diff --git a/container/attributes.go b/container/attributes.go
index 1d7c94a..12277ed 100644
--- a/container/attributes.go
+++ b/container/attributes.go
@@ -4,9 +4,6 @@ package container
 const SysAttributePrefix = "__SYSTEM__"
 
 const (
-	// SysAttributeSubnet is a string ID of container's storage subnet.
-	SysAttributeSubnet = SysAttributePrefix + "SUBNET"
-
 	// SysAttributeName is a string of human-friendly container name registered as the domain in NNS contract.
 	SysAttributeName = SysAttributePrefix + "NAME"
 
@@ -22,10 +19,6 @@ const (
 const SysAttributePrefixNeoFS = "__NEOFS__"
 
 const (
-	// SysAttributeSubnetNeoFS is a string ID of container's storage subnet.
-	// Deprecated: use SysAttributeSubnet
-	SysAttributeSubnetNeoFS = SysAttributePrefixNeoFS + "SUBNET"
-
 	// SysAttributeNameNeoFS is a string of human-friendly container name registered as the domain in NNS contract.
 	// Deprecated: use SysAttributeName
 	SysAttributeNameNeoFS = SysAttributePrefixNeoFS + "NAME"
diff --git a/container/grpc/types.pb.go b/container/grpc/types.pb.go
index 7f0cc1b..0cd53eb 100644
Binary files a/container/grpc/types.pb.go and b/container/grpc/types.pb.go differ
diff --git a/netmap/attributes.go b/netmap/attributes.go
deleted file mode 100644
index 205376b..0000000
--- a/netmap/attributes.go
+++ /dev/null
@@ -1,232 +0,0 @@
-package netmap
-
-import (
-	"errors"
-	"fmt"
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
-)
-
-// prefix of keys to subnet attributes.
-const attrSubnetPrefix = "__SYSTEM__SUBNET_"
-
-// prefix of keys to subnet attributes.
-// Deprecated: use attrSubnetPrefix
-const attrSubnetPrefixNeoFS = "__NEOFS__SUBNET_"
-
-const (
-	// subnet attribute's value denoting subnet entry
-	attrSubnetValEntry = "True"
-
-	// subnet attribute's value denoting subnet exit
-	attrSubnetValExit = "False"
-)
-
-// NodeSubnetInfo groups information about subnet which can be written to NodeInfo.
-//
-// Zero value represents entry to zero subnet.
-type NodeSubnetInfo struct {
-	exit bool
-
-	id *refs.SubnetID
-}
-
-// Enabled returns true iff subnet membership is enabled for the node.
-func (x NodeSubnetInfo) Enabled() bool {
-	return !x.exit
-}
-
-// SetEntryFlag sets the subnet entry flag.
-func (x *NodeSubnetInfo) SetEntryFlag(enters bool) {
-	x.exit = !enters
-}
-
-// ID returns identifier of the subnet.
-func (x NodeSubnetInfo) ID() *refs.SubnetID {
-	return x.id
-}
-
-// SetID sets identifier of the subnet.
-func (x *NodeSubnetInfo) SetID(id *refs.SubnetID) {
-	x.id = id
-}
-
-func subnetAttributeKey(id *refs.SubnetID) string {
-	txt, _ := id.MarshalText() // never returns an error
-
-	return attrSubnetPrefix + string(txt)
-}
-
-// WriteSubnetInfo writes NodeSubnetInfo to NodeInfo via attributes. NodeInfo must not be nil.
-//
-// Existing subnet attributes are expected to be key-unique, otherwise undefined behavior.
-//
-// Does not add (removes existing) attribute if node:
-//   - disables non-zero subnet;
-//   - enables zero subnet.
-//
-// Attribute key is calculated from ID using format `__SYSTEM__SUBNET_%s`.
-// Attribute Value is:
-//   - `True` if node enters the subnet;
-//   - `False`, otherwise.
-func WriteSubnetInfo(node *NodeInfo, info NodeSubnetInfo) {
-	attrs := node.GetAttributes()
-
-	id := info.ID()
-	enters := info.Enabled()
-
-	// calculate attribute key
-	key := subnetAttributeKey(id)
-
-	if refs.IsZeroSubnet(id) == enters {
-		for i := range attrs {
-			if attrs[i].GetKey() == key {
-				attrs = append(attrs[:i], attrs[i+1:]...)
-				break // attributes are expected to be key-unique
-			}
-		}
-	} else {
-		var val string
-
-		if enters {
-			val = attrSubnetValEntry
-		} else {
-			val = attrSubnetValExit
-		}
-
-		presented := false
-
-		for i := range attrs {
-			if attrs[i].GetKey() == key {
-				attrs[i].SetValue(val)
-				presented = true
-			}
