diff --git a/src/cpp/ripple/LedgerMaster.cpp b/src/cpp/ripple/LedgerMaster.cpp
index 4d4920f746..9a7ef20742 100644
--- a/src/cpp/ripple/LedgerMaster.cpp
+++ b/src/cpp/ripple/LedgerMaster.cpp
@@ -141,6 +141,22 @@ bool LedgerMaster::haveLedger(uint32 seq)
 	return mCompleteLedgers.hasValue(seq);
 }
 
+bool LedgerMaster::getValidatedRange(uint32& minVal, uint32& maxVal)
+{
+	boost::recursive_mutex::scoped_lock sl(mLock);
+	if (!mValidLedger)
+		return false;
+	maxVal = mValidLedger->getLedgerSeq();
+	if (maxVal == 0)
+		return false;
+	minVal = mCompleteLedgers.prevMissing(maxVal);
+	if (minVal == RangeSet::RangeSetAbsent)
+		minVal = 0;
+	else
+		++minVal;
+	return true;
+}
+
 void LedgerMaster::asyncAccept(Ledger::pointer ledger)
 {
 	uint32 seq = ledger->getLedgerSeq();
diff --git a/src/cpp/ripple/LedgerMaster.h b/src/cpp/ripple/LedgerMaster.h
index d2dc0c2d57..6c9d87122b 100644
--- a/src/cpp/ripple/LedgerMaster.h
+++ b/src/cpp/ripple/LedgerMaster.h
@@ -143,6 +143,7 @@ public:
 
 	bool haveLedgerRange(uint32 from, uint32 to);
 	bool haveLedger(uint32 seq);
+	bool getValidatedRange(uint32& minVal, uint32& maxVal);
 
 	void resumeAcquiring();
 
diff --git a/src/cpp/ripple/NetworkOPs.h b/src/cpp/ripple/NetworkOPs.h
index 3047aa1391..55fe7de453 100644
--- a/src/cpp/ripple/NetworkOPs.h
+++ b/src/cpp/ripple/NetworkOPs.h
@@ -175,6 +175,7 @@ public:
 	bool isValidated(uint32 seq);
 	bool isValidated(uint32 seq, const uint256& hash);
 	bool isValidated(Ledger::ref l) { return isValidated(l->getLedgerSeq(), l->getHash()); }
+	bool getValidatedRange(uint32& minVal, uint32& maxVal) { return mLedgerMaster->getValidatedRange(minVal, maxVal); }
 
 	SerializedValidation::ref getLastValidation()			{ return mLastValidation; }
 	void setLastValidation(SerializedValidation::ref v)		{ mLastValidation = v; }