OMA LightweightM2M (LwM2M) Object and Resource Registry

ObjectID Classes

Category Label URN Object ID range Description Operations




0 - 1023 Objects Produced by OMA. Only OMA can use this range.
0-499 DM&SE Working Group
500-1023 IPSO Working Group



n/a 1024 - 2047 Reserved for future use -- --




2048 - 10240 Objects registered by 3rd party standards organisations or alliances. Register




10241 - 32768 Objects registered by companies or individuals. Register
Company Reserved



32769 - 42768 Company bulk reservations of up to 50 Object IDs. This range is to create private LwM2M Objects that are not published on the OMNA Lightweight Object Registry. Reserve



42769 - 42800 Object IDs for testing purpose. These IDs MUST NOT be used in production as collisions with other Object IDs are possible. -- --



42801 - 65534 Reserved for future use. -- --
Note: Final allocation of objectIDs will be done by OMNA Staff.

ResourceID Classes

Category Resource ID Range Description Operations

Common Resources

0 - 2047 Common resource defined inside Objects. Inside of an Object the resourceIDs must be unique but it can be reused in different Objects. -- --

Reusable Resources

2048 - 26240 Resources registered by companies, standards organisations or alliances. Note: ResourceID is finally allocated by OMNA Staff. Private registrations are not allowed

Private Resources

26241 - 32768 Private resource range, no registration is necessary and open to re-use. -- --

LwM2M Objects

oma-label Objects Produced by OMA

URN: urn:oma:lwm2m:oma:ObjectID:version | range (0 - 1,023)

URN / Version XML Name LwM2M Editor Object Name Technical Specification Description
Objects in the above table (oma-label) are only registered by OMA Working Groups via an internal registration process, called OMNA.

ext-label Objects Produced by 3rd party Standards Development Organizations

URN: urn:oma:lwm2m:ext:ObjectID:version | range (2,048 - 10,240)

URN / Version XML Name
LwM2M Editor Object Name Technical Specification Owner Description
Register a new Object produced by a 3rd party SDO (Standards Development Organization).

x-label Objects Produced by vendors or individuals

URN: urn:oma:lwm2m:x:ObjectID:version | ranges (10,241 - 32,768)

10241 - 32768 Range accepts registration.

26241 - 32768 Previously this range didn't need registration but since Jan 24, 2023 it does.

URN / Version XML Name LwM2M Editor Object Name Technical Specification Company Description - Objects Produced by Vendors
Click here to register Objects Produced by vendors or individuals between ranges 10241 - 26240

x-label Bulk Objects Reserved by Vendors

32769 - 42768 This range is used for company bulk reservation (up to 50 ObjectIDs). This range is to create private objects that are not registered here.

To Reserve bulk objects
Object ID Company

LwM2M Resources

Reusable Resources

range: (2048 - 26240)

Note: The value of attributes marked (*) CANNOT be changed when the Reusable Resource is defined inside of an Object.

ResourceID* Name/Technical Spec*
Operation* Type* Range/Enumeration* Units* Submitter Description
Register a new Resource produced by 3rd parties.