-		}
-
-		if !presented {
-			index := len(attrs)
-			attrs = append(attrs, Attribute{})
-			attrs[index].SetKey(key)
-			attrs[index].SetValue(val)
-		}
-	}
-
-	node.SetAttributes(attrs)
-}
-
-// ErrRemoveSubnet is returned when a node needs to leave the subnet.
-var ErrRemoveSubnet = errors.New("remove subnet")
-
-var errNoSubnets = errors.New("no subnets")
-
-// IterateSubnets iterates over all subnets the node belongs to and passes the IDs to f.
-// Handler must not be nil.
-//
-// Subnet attributes are expected to be key-unique, otherwise undefined behavior.
-//
-// If f returns ErrRemoveSubnet, then removes subnet entry. Note that this leads to an instant mutation of NodeInfo.
-// Breaks on any other non-nil error and returns it.
-//
-// Returns an error if any subnet attribute has wrong format.
-// Returns an error if the node is not included in any subnet by the end of the loop.
-func IterateSubnets(node *NodeInfo, f func(refs.SubnetID) error) error {
-	attrs := node.GetAttributes()
-
-	var (
-		err     error
-		id      refs.SubnetID
-		entries uint
-
-		zeroEntry = true
-	)
-
-	for i := 0; i < len(attrs); i++ { // range must not be used because of attrs mutation in body
-		key := attrs[i].GetKey()
-
-		// cut subnet ID string
-		idTxt := strings.TrimPrefix(key, attrSubnetPrefix)
-		if len(idTxt) == len(key) {
-			idTxt = strings.TrimPrefix(key, attrSubnetPrefixNeoFS)
-			if len(idTxt) == len(key) {
-				// not a subnet attribute
-				continue
-			}
-		}
-
-		// check value
-		val := attrs[i].GetValue()
-		if val != attrSubnetValExit && val != attrSubnetValEntry {
-			return fmt.Errorf("invalid attribute value: %s", val)
-		}
-
-		// decode subnet ID
-		if err = id.UnmarshalText([]byte(idTxt)); err != nil {
-			return fmt.Errorf("invalid ID text: %w", err)
-		}
-
-		// update status of zero subnet
-		isZero := refs.IsZeroSubnet(&id)
-
-		if isZero {
-			zeroEntry = val == attrSubnetValEntry
-		}
-
-		// continue to process only the subnets to which the node belongs
-		if val == attrSubnetValExit {
-			continue
-		}
-
-		// pass ID to the handler
-		err = f(id)
-
-		isRemoveErr := errors.Is(err, ErrRemoveSubnet)
-
-		if err != nil && !isRemoveErr {
-			return err
-		}
-
-		if isRemoveErr {
-			if isZero {
-				// we can't remove attribute of zero subnet because it means entry
-				attrs[i].SetValue(attrSubnetValExit)
-			} else {
-				// we can set False or remove attribute, latter is more memory/network efficient.
-				attrs = append(attrs[:i], attrs[i+1:]...)
-				i--
-			}
-
-			continue
-		}
-
-		entries++
-	}
-
-	if zeroEntry {
-		// missing attribute of zero subnet equivalent to entry
-		refs.MakeZeroSubnet(&id)
-
-		err = f(id)
-		if err != nil {
-			if !errors.Is(err, ErrRemoveSubnet) {
-				return err
-			}
-
-			// zero subnet should be clearly removed with False value
-			index := len(attrs)
-			attrs = append(attrs, Attribute{})
-			attrs[index].SetKey(subnetAttributeKey(&id))
-			attrs[index].SetValue(attrSubnetValExit)
-		} else {
-			entries++
-		}
-	}
-
-	if entries <= 0 {
-		return errNoSubnets
-	}
-
-	node.SetAttributes(attrs)
-
-	return nil
-}
diff --git a/netmap/attributes_test.go b/netmap/attributes_test.go
deleted file mode 100644
index 1a340bd..0000000
--- a/netmap/attributes_test.go
+++ /dev/null
@@ -1,361 +0,0 @@
-package netmap_test
-
-import (
-	"strconv"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap"
-	netmaptest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap/test"
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
-	"github.com/stretchr/testify/require"
-)
-
-func subnetAttrKey(val string) string {
-	return "__SYSTEM__SUBNET_" + val
-}
-
-func assertSubnetAttrKey(t *testing.T, attr *netmap.Attribute, num uint32) {
-	require.Equal(t, subnetAttrKey(strconv.FormatUint(uint64(num), 10)), attr.GetKey())
-}
-
