Constrained RESTful Environments (CoRE) Parameters

Range	Registration Procedures
value starts with "core"	IETF Review
all other values	Specification Required

Value	Description	Reference
core.gp	Group Configuration resource. This resource is used to query/manage the group membership of a CoAP server.	[RFC7390, Section 2.6.2]
core.hc	HTTP-to-CoAP mapping base resource.	[RFC8075, Section 5.5]
oic.d.airconditioner	Air Conditioner device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.airpurifier	Air Purifier device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.blind	Blind device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.camera	Camera device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.dishwasher	Dishwasher device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.door	Door device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.dryer	Dryer device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.fan	Fan device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.garagedoor	Garage Door device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.light	Light device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.multifunctionprinter	Printer Multi-Function device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.oven	Oven device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.printer	Printer device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.receiver	Receiver device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.refrigerator	Refrigerator device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.robotcleaner	Robot Cleaner device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.scanner	Scanner device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.securitypanel	Security Panel device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.sensor	Generic Sensor device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.smartlock	Smart Lock device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.smartplug	Smart Plug device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.switch	Switch device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.thermostat	Thermostat device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.tv	Television device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.washer	Washer device. This is a clothes washer device.	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.d.watervalve	Water Valve device	[OIC_SmartHomeDevice_Specification_v1.1.0 section 10.1]
oic.r.airflow	Air Flow resource. This resource describes the properties associated with air flow.	[OIC_Resource_Type_Specification_v1.1.0 section 6.1]
oic.r.airflowcontrol	Air Flow Control resource. This resource describes the attributes associated with control of air flow, for example as modelled by a Thermostat (fan), Room A/C or other device.	[OIC_Resource_Type_Specification_v1.1.0 section 6.2]
oic.r.altimeter	Altimeter resource. This resource describes properties associated with the height of the position.	[OIC_Resource_Type_Specification_v1.1.0 section 6.58]
oic.r.audio	Audio Controls resource. This resource defines basic audio control functions.	[OIC_Resource_Type_Specification_v1.1.0 section 6.25]
oic.r.autofocus	Auto Focus resource. This resource describes whether an auto focus feature is on or off.	[OIC_Resource_Type_Specification_v1.1.0 section 6.26]
oic.r.automaticdocumentfeeder	Automatic Document Feeder resource. This resource describes the state of an automatic document feeder, typically used with a scanner.	[OIC_Resource_Type_Specification_v1.1.0 section 6.27]
oic.r.button	Button Switch resource. This resource describes the operation of a button style switch.	[OIC_Resource_Type_Specification_v1.1.0 section 6.28]
oic.r.clock	Clock resource. This resource describes the properties associated with clock and time.	[OIC_Resource_Type_Specification_v1.1.0 section 6.59]
oic.r.colour.autowhitebalance	Auto White Balance resource. This resource describes whether an auto balance feature is on or off.	[OIC_Resource_Type_Specification_v1.1.0 section 6.31]
oic.r.colour.chroma	Colour Chroma resource. This resource describes the colour using chroma conventions.	[OIC_Resource_Type_Specification_v1.1.0 section 6.6]
oic.r.colour.rgb	Colour RGB resource. This resource specifies the actual colour in the RGB space.	[OIC_Resource_Type_Specification_v1.1.0 section 6.7]
oic.r.colour.saturation	Colour Saturation resource. This resource describes a Colour saturation value.	[OIC_Resource_Type_Specification_v1.1.0 section 6.32]
oic.r.door	Door resource. This resource describes the open state of a door.	[OIC_Resource_Type_Specification_v1.1.0 section 6.9]
oic.r.energy.battery	Battery resource. This resource represents the charge state of a battery.	[OIC_Resource_Type_Specification_v1.1.0 section 6.3]
oic.r.energy.consumption	Energy Consumption resource. This resource describes the energy consumed by the device since power up and the instantaneous power draw of the device at the time the resource was queried.	[OIC_Resource_Type_Specification_v1.1.0 section 6.10]
oic.r.energy.drlc	Demand Response Load Control (DRLC) resource. This resource describes any to be applied or currently being applied DRLC signal.	[OIC_Resource_Type_Specification_v1.1.0 section 6.34]
oic.r.energy.overload	Energy Overload/Circuit Breaker resource. This resource describes whether an energy overload detector/circuit breaker has been tripped.	[OIC_Resource_Type_Specification_v1.1.0 section 6.35]
