName::kDomainNameInit));
 #endif
 }
 
diff --git a/src/core/meshcop/network_name.hpp b/src/core/meshcop/network_name.hpp
index 1f6d84786..d376fc5cd 100644
--- a/src/core/meshcop/network_name.hpp
+++ b/src/core/meshcop/network_name.hpp
@@ -107,6 +107,9 @@ public:
 class NetworkName : public otNetworkName, public Unequatable<NetworkName>
 {
 public:
+    static constexpr const char *kNetworkNameInit = "OpenThread";
+    static constexpr const char *kDomainNameInit  = "DefaultDomain";
+
     /**
      * This constant specified the maximum number of chars in Network Name (excludes null char).
      *
@@ -262,9 +265,6 @@ public:
 private:
     Error SignalNetworkNameChange(Error aError);
 
-    static const char sNetworkNameInit[];
-    static const char sDomainNameInit[];
-
     NetworkName mNetworkName;
 
 #if (OPENTHREAD_CONFIG_THREAD_VERSION >= OT_THREAD_VERSION_1_2)