-func BenchmarkNodeAttributes(b *testing.B) {
-	const size = 50
-
-	id := new(refs.SubnetID)
-	id.SetValue(12)
-
-	attrs := make([]netmap.Attribute, size)
-	for i := range attrs {
-		if i == size/2 {
-			attrs[i] = *netmaptest.GenerateAttribute(false)
-		} else {
-			data, err := id.MarshalText()
-			require.NoError(b, err)
-
-			attrs[i].SetKey(subnetAttrKey(string(data)))
-			attrs[i].SetValue("True")
-		}
-	}
-
-	var info netmap.NodeSubnetInfo
-	info.SetID(id)
-	info.SetEntryFlag(false)
-
-	node := new(netmap.NodeInfo)
-
-	// When using a single slice `StartTimer` overhead is comparable to the
-	// function execution time, so we reduce this cost by updating slices in groups.
-	const cacheSize = 1000
-	a := make([][]netmap.Attribute, cacheSize)
-	for i := range a {
-		a[i] = make([]netmap.Attribute, size)
-	}
-
-	b.ResetTimer()
-	b.ReportAllocs()
-	for i := 0; i < b.N; i++ {
-		if i%cacheSize == 0 {
-			b.StopTimer()
-			for j := range a {
-				copy(a[j], attrs)
-			}
-			b.StartTimer()
-		}
-		node.SetAttributes(a[i%cacheSize])
-		netmap.WriteSubnetInfo(node, info)
-		if len(node.GetAttributes())+1 != len(attrs) {
-			b.FailNow()
-		}
-	}
-}
-
-func TestWriteSubnetInfo(t *testing.T) {
-	t.Run("entry", func(t *testing.T) {
-		t.Run("zero subnet", func(t *testing.T) {
-			var (
-				node netmap.NodeInfo
-				info netmap.NodeSubnetInfo
-			)
-
-			netmap.WriteSubnetInfo(&node, info)
-
-			// entry to zero subnet does not require an attribute
-			attrs := node.GetAttributes()
-			require.Empty(t, attrs)
-
-			// exit the subnet
-			info.SetEntryFlag(false)
-
-			netmap.WriteSubnetInfo(&node, info)
-
-			// exit from zero subnet should be clearly reflected in attributes
-			attrs = node.GetAttributes()
-			require.Len(t, attrs, 1)
-
-			attr := &attrs[0]
-			assertSubnetAttrKey(t, attr, 0)
-			require.Equal(t, "False", attr.GetValue())
-
-			// again enter to zero subnet
-			info.SetEntryFlag(true)
-
-			netmap.WriteSubnetInfo(&node, info)
-
-			// attribute should be removed
-			attrs = node.GetAttributes()
-			require.Empty(t, attrs)
-		})
-
-		t.Run("non-zero subnet", func(t *testing.T) {
-			var (
-				node netmap.NodeInfo
-				info netmap.NodeSubnetInfo
-				id   refs.SubnetID
-			)
-
-			// create non-zero subnet ID
-			const num = 15
-
-			id.SetValue(num)
-
-			// enter to the subnet
-			info.SetID(&id)
-			info.SetEntryFlag(true)
-
-			netmap.WriteSubnetInfo(&node, info)
-
-			// check attribute format
-			attrs := node.GetAttributes()
-			require.Len(t, attrs, 1)
-
-			attr := &attrs[0]
-			assertSubnetAttrKey(t, attr, num)
-			require.Equal(t, "True", attr.GetValue())
-
-			// again exit the subnet
-			info.SetEntryFlag(false)
-
-			netmap.WriteSubnetInfo(&node, info)
-
-			// attribute should be removed
-			attrs = node.GetAttributes()
-			require.Empty(t, attrs)
-		})
-	})
-}
-
-func TestSubnets(t *testing.T) {
-	t.Run("empty", func(t *testing.T) {
-		var node netmap.NodeInfo
-
-		called := 0
-
-		err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-			called++
-
-			require.True(t, refs.IsZeroSubnet(&id))
-
-			return nil
-		})
-
-		require.NoError(t, err)
-		require.EqualValues(t, 1, called)
-	})
-
-	t.Run("with correct attribute", func(t *testing.T) {
-		var (
-			node netmap.NodeInfo
-
-			attrEntry, attrExit netmap.Attribute
-		)
-
-		const (
-			numEntry = 13
-			numExit  = 14
-		)
-
-		attrEntry.SetKey(subnetAttrKey(strconv.FormatUint(numEntry, 10)))
-		attrEntry.SetValue("True")
-
-		attrExit.SetKey(subnetAttrKey(strconv.FormatUint(numExit, 10)))
-		attrExit.SetValue("False")
-
-		attrs := []netmap.Attribute{attrEntry, attrEntry}
-
-		node.SetAttributes(attrs)
-
-		mCalledNums := make(map[uint32]struct{})
-
-		err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-			mCalledNums[id.GetValue()] = struct{}{}
-
-			return nil
-		})
-
-		require.NoError(t, err)