oic.r.energy.usage	Energy Usage resource. This resource describes a cumulative time-based energy usage query.	[OIC_Resource_Type_Specification_v1.1.0 section 6.11]
oic.r.height	Height resource. This resource describes the properties associated with height of an object's physical size.	[OIC_Resource_Type_Specification_v1.1.0 section 6.61]
oic.r.humidity	Humidity resource. This resource describes a sensed or desired humidity.	[OIC_Resource_Type_Specification_v1.1.0 section 6.12]
oic.r.icemaker	Ice Maker resource. This resource describes the operational state of an ice maker.	[OIC_Resource_Type_Specification_v1.1.0 section 6.13]
oic.r.light.brightness	Brightness resource. This resource describes the brightness of a light or lamp.	[OIC_Resource_Type_Specification_v1.1.0 section 6.5]
oic.r.light.dimming	Dimming resource. This resource describes a dimming function.	[OIC_Resource_Type_Specification_v1.1.0 section 6.8]
oic.r.light.ramptime	Ramp Time resource. This resource describes the Ramp Time of a dimming function.	[OIC_Resource_Type_Specification_v1.1.0 section 6.19]
oic.r.lock.code	Lock Code resource. This resource describes a lock code.	[OIC_Resource_Type_Specification_v1.1.0 section 6.15]
oic.r.lock.status	Lock resource. This resource describes whether a lock is locked or unlocked.	[OIC_Resource_Type_Specification_v1.1.0 section 6.14]
oic.r.media	Media resource. This resource specifies the media that a server supports.	[OIC_Resource_Type_Specification_v1.1.0 section 6.41]
oic.r.media.input	Media Source Input resource. This resource provides the list of input media sources available on the device.	[OIC_Resource_Type_Specification_v1.1.0 section 6.42]
oic.r.media.output	Media Source Output resource. This resource provides the list of output media sources available on the device.	[OIC_Resource_Type_Specification_v1.1.0 section 6.43]
oic.r.mode	Mode resource. This resource describes the modes of operation that a device can provide.	[OIC_Resource_Type_Specification_v1.1.0 section 6.16]
oic.r.movement.linear	Movement resource. This resource describes linear movement.	[OIC_Resource_Type_Specification_v1.1.0 section 6.54]
oic.r.nightmode	Night Mode resource. This resource describes whether a night mode feature is on or off.	[OIC_Resource_Type_Specification_v1.1.0 section 6.45]
oic.r.openlevel	Open Level resource. This resource describes how open or ajar an entity such as a window, door, blind or shutter is.	[OIC_Resource_Type_Specification_v1.1.0 section 6.17]
oic.r.operational.state	Operational State resource. This resource describes the operational and job states on a device.	[OIC_Resource_Type_Specification_v1.1.0 section 6.18]
oic.r.ptz	Pan Tilt Zoom Movement resource. This resource specifies the pan tilt and zoom capabilities of a device.	[OIC_Resource_Type_Specification_v1.1.0 section 6.47]
oic.r.refrigeration	Refrigeration resource. This resource describes a refrigeration function.	[OIC_Resource_Type_Specification_v1.1.0 section 6.20]
oic.r.sensor	Generic Sensor resource. This resource describes whether some value or property or entity has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.36]
oic.r.sensor.acceleration	Acceleration Sensor resource. This resource provides a measure of proper acceleration (g force).	[OIC_Resource_Type_Specification_v1.1.0 section 6.53]
oic.r.sensor.activity.count	Activity Count resource. This resource specifies an activity count.	[OIC_Resource_Type_Specification_v1.1.0 section 6.23]
oic.r.sensor.atmosphericpressure	Atmospheric Pressure resource. This resource provides a measurement of Mean Sea Level Pressure experienced at the measuring point expressed in millibars.	[OIC_Resource_Type_Specification_v1.1.0 section 6.24]
oic.r.sensor.carbondioxide	Carbon Dioxide Sensor resource. This resource describes whether carbon dioxide has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.29]
oic.r.sensor.carbonmonoxide	Carbon Monoxide Sensor resource. This resource describes whether carbon monoxide has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.30]
oic.r.sensor.contact	Contact Sensor resource. This resource describes whether a contact sensor has been tripped or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.33]
oic.r.sensor.geolocation	Geolocation Sensor resource. This resource describes the properties associated with the current geolocation coordinate.	[OIC_Resource_Type_Specification_v1.1.0 section 6.60]
oic.r.sensor.glassbreak	Glass Break Sensor resource. This resource describes a glass break sensor.	[OIC_Resource_Type_Specification_v1.1.0 section 6.37]
oic.r.sensor.heart.zone	Heart Rate Zone Sensor resource. This resource describes a measured heart rate by the current Zone using the Zoladz method.	[OIC_Resource_Type_Specification_v1.1.0 section 6.38]
oic.r.sensor.illuminance	Illuminance Sensor resource. This resource describes an illuminance sensor.	[OIC_Resource_Type_Specification_v1.1.0 section 6.39]
oic.r.sensor.magneticfielddirection	Magnetic Field Direction resource. This resource describes the direction of the Earth's magnetic field at the observer's current point in space.	[OIC_Resource_Type_Specification_v1.1.0 section 6.40]
oic.r.sensor.motion	Motion Sensor resource. This resource describes whether motion has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.43]
oic.r.sensor.presence	Presence Sensor resource. This resource describes whether presence has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.45]
oic.r.sensor.radiation.uv	UV Radiation resource. This resource describes an ultraviolet radiation measurement.	[OIC_Resource_Type_Specification_v1.1.0 section 6.51]
