diff --git a/include/openthread/types.h b/include/openthread/types.h
index a683b517f..fae567c68 100644
--- a/include/openthread/types.h
+++ b/include/openthread/types.h
@@ -1007,6 +1007,8 @@ typedef struct otBufferInfo
     uint16_t mCoapBuffers;            ///< The number of buffers in the CoAP send queue.
     uint16_t mCoapSecureMessages;     ///< The number of messages in the CoAP secure send queue.
     uint16_t mCoapSecureBuffers;      ///< The number of buffers in the CoAP secure send queue.
+    uint16_t mApplicationCoapMessages;///< The number of messages in the application CoAP send queue.
+    uint16_t mApplicationCoapBuffers; ///< The number of buffers in the application CoAP send queue.
 } otBufferInfo;
 
 /**
diff --git a/src/cli/cli.cpp b/src/cli/cli.cpp
index 5a266fbb6..721612e27 100644
--- a/src/cli/cli.cpp
+++ b/src/cli/cli.cpp
@@ -441,6 +441,8 @@ void Interpreter::ProcessBufferInfo(int argc, char *argv[])
     mServer->OutputFormat("arp: %d %d\r\n", bufferInfo.mArpMessages, bufferInfo.mArpBuffers);
     mServer->OutputFormat("coap: %d %d\r\n", bufferInfo.mCoapMessages, bufferInfo.mCoapBuffers);
     mServer->OutputFormat("coap secure: %d %d\r\n", bufferInfo.mCoapSecureMessages, bufferInfo.mCoapSecureBuffers);
+    mServer->OutputFormat("application coap: %d %d\r\n", bufferInfo.mApplicationCoapMessages,
+                          bufferInfo.mApplicationCoapBuffers);
 
     AppendResult(OT_ERROR_NONE);
 }
diff --git a/src/core/api/message_api.cpp b/src/core/api/message_api.cpp
index d104594bb..d1e5a1742 100644
--- a/src/core/api/message_api.cpp
+++ b/src/core/api/message_api.cpp
@@ -152,6 +152,8 @@ exit:
 
 void otMessageGetBufferInfo(otInstance *aInstance, otBufferInfo *aBufferInfo)
 {
+    uint16_t messages, buffers;
+
     aBufferInfo->mTotalBuffers = OPENTHREAD_CONFIG_NUM_MESSAGE_BUFFERS;
 
     aBufferInfo->mFreeBuffers = aInstance->mMessagePool.GetFreeBufferCount();
@@ -176,4 +178,18 @@ void otMessageGetBufferInfo(otInstance *aInstance, otBufferInfo *aBufferInfo)
 
     aInstance->mThreadNetif.GetCoap().GetRequestMessages().GetInfo(aBufferInfo->mCoapMessages,
                                                                    aBufferInfo->mCoapBuffers);
+    aInstance->mThreadNetif.GetCoap().GetCachedResponses().GetInfo(messages, buffers);
+    aBufferInfo->mCoapMessages += messages;
+    aBufferInfo->mCoapBuffers += buffers;
+
+#if OPENTHREAD_ENABLE_APPLICATION_COAP
+    aInstance->mApplicationCoap.GetRequestMessages().GetInfo(aBufferInfo->mApplicationCoapMessages,
+                                                             aBufferInfo->mApplicationCoapBuffers);
+    aInstance->mApplicationCoap.GetCachedResponses().GetInfo(messages, buffers);
+    aBufferInfo->mApplicationCoapMessages += messages;
+    aBufferInfo->mApplicationCoapBuffers += buffers;
+#else
+    aBufferInfo->mApplicationCoapMessages = 0;
+    aBufferInfo->mApplicationCoapBuffers = 0;
+#endif
 }