-		require.Len(t, mCalledNums, 2)
-
-		_, ok := mCalledNums[numEntry]
-		require.True(t, ok)
-
-		_, ok = mCalledNums[numExit]
-		require.False(t, ok)
-
-		_, ok = mCalledNums[0]
-		require.True(t, ok)
-	})
-
-	t.Run("with incorrect attribute", func(t *testing.T) {
-		assertErr := func(attr netmap.Attribute) {
-			var node netmap.NodeInfo
-
-			node.SetAttributes([]netmap.Attribute{attr})
-
-			require.Error(t, netmap.IterateSubnets(&node, func(refs.SubnetID) error {
-				return nil
-			}))
-		}
-
-		t.Run("incorrect key", func(t *testing.T) {
-			var attr netmap.Attribute
-
-			attr.SetKey(subnetAttrKey("one-two-three"))
-
-			assertErr(attr)
-		})
-
-		t.Run("incorrect value", func(t *testing.T) {
-			var attr netmap.Attribute
-
-			attr.SetKey(subnetAttrKey("1"))
-
-			for _, invalidVal := range []string{
-				"",
-				"Troo",
-				"Fols",
-			} {
-				attr.SetValue(invalidVal)
-				assertErr(attr)
-			}
-
-			assertErr(attr)
-		})
-	})
-
-	t.Run("remove entry", func(t *testing.T) {
-		t.Run("zero", func(t *testing.T) {
-			var node netmap.NodeInfo
-
-			// enter to some non-zero subnet so that zero is not the only one
-			var attr netmap.Attribute
-
-			attr.SetKey(subnetAttrKey("321"))
-			attr.SetValue("True")
-
-			attrs := []netmap.Attribute{attr}
-			node.SetAttributes(attrs)
-
-			err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-				if refs.IsZeroSubnet(&id) {
-					return netmap.ErrRemoveSubnet
-				}
-
-				return nil
-			})
-
-			require.NoError(t, err)
-
-			attrs = node.GetAttributes()
-			require.Len(t, attrs, 2)
-
-			found := false
-
-			for i := range attrs {
-				if attrs[i].GetKey() == subnetAttrKey("0") {
-					require.Equal(t, "False", attrs[i].GetValue())
-					found = true
-				}
-			}
-
-			require.True(t, found)
-		})
-
-		t.Run("non-zero", func(t *testing.T) {
-			var (
-				node netmap.NodeInfo
-				attr netmap.Attribute
-			)
-
-			attr.SetKey(subnetAttrKey("99"))
-			attr.SetValue("True")
-
-			attrs := []netmap.Attribute{attr}
-			node.SetAttributes(attrs)
-
-			err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-				if !refs.IsZeroSubnet(&id) {
-					return netmap.ErrRemoveSubnet
-				}
-
-				return nil
-			})
-
-			require.NoError(t, err)
-
-			attrs = node.GetAttributes()
-			require.Empty(t, attrs)
-		})
-
-		t.Run("all", func(t *testing.T) {
-			var (
-				node  netmap.NodeInfo
-				attrs []netmap.Attribute
-			)
-
-			// enter to some non-zero subnet so that zero is not the only one
-			for i := 1; i <= 5; i++ {
-				var attr netmap.Attribute
-
-				attr.SetKey(subnetAttrKey(strconv.Itoa(i)))
-				attr.SetValue("True")
-
-				attrs = append(attrs, attr)
-			}
-
-			node.SetAttributes(attrs)
-
-			err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-				return netmap.ErrRemoveSubnet
-			})
-
-			require.Error(t, err)
-		})
-	})
-
-	t.Run("zero subnet removal via attribute", func(t *testing.T) {
-		var (
-			node netmap.NodeInfo
-
-			attrZero, attrOther netmap.Attribute
-		)
-
-		attrZero.SetKey(subnetAttrKey("0"))
-		attrZero.SetValue("False")
-
-		attrOther.SetKey(subnetAttrKey("1"))
-		attrOther.SetValue("True")
-
-		node.SetAttributes([]netmap.Attribute{attrZero, attrOther})
-
-		calledCount := 0
-
-		err := netmap.IterateSubnets(&node, func(id refs.SubnetID) error {
-			require.False(t, refs.IsZeroSubnet(&id))
-			calledCount++
-			return nil
-		})
-
-		require.NoError(t, err)
-		require.EqualValues(t, 1, calledCount)
-	})
-}
diff --git a/netmap/convert.go b/netmap/convert.go
index cc20d36..6bb1525 100644
--- a/netmap/convert.go
+++ b/netmap/convert.go
@@ -198,7 +198,6 @@ func (p *PlacementPolicy) ToGRPCMessage() grpc.Message {
 		m.SetSelectors(SelectorsToGRPC(p.selectors))
 		m.SetReplicas(ReplicasToGRPC(p.replicas))
 		m.SetContainerBackupFactor(p.backupFactor)
-		m.SetSubnetID(p.subnetID.ToGRPCMessage().(*refsGRPC.SubnetID))
 	}
 