oic.r.sensor.sleep	Sleep Sensor resource. This resource describes whether human sleep has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.55]
oic.r.sensor.smoke	Smoke Sensor resource. This resource describes whether smoke has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.56]
oic.r.sensor.threeaxis	Three Axis Sensor resource. This resource provides a representation of the measurement from a three-axis sensor.	[OIC_Resource_Type_Specification_v1.1.0 section 6.57]
oic.r.sensor.touch	Touch Sensor resource. This resource describes whether touch has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.50]
oic.r.sensor.water	Water Sensor resource. This resource describes whether water has been sensed or not.	[OIC_Resource_Type_Specification_v1.1.0 section 6.52]
oic.r.signalstrength	Signal Strength resource. This resource describes the strength of a signal by means of Link Quality Indicator and Received Signal Strength Indicator.	[OIC_Resource_Type_Specification_v1.1.0 section 6.48]
oic.r.speech.tts	Speech Synthesis resource. This resource is capable of rendering speech and allows a client to provide an SSML document with text to render.	[OIC_Resource_Type_Specification_v1.1.0 section 6.49]
oic.r.switch.binary	Binary switch resource. This resource describes a binary switch (on/off).	[OIC_Resource_Type_Specification_v1.1.0 section 6.4]
oic.r.temperature	Temperature resource. This resource describes a sensed or actuated Temperature value.	[OIC_Resource_Type_Specification_v1.1.0 section 6.21]
oic.r.time.period	Time Period resource. This resource describes the time period over which any additionally provided information is derived or bounded.	[OIC_Resource_Type_Specification_v1.1.0 section 6.22]
oic.r.weight	Weight resource. This resource describes the properties associated with weight of an object.	[OIC_Resource_Type_Specification_v1.1.0 section 6.62]
oma.lwm2m	OMA LwM2M Resource. This Resource type indicates that the resource and all of its sub-resources support the OMA Lightweight M2M protocol, i.e. contain OMA LwM2M objects and resources.	[OMA-TS-LightweightM2M-V1_0]
bbf.usp.endpoint	Endpoint of the Broadband Forum USP protocol	[https://usp.technology/specification/mtp/coap/]
oic.wk.col	Collection resource.	[OCF_Core_Specification_v1.0.0 section D.2]
oic.wk.con	Device Configuration resource.	[OCF_Core_Specification_v1.0.0 section D.3]
oic.wk.con.p	Platform Configuration resource.	[OCF_Core_Specification_v1.0.0 section D.4]
oic.wk.d	Device resource.	[OCF_Core_Specification_v1.0.0 section D.5]
oic.wk.mnt	Maintenance resource.	[OCF_Core_Specification_v1.0.0 section D.6]
oic.wk.p	Platform resource.	[OCF_Core_Specification_v1.0.0 section D.7]
oic.wk.res	Discoverable Resources resource.	[OCF_Core_Specification_v1.0.0 section D.9]
oic.wk.scenelist	Scene List resource.	[OCF_Core_Specification_v1.0.0 section D.11]
oic.wk.scenecollection	Scene Member Collection resource.	[OCF_Core_Specification_v1.0.0 section D.12]
oic.wk.scenemember	Scene Member resource.	[OCF_Core_Specification_v1.0.0 section D.13]
oic.wk.rd	Resource Directory resource.	[OCF_Core_Specification_v1.0.0 section D.14]
oic.r.icon	Icon resource.	[OCF_Core_Specification_v1.0.0 section D.15]
oic.wk.introspection	Introspection resource.	[OCF_Core_Specification_v1.0.0 section D.16]
oic.r.airquality	Air Quality resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.65]
oic.r.airqualitycollection	Air Quality Collection resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.66]
oic.r.consumable	Consumable resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.67]
oic.r.consumablecollection	Consumable Collection resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.68]
oic.r.delaydefrost	Delay Defrost resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.69]
oic.r.ecomode	Ecomode resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.70]
oic.r.heatingzone	Heating Zone resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.71]
oic.r.heatingzonecollection	Heating Zone Collection resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.72]
oic.r.mediasourcelist	Media Source List resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.43]
oic.r.media.input	Input Media Source List resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.44]
oic.r.media.output	Output Media Source List resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.45]
oic.r.movement.ptz	Physical Pan Tilt Zoom resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.49]
oic.r.image.ptz	Image Pan Tilt Zoom resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.49]
oic.r.selectablelevels	Selectable Levels resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.73]
oic.r.value.conditional	Value Conditional resource.	[OCF_ResourceType_Specification_v1.0.0 section 6.74]
oic.d.airqualitymonitor	Air Quality Monitor device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.washerdryer	Washer Dryer (Laundry) device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.cookerhood	Cooker Hood device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.cooktop	Cooktop device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.dehumidifier	Dehumidifier device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.freezer	Freezer device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.foodprobe	Food Probe device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.humidifier	Humidifier device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]
oic.d.stb	Set Top Box device	[OCF_SmartHome_Device_Specification_v1.0.0 section 9.1]

