diff --git a/genesis/builder/builder.go b/genesis/builder/builder.go
index a6df655c35..98d4ce00c8 100644
--- a/genesis/builder/builder.go
+++ b/genesis/builder/builder.go
@@ -58,6 +58,9 @@ var (
 	ZChainAliases = AliasesFor("Z")
 	GChainAliases = AliasesFor("G")
 	KChainAliases = AliasesFor("K")
+	IChainAliases = AliasesFor("I")
+	OChainAliases = AliasesFor("O")
+	RChainAliases = AliasesFor("R")
 
 	// Network-specific genesis messages (Latin for mainnet, descriptive for others)
 	// Mainnet: "Lux et Libertas" - Light and Liberty
@@ -861,6 +864,36 @@ func Aliases(genesisBytes []byte) (map[string][]string, map[ids.ID][]string, err
 				path.Join(constants.ChainAliasPrefix, "kms"),
 			}
 			chainAliases[chainID] = KChainAliases
+		case constants.IdentityVMID:
+			apiAliases[endpoint] = []string{
+				"I",
+				"identity",
+				"identityvm",
+				"id",
+				path.Join(constants.ChainAliasPrefix, "I"),
+				path.Join(constants.ChainAliasPrefix, "identity"),
+			}
+			chainAliases[chainID] = IChainAliases
+		case constants.OracleVMID:
+			apiAliases[endpoint] = []string{
+				"O",
+				"oracle",
+				"oraclevm",
+				"feed",
+				path.Join(constants.ChainAliasPrefix, "O"),
+				path.Join(constants.ChainAliasPrefix, "oracle"),
+			}
+			chainAliases[chainID] = OChainAliases
+		case constants.RelayVMID:
+			apiAliases[endpoint] = []string{
+				"R",
+				"relay",
+				"relayvm",
+				"msg",
+				path.Join(constants.ChainAliasPrefix, "R"),
+				path.Join(constants.ChainAliasPrefix, "relay"),
+			}
+			chainAliases[chainID] = RChainAliases
 		}
 	}
 	return apiAliases, chainAliases, nil
diff --git a/genesis/builder/registry.go b/genesis/builder/registry.go
index 4717ca144b..20027e3e11 100644
--- a/genesis/builder/registry.go
+++ b/genesis/builder/registry.go
@@ -66,6 +66,9 @@ var Registry = []ChainSpec{
 	{Letter: "Z", VMID: constants.ZKVMID, Aliases: []string{"zk", "zkvm"}, Name: "Z-Chain"},
 	{Letter: "G", VMID: constants.GraphVMID, Aliases: []string{"graph", "graphvm", "dgraph"}, Name: "G-Chain"},
 	{Letter: "K", VMID: constants.KeyVMID, Aliases: []string{"key", "keyvm"}, Name: "K-Chain"},
+	{Letter: "I", VMID: constants.IdentityVMID, Aliases: []string{"identity", "identityvm", "id"}, Name: "I-Chain"},
+	{Letter: "O", VMID: constants.OracleVMID, Aliases: []string{"oracle", "oraclevm", "feed"}, Name: "O-Chain"},
+	{Letter: "R", VMID: constants.RelayVMID, Aliases: []string{"relay", "relayvm", "msg"}, Name: "R-Chain"},
 }
 
 // specsByLetter is an O(1) lookup built once at package init.
diff --git a/genesis/builder/registry_test.go b/genesis/builder/registry_test.go
index 370bc13f69..036d8d7c8f 100644
--- a/genesis/builder/registry_test.go
+++ b/genesis/builder/registry_test.go
@@ -45,6 +45,9 @@ func TestChainAliasesRegistryParity(t *testing.T) {
 		{"Z", ZChainAliases, []string{"Z", "zk", "zkvm"}},
 		{"G", GChainAliases, []string{"G", "graph", "graphvm", "dgraph"}},
 		{"K", KChainAliases, []string{"K", "key", "keyvm"}},
+		{"I", IChainAliases, []string{"I", "identity", "identityvm", "id"}},
+		{"O", OChainAliases, []string{"O", "oracle", "oraclevm", "feed"}},
+		{"R", RChainAliases, []string{"R", "relay", "relayvm", "msg"}},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -73,6 +76,9 @@ func TestVMAliasesRegistryParity(t *testing.T) {
 		constants.ZKVMID:        {"zkvm", "zk"},
 		constants.GraphVMID:     {"graphvm", "graph", "dgraph"},
 		constants.KeyVMID:       {"keyvm", "key"},
+		constants.IdentityVMID:  {"identity", "identityvm", "id"},
+		constants.OracleVMID:    {"oracle", "oraclevm", "feed"},
+		constants.RelayVMID:     {"relay", "relayvm", "msg"},
 		secp256k1fx.ID:          {"secp256k1fx"},
 		nftfx.ID:                {"nftfx"},
 		propertyfx.ID:           {"propertyfx"},