 	return m
@@ -227,20 +226,6 @@ func (p *PlacementPolicy) FromGRPCMessage(m grpc.Message) error {
 		return err
 	}
 
-	subnetID := v.GetSubnetId()
-	if subnetID == nil {
-		p.subnetID = nil
-	} else {
-		if p.subnetID == nil {
-			p.subnetID = new(refs.SubnetID)
-		}
-
-		err = p.subnetID.FromGRPCMessage(subnetID)
-		if err != nil {
-			return err
-		}
-	}
-
 	p.backupFactor = v.GetContainerBackupFactor()
 
 	return nil
diff --git a/netmap/grpc/types.go b/netmap/grpc/types.go
index d0bf41a..f312bbb 100644
--- a/netmap/grpc/types.go
+++ b/netmap/grpc/types.go
@@ -1,7 +1,5 @@
 package netmap
 
-import refs "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/grpc"
-
 // SetReplicas of placement policy.
 func (m *PlacementPolicy) SetReplicas(v []*Replica) {
 	m.Replicas = v
@@ -22,11 +20,6 @@ func (m *PlacementPolicy) SetFilters(v []*Filter) {
 	m.Filters = v
 }
 
-// SetSubnetID sets ID of subnet.
-func (m *PlacementPolicy) SetSubnetID(v *refs.SubnetID) {
-	m.SubnetId = v
-}
-
 // SetName of placement filter.
 func (m *Filter) SetName(v string) {
 	m.Name = v
diff --git a/netmap/grpc/types.pb.go b/netmap/grpc/types.pb.go
index 276e648..f1d5ef0 100644
Binary files a/netmap/grpc/types.pb.go and b/netmap/grpc/types.pb.go differ
diff --git a/netmap/marshal.go b/netmap/marshal.go
index e08d6f0..5c8cf35 100644
--- a/netmap/marshal.go
+++ b/netmap/marshal.go
@@ -26,7 +26,6 @@ const (
 	backupPolicyField    = 2
 	selectorsPolicyField = 3
 	filtersPolicyField   = 4
-	subnetIDPolicyField  = 5
 
 	keyAttributeField     = 1
 	valueAttributeField   = 2
@@ -167,8 +166,6 @@ func (p *PlacementPolicy) StableMarshal(buf []byte) []byte {
 		offset += protoutil.NestedStructureMarshal(filtersPolicyField, buf[offset:], &p.filters[i])
 	}
 
-	protoutil.NestedStructureMarshal(subnetIDPolicyField, buf[offset:], p.subnetID)
-
 	return buf
 }
 
@@ -187,8 +184,6 @@ func (p *PlacementPolicy) StableSize() (size int) {
 		size += protoutil.NestedStructureSize(filtersPolicyField, &p.filters[i])
 	}
 
-	size += protoutil.NestedStructureSize(subnetIDPolicyField, p.subnetID)
-
 	return size
 }
 
diff --git a/netmap/test/generate.go b/netmap/test/generate.go
index 30e200e..8889bab 100644
--- a/netmap/test/generate.go
+++ b/netmap/test/generate.go
@@ -102,7 +102,6 @@ func GeneratePlacementPolicy(empty bool) *netmap.PlacementPolicy {
 		m.SetFilters(GenerateFilters(false))
 		m.SetSelectors(GenerateSelectors(false))
 		m.SetReplicas(GenerateReplicas(false))
-		m.SetSubnetID(refstest.GenerateSubnetID(false))
 	}
 
 	return m
diff --git a/netmap/types.go b/netmap/types.go
index c878184..27fc2ff 100644
--- a/netmap/types.go
+++ b/netmap/types.go
@@ -59,7 +59,6 @@ type PlacementPolicy struct {
 	backupFactor uint32
 	selectors    []Selector
 	filters      []Filter
-	subnetID     *refs.SubnetID
 }
 
 // Attribute of storage node.
@@ -302,14 +301,6 @@ func (p *PlacementPolicy) SetReplicas(replicas []Replica) {
 	p.replicas = replicas
 }
 
-func (p *PlacementPolicy) GetSubnetID() *refs.SubnetID {
-	return p.subnetID
-}
-
-func (p *PlacementPolicy) SetSubnetID(id *refs.SubnetID) {
-	p.subnetID = id
-}
-
 func (a *Attribute) GetKey() string {
 	if a != nil {
 		return a.key
diff --git a/refs/convert.go b/refs/convert.go
index 028bd6a..b2c353c 100644
--- a/refs/convert.go
+++ b/refs/convert.go
@@ -266,31 +266,3 @@ func (s *Signature) FromGRPCMessage(m grpc.Message) error {
 