Range	Registration Procedures
value starts with "core"	IETF Review
all other values	Specification Required

Value	Description	Reference
oic.if.baseline	The baseline Interface defines a view into all Properties of a Resource including the Meta Properties. This Interface is used to operate on the full Representation of a Resource.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.ll	The 'links list' Interface provides a view into Links in a Collection (Resource). Since Links represent relationships to other Resources, the links list interfaces may be used to discover Resources with respect to a context. The discovery is done by retrieving Links to these Resources.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.b	The batch Interface is used to interact with a collection of Resources at the same time. This also removes the need for the Client to first discover the Resources it is manipulating - the Server forwards the requests and aggregates the responses.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.r	The read-only Interface exposes the Properties of a Resource that may be 'read'. This Interface does not provide methods to update Properties or a Resource and so can only be used to 'read' Property Values.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.rw	The read-write Interface exposes only those Properties that may be both 'read' and 'written' and provides methods to read and write the Properties of a Resource.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.a	The actuator Interface is used to read or write the Properties of an actuator Resource.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
oic.if.s	The sensor Interface is used to read the Properties of a sensor Resource.	[OIC_Core_Specification_v1.1.0 section 7.5.3]
bbf.usp.c	USP Controller Endpoint of the Broadband Forum USP protocol	[https://usp.technology/specification/mtp/coap/]
bbf.usp.a	USP Agent Endpoint of the Broadband Forum USP protocol	[https://usp.technology/specification/mtp/coap/]

Code	Description	Reference
0.00	Indicates an Empty message.	[RFC7252, section 4.1]
0.01-0.31	Indicates a request. Values in this range are assigned by the [CoAP Method Codes] sub-registry.	[RFC7252, section 12.1.1]
1.00-1.31	Reserved	[RFC7252]
2.00-5.31	Indicates a response. Values in this range are assigned by the [CoAP Response Codes] sub-registry.	[RFC7252, section 12.1.2]
6.00-7.31	Reserved	[RFC7252]

CoAP Method Codes

Registration Procedure(s)

IETF Review or IESG Approval

Reference

[RFC7252, Section 12.1.1]

Available Formats

CSV

Code	Name	Reference
0.01	GET	[RFC7252]
0.02	POST	[RFC7252]
0.03	PUT	[RFC7252]
0.04	DELETE	[RFC7252]
0.05	FETCH	[RFC8132]
0.06	PATCH	[RFC8132]
0.07	iPATCH	[RFC8132]
0.08-0.31	Unassigned

CoAP Response Codes

Registration Procedure(s)

IETF Review or IESG Approval

Reference

[RFC7252, Section 12.1.2]

