diff --git a/include/sta/ClkNetwork.hh b/include/sta/ClkNetwork.hh
index 9175abd3..c08e9f1b 100644
--- a/include/sta/ClkNetwork.hh
+++ b/include/sta/ClkNetwork.hh
@@ -39,9 +39,11 @@ public:
   void ensureClkNetwork();
   void clear();
   bool isClock(const Pin *pin) const;
+  bool isClock(const Net *net) const;
   bool isIdealClock(const Pin *pin) const;
   const ClockSet *clocks(const Pin *pin);
   const ClockSet *idealClocks(const Pin *pin);
+  const PinSet *pins(const Clock *clk);
   void clkPinsInvalid();
 
 protected:
diff --git a/include/sta/Sta.hh b/include/sta/Sta.hh
index d971af89..8ade548f 100644
--- a/include/sta/Sta.hh
+++ b/include/sta/Sta.hh
@@ -1146,11 +1146,12 @@ public:
   ////////////////////////////////////////////////////////////////
 
   void ensureClkNetwork();
-  // Assumes ensureClkNetwork() has been called.
-  bool isClock(Pin *pin) const;
-  // Assumes ensureClkNetwork() has been called.
-  bool isIdealClock(Pin *pin) const;
   void clkPinsInvalid();
+  // The following functions assume ensureClkNetwork() has been called.
+  bool isClock(const Pin *pin) const;
+  bool isClock(const Net *net) const;
+  bool isIdealClock(const Pin *pin) const;
+  const PinSet *pins(const Clock *clk);
 
   ////////////////////////////////////////////////////////////////
 
diff --git a/search/ClkNetwork.cc b/search/ClkNetwork.cc
index 4c9a08a2..ca8073ba 100644
--- a/search/ClkNetwork.cc
+++ b/search/ClkNetwork.cc
@@ -146,6 +146,22 @@ ClkNetwork::isClock(const Pin *pin) const
   return pin_clks_map_.hasKey(pin);
 }
 
+bool
+ClkNetwork::isClock(const Net *net) const
+{
+  bool is_clk = false;
+  NetConnectedPinIterator *pin_iter = network_->pinIterator(net);
+  while (pin_iter->hasNext()) {
+    Pin *pin = pin_iter->next();
+    if (isClock(pin)) {
+      is_clk = true;
+      break;
+    }
+  }
+  delete pin_iter;
+  return is_clk;
+}
+
 bool
 ClkNetwork::isIdealClock(const Pin *pin) const
 {
@@ -170,4 +186,13 @@ ClkNetwork::idealClocks(const Pin *pin)
     return nullptr;
 }
 
+const PinSet *
+ClkNetwork::pins(const Clock *clk)
+{
+  if (clk_pins_map_.hasKey(clk))
+    return &clk_pins_map_[clk];
+  else
+    return nullptr;
+}
+
 } // namespace
diff --git a/search/Sta.cc b/search/Sta.cc
index 99ed8039..6701b277 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -5272,17 +5272,29 @@ Sta::ensureClkNetwork()
 }
 
 bool
-Sta::isClock(Pin *pin) const
+Sta::isClock(const Pin *pin) const
 {
   return clk_network_->isClock(pin);
 }
 
 bool
-Sta::isIdealClock(Pin *pin) const
+Sta::isClock(const Net *net) const
+{
+  return clk_network_->isClock(net);
+}
+
+bool
+Sta::isIdealClock(const Pin *pin) const
 {
   return clk_network_->isIdealClock(pin);
 }
 
+const PinSet *
+Sta::pins(const Clock *clk)
+{
+  return clk_network_->pins(clk);
+}
+
 void
 Sta::clkPinsInvalid()
 {