 	return nil
 }
-
-// ToGRPCMessage forms refs.SubnetID message and returns it as grpc.Message.
-func (s *SubnetID) ToGRPCMessage() grpc.Message {
-	var m *refs.SubnetID
-
-	if s != nil {
-		m = new(refs.SubnetID)
-
-		m.SetValue(s.value)
-	}
-
-	return m
-}
-
-// FromGRPCMessage restores Info from grpc.Message.
-//
-// Supported types:
-//   - refs.SubnetID.
-func (s *SubnetID) FromGRPCMessage(m grpc.Message) error {
-	v, ok := m.(*refs.SubnetID)
-	if !ok {
-		return message.NewUnexpectedMessageType(m, v)
-	}
-
-	s.value = v.GetValue()
-
-	return nil
-}
diff --git a/refs/grpc/types.go b/refs/grpc/types.go
index 0cf7368..843a2ee 100644
--- a/refs/grpc/types.go
+++ b/refs/grpc/types.go
@@ -95,8 +95,3 @@ func (x *ChecksumType) FromString(s string) bool {
 
 	return ok
 }
-
-// SetValue sets subnet identifier in a base-10 integer format.
-func (x *SubnetID) SetValue(v uint32) {
-	x.Value = v
-}
diff --git a/refs/grpc/types.pb.go b/refs/grpc/types.pb.go
index 0d6b671..f16583b 100644
Binary files a/refs/grpc/types.pb.go and b/refs/grpc/types.pb.go differ
diff --git a/refs/marshal.go b/refs/marshal.go
index 14b0f8c..0382190 100644
--- a/refs/marshal.go
+++ b/refs/marshal.go
@@ -261,43 +261,3 @@ func (v *Version) StableSize() (size int) {
 func (v *Version) Unmarshal(data []byte) error {
 	return message.Unmarshal(v, data, new(refs.Version))
 }
-
-// SubnetID message field numbers
-const (
-	_ = iota
-	subnetIDValFNum
-)
-
-// StableMarshal marshals SubnetID to NeoFS API V2 binary format (Protocol Buffers with direct field order).
-//
-// Returns a slice of recorded data. Data is written to the provided buffer if there is enough space.
-func (s *SubnetID) StableMarshal(buf []byte) []byte {
-	if s == nil {
-		return []byte{}
-	}
-
-	if buf == nil {
-		buf = make([]byte, s.StableSize())
-	}
-
-	proto.Fixed32Marshal(subnetIDValFNum, buf, s.value)
-
-	return buf
-}
-
-// StableSize returns the number of bytes required to write SubnetID in NeoFS API V2 binary format (see StableMarshal).
-func (s *SubnetID) StableSize() (size int) {
-	if s != nil {
-		size += proto.Fixed32Size(subnetIDValFNum, s.value)
-	}
-
-	return
-}
-
-// Unmarshal unmarshals SubnetID from NeoFS API V2 binary format (see StableMarshal).
-// Must not be called on nil.
-//
-// Note: empty data corresponds to zero ID value or nil pointer to it.
-func (s *SubnetID) Unmarshal(data []byte) error {
-	return message.Unmarshal(s, data, new(refs.SubnetID))
-}
diff --git a/refs/message_test.go b/refs/message_test.go
index ba36434..69f2242 100644
--- a/refs/message_test.go
+++ b/refs/message_test.go
@@ -17,6 +17,5 @@ func TestMessageConvert(t *testing.T) {
 		func(empty bool) message.Message { return refstest.GenerateChecksum(empty) },
 		func(empty bool) message.Message { return refstest.GenerateSignature(empty) },
 		func(empty bool) message.Message { return refstest.GenerateVersion(empty) },
-		func(empty bool) message.Message { return refstest.GenerateSubnetID(empty) },
 	)
 }
diff --git a/refs/test/generate.go b/refs/test/generate.go
index cce64a8..6217a96 100644
--- a/refs/test/generate.go
+++ b/refs/test/generate.go
@@ -106,13 +106,3 @@ func GenerateChecksum(empty bool) *refs.Checksum {
 
 	return m
 }
-
-func GenerateSubnetID(empty bool) *refs.SubnetID {
-	m := new(refs.SubnetID)
-
-	if !empty {
-		m.SetValue(666)
-	}
-
-	return m
-}
diff --git a/refs/types.go b/refs/types.go
index 2d4fec7..d8f0d9b 100644
--- a/refs/types.go
+++ b/refs/types.go
@@ -1,10 +1,5 @@
 package refs
 
-import (
-	"fmt"
-	"strconv"
-)
-
 type OwnerID struct {
 	val []byte
 }
@@ -45,10 +40,6 @@ type Signature struct {
 	scheme    SignatureScheme
 }
 
-type SubnetID struct {
-	value uint32
-}
-
 type Version struct {
 	major, minor uint32
 }
@@ -178,56 +169,6 @@ func (s *Signature) SetScheme(scheme SignatureScheme) {
 	s.scheme = scheme
 }
 
