diff --git a/.changeset/big-steaks-give.md b/.changeset/big-steaks-give.md
new file mode 100644
index 000000000..f60cad5a6
--- /dev/null
+++ b/.changeset/big-steaks-give.md
@@ -0,0 +1,5 @@
+---
+"@livekit/protocol": patch
+---
+
+Add SIPHostnamePrefix
diff --git a/utils/guid/id.go b/utils/guid/id.go
index 9f3e92c71..6a3447ccb 100644
--- a/utils/guid/id.go
+++ b/utils/guid/id.go
@@ -49,6 +49,7 @@ const (
 	WHIPResourcePrefix      = "WH_"
 	RTMPResourcePrefix      = "RT_"
 	URLResourcePrefix       = "UR_"
+	SIPHostnamePrefix       = "SH"
 	AgentPrefix             = "A_"
 	AgentWorkerPrefix       = "AW_"
 	AgentJobPrefix          = "AJ_"
diff --git a/utils/id.go b/utils/id.go
index bb96c0fee..5f914d0c3 100644
--- a/utils/id.go
+++ b/utils/id.go
@@ -39,6 +39,7 @@ const (
 	WHIPResourcePrefix      = guid.WHIPResourcePrefix
 	RTMPResourcePrefix      = guid.RTMPResourcePrefix
 	URLResourcePrefix       = guid.URLResourcePrefix
+	SIPHostnamePrefix       = guid.SIPHostnamePrefix
 	AgentWorkerPrefix       = guid.AgentWorkerPrefix
 	AgentJobPrefix          = guid.AgentJobPrefix
 	AgentDispatchPrefix     = guid.AgentDispatchPrefix