-func (s *SubnetID) SetValue(id uint32) {
-	s.value = id
-}
-
-func (s *SubnetID) GetValue() uint32 {
-	if s != nil {
-		return s.value
-	}
-	return 0
-}
-
-// MarshalText encodes SubnetID into text format according to NeoFS API V2 protocol:
-// value in base-10 integer string format.
-//
-// Implements encoding.TextMarshaler.
-func (s *SubnetID) MarshalText() ([]byte, error) {
-	num := s.GetValue() // NPE safe, returns zero on nil (zero subnet)
-
-	return []byte(strconv.FormatUint(uint64(num), 10)), nil
-}
-
-// UnmarshalText decodes SubnetID from the text according to NeoFS API V2 protocol:
-// should be base-10 integer string format with bitsize = 32.
-//
-// Returns strconv.ErrRange if integer overflows uint32.
-//
-// Must not be called on nil.
-//
-// Implements encoding.TextUnmarshaler.
-func (s *SubnetID) UnmarshalText(txt []byte) error {
-	num, err := strconv.ParseUint(string(txt), 10, 32)
-	if err != nil {
-		return fmt.Errorf("invalid numeric value: %w", err)
-	}
-
-	s.value = uint32(num)
-
-	return nil
-}
-
-// IsZeroSubnet returns true iff the SubnetID refers to zero subnet.
-func IsZeroSubnet(id *SubnetID) bool {
-	return id.GetValue() == 0
-}
-
-// MakeZeroSubnet makes the SubnetID to refer to zero subnet.
-func MakeZeroSubnet(id *SubnetID) {
-	id.SetValue(0)
-}
-
 func (v *Version) GetMajor() uint32 {
 	if v != nil {
 		return v.major
diff --git a/refs/types_test.go b/refs/types_test.go
deleted file mode 100644
index 68d8fd7..0000000
--- a/refs/types_test.go
+++ /dev/null
@@ -1,72 +0,0 @@
-package refs_test
-
-import (
-	"math"
-	"strconv"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
-	"github.com/stretchr/testify/require"
-)
-
-func TestZeroSubnet(t *testing.T) {
-	id := new(refs.SubnetID)
-
-	require.True(t, refs.IsZeroSubnet(id))
-
-	id.SetValue(1)
-	require.False(t, refs.IsZeroSubnet(id))
-
-	refs.MakeZeroSubnet(id)
-	require.True(t, refs.IsZeroSubnet(id))
-}
-
-func TestSubnetID_MarshalText(t *testing.T) {
-	var id refs.SubnetID
-
-	const val = 15
-
-	id.SetValue(val)
-
-	txt, err := id.MarshalText()
-	require.NoError(t, err)
-
-	res, err := strconv.ParseUint(string(txt), 10, 32)
-	require.NoError(t, err)
-
-	require.EqualValues(t, val, res)
-
-	t.Run("nil", func(t *testing.T) {
-		var id *refs.SubnetID
-
-		txt, err := id.MarshalText()
-		require.NoError(t, err)
-
-		res, err := strconv.ParseUint(string(txt), 10, 32)
-		require.NoError(t, err)
-
-		require.Zero(t, res)
-	})
-}
-
-func TestSubnetID_UnmarshalText(t *testing.T) {
-	const val = 15
-
-	str := strconv.FormatUint(val, 10)
-
-	var id refs.SubnetID
-
-	err := id.UnmarshalText([]byte(str))
-	require.NoError(t, err)
-
-	require.EqualValues(t, val, id.GetValue())
-
-	t.Run("uint32 overflow", func(t *testing.T) {
-		txt := strconv.FormatUint(math.MaxUint32+1, 10)
-
-		var id refs.SubnetID
-
-		err := id.UnmarshalText([]byte(txt))
-		require.ErrorIs(t, err, strconv.ErrRange)
-	})
-}
diff --git a/subnet/encoding_test.go b/subnet/encoding_test.go
deleted file mode 100644
index 0a1fea1..0000000
--- a/subnet/encoding_test.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package subnet_test
-
-import (
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/message"
-	messagetest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/message/test"
-	subnettest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/subnet/test"
-)
-
-func TestMessageConvert(t *testing.T) {
-	messagetest.TestRPCMessage(t,
-		func(empty bool) message.Message { return subnettest.GenerateSubnetInfo(empty) },
-	)
-}
diff --git a/subnet/grpc/types.go b/subnet/grpc/types.go
deleted file mode 100644
index 3196c5a..0000000
--- a/subnet/grpc/types.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package subnet
-
-import (
-	refs "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/grpc"
-)
-
-// SetID returns identifier of the subnet. Nil arg is equivalent to zero subnet ID.
-func (x *SubnetInfo) SetID(id *refs.SubnetID) {
-	x.Id = id
-}
-
-// SetOwner sets subnet owner's ID in NeoFS system.
-func (x *SubnetInfo) SetOwner(id *refs.OwnerID) {
-	x.Owner = id
-}
diff --git a/subnet/grpc/types.pb.go b/subnet/grpc/types.pb.go
deleted file mode 100644
index 032ba6c..0000000
Binary files a/subnet/grpc/types.pb.go and /dev/null differ
diff --git a/subnet/info.go b/subnet/info.go
deleted file mode 100644
index 2e1e94c..0000000
--- a/subnet/info.go
+++ /dev/null
@@ -1,138 +0,0 @@
-package subnet
-
-import (
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
-	refsgrpc "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/grpc"
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/grpc"
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/message"
-	subnet "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/subnet/grpc"
-	protoutil "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/util/proto"
-)
-
-// Info represents information about NeoFS subnet. Structure is compatible with NeoFS API V2 protocol.
-//
-// Zero value represents zero subnet w/o an owner.
-type Info struct {
-	id *refs.SubnetID
-
-	owner *refs.OwnerID
-}
-
-// ID returns identifier of the subnet. Nil return is equivalent to zero subnet ID.
-func (x *Info) ID() *refs.SubnetID {
-	return x.id
-}
-
-// SetID returns identifier of the subnet. Nil arg is equivalent to zero subnet ID.
-func (x *Info) SetID(id *refs.SubnetID) {
-	x.id = id
-}
-
-// Owner returns subnet owner's ID in NeoFS system.
-func (x *Info) Owner() *refs.OwnerID {
-	return x.owner
-}
-
-// SetOwner sets subnet owner's ID in NeoFS system.
-func (x *Info) SetOwner(id *refs.OwnerID) {
-	x.owner = id
-}
-
-// ToGRPCMessage forms subnet.SubnetInfo message and returns it as grpc.Message.
-func (x *Info) ToGRPCMessage() grpc.Message {
-	var m *subnet.SubnetInfo
-
-	if x != nil {
-		m = new(subnet.SubnetInfo)
-
-		m.SetID(x.id.ToGRPCMessage().(*refsgrpc.SubnetID))
-		m.SetOwner(x.owner.ToGRPCMessage().(*refsgrpc.OwnerID))
-	}
-
-	return m
-}
-
-// FromGRPCMessage restores Info from grpc.Message.
-//
-// Supported types:
-//   - subnet.SubnetInfo.
-func (x *Info) FromGRPCMessage(m grpc.Message) error {
-	v, ok := m.(*subnet.SubnetInfo)
-	if !ok {
-		return message.NewUnexpectedMessageType(m, v)
-	}
-
-	var err error
-
-	id := v.GetId()
-	if id == nil {
-		x.id = nil
-	} else {
-		if x.id == nil {
-			x.id = new(refs.SubnetID)
-		}
-
-		err = x.id.FromGRPCMessage(id)
-		if err != nil {
-			return err
-		}
-	}
-
-	ownerID := v.GetOwner()
-	if ownerID == nil {
-		x.owner = nil
-	} else {
-		if x.owner == nil {
-			x.owner = new(refs.OwnerID)
-		}
-
-		err = x.owner.FromGRPCMessage(ownerID)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// SubnetInfo message field numbers
-const (
-	_ = iota
-	subnetInfoIDFNum
-	subnetInfoOwnerFNum
-)
-
-// StableMarshal marshals Info to NeoFS API V2 binary format (Protocol Buffers with direct field order).
-//
-// Returns a slice of recorded data. Data is written to the provided buffer if there is enough space.
-func (x *Info) StableMarshal(buf []byte) []byte {
-	if x == nil {
-		return []byte{}
-	}
-
-	if buf == nil {
-		buf = make([]byte, x.StableSize())
-	}
-
-	var offset int
-
-	offset += protoutil.NestedStructureMarshal(subnetInfoIDFNum, buf[offset:], x.id)
-	protoutil.NestedStructureMarshal(subnetInfoOwnerFNum, buf[offset:], x.owner)
-
-	return buf
-}
-
-// StableSize returns the number of bytes required to write Info in NeoFS API V2 binary format (see StableMarshal).
-func (x *Info) StableSize() (size int) {
-	if x != nil {
-		size += protoutil.NestedStructureSize(subnetInfoIDFNum, x.id)
-		size += protoutil.NestedStructureSize(subnetInfoOwnerFNum, x.owner)
-	}
-
-	return
-}
-
-// Unmarshal decodes Info from NeoFS API V2 binary format (see StableMarshal).
-func (x *Info) Unmarshal(data []byte) error {
-	return message.Unmarshal(x, data, new(subnet.SubnetInfo))
-}
diff --git a/subnet/test/generate.go b/subnet/test/generate.go
deleted file mode 100644
index 214ac7b..0000000
--- a/subnet/test/generate.go
+++ /dev/null
@@ -1,17 +0,0 @@
-package subnettest
-
-import (
-	refstest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/test"
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/subnet"
-)
-
-func GenerateSubnetInfo(empty bool) *subnet.Info {
-	m := new(subnet.Info)
-
-	if !empty {
-		m.SetID(refstest.GenerateSubnetID(false))
-		m.SetOwner(refstest.GenerateOwnerID(false))
-	}
-
-	return m
-}