Available Formats

CSV

Code	Description	Reference
2.00	Unassigned
2.01	Created	[RFC7252]
2.02	Deleted	[RFC7252]
2.03	Valid	[RFC7252]
2.04	Changed	[RFC7252]
2.05	Content	[RFC7252]
2.06-2.30	Unassigned
2.31	Continue	[RFC7959]
3.00-3.31	Reserved	[RFC7252]
4.00	Bad Request	[RFC7252]
4.01	Unauthorized	[RFC7252]
4.02	Bad Option	[RFC7252]
4.03	Forbidden	[RFC7252]
4.04	Not Found	[RFC7252]
4.05	Method Not Allowed	[RFC7252]
4.06	Not Acceptable	[RFC7252]
4.07	Unassigned
4.08	Request Entity Incomplete	[RFC7959]
4.09	Conflict	[RFC8132]
4.10-4.11	Unassigned
4.12	Precondition Failed	[RFC7252]
4.13	Request Entity Too Large	[RFC7252][RFC7959]
4.14	Unassigned
4.15	Unsupported Content-Format	[RFC7252]
4.16-4.21	Unassigned
4.22	Unprocessable Entity	[RFC8132]
4.23-4.31	Unassigned
5.00	Internal Server Error	[RFC7252]
5.01	Not Implemented	[RFC7252]
5.02	Bad Gateway	[RFC7252]
5.03	Service Unavailable	[RFC7252]
5.04	Gateway Timeout	[RFC7252]
5.05	Proxying Not Supported	[RFC7252]
5.06-5.31	Unassigned

Range	Registration Procedures
0-255	IETF Review or IESG Approval
256-2047	Specification Required
2048-64999	Expert Review
65000-65535	Experimental use (no operational use)

Range	Registration Procedures
0-255	Expert Review
256-9999	IETF Review or IESG Approval
10000-64999	First Come First Served
65000-65535	Experimental use (no operational use)

Media Type	ID	Reference
text/plain; charset=utf-8	0	[RFC2046][RFC3676][RFC5147]
Unassigned	1-15
application/cose; cose-type="cose-encrypt0"	16	[RFC8152]
application/cose; cose-type="cose-mac0"	17	[RFC8152]
application/cose; cose-type="cose-sign1"	18	[RFC8152]
Unassigned	19-39
application/link-format	40	[RFC6690]
application/xml	41	[RFC3023]
application/octet-stream	42	[RFC2045][RFC2046]
Unassigned	43-46
application/exi	47	["Efficient XML Interchange (EXI) Format 1.0 (Second Edition)", February 2014]
Unassigned	48-49
application/json	50	[RFC4627]
application/json-patch+json	51	[RFC6902]
application/merge-patch+json	52	[RFC7396]
Unassigned	53-59
application/cbor	60	[RFC7049]
application/cwt	61	[RFC8392]
Unassigned	62-95
application/cose; cose-type="cose-encrypt"	96	[RFC8152]
application/cose; cose-type="cose-mac"	97	[RFC8152]
application/cose; cose-type="cose-sign"	98	[RFC8152]
Unassigned	99-100
application/cose-key	101	[RFC8152]
application/cose-key-set	102	[RFC8152]
Unassigned	103-109
application/senml+json	110	[RFC-ietf-core-senml-16]
application/sensml+json	111	[RFC-ietf-core-senml-16]
application/senml+cbor	112	[RFC-ietf-core-senml-16]
application/sensml+cbor	113	[RFC-ietf-core-senml-16]
application/senml-exi	114	[RFC-ietf-core-senml-16]
application/sensml-exi	115	[RFC-ietf-core-senml-16]
Unassigned	116-255
application/coap-group+json	256	[RFC7390]
Unassigned	257-279
application/pkcs7-mime; smime-type=server-generated-key (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	280	[RFC5751][RFC7030][draft-ietf-ace-coap-est]
application/pkcs7-mime; smime-type=certs-only (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	281	[RFC5751][draft-ietf-ace-coap-est]
application/pkcs7-mime; smime-type=CMC-Request (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	282	[RFC5751][RFC5273][draft-ietf-ace-coap-est]
application/pkcs7-mime; smime-type=CMC-Response (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	283	[RFC5751][RFC5273][draft-ietf-ace-coap-est]
application/pkcs8 (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	284	[RFC5751][RFC5958][draft-ietf-ace-coap-est]
application/csrattrs (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	285	[RFC7030][draft-ietf-ace-coap-est]
application/pkcs10 (TEMPORARY - registered 2018-08-09, expires 2019-08-09)	286	[RFC5751][RFC5967][draft-ietf-ace-coap-est]
Unassigned	287-309
application/senml+xml	310	[RFC-ietf-core-senml-16]
application/sensml+xml	311	[RFC-ietf-core-senml-16]
Unassigned	312-1541
Reserved, do not use	1542-1543	[OMA-TS-LightweightM2M-V1_0]
Unassigned	1544-9999
application/vnd.ocf+cbor	10000	[Michael_Koster]
Unassigned	10001-11541
application/vnd.oma.lwm2m+tlv	11542	[OMA-TS-LightweightM2M-V1_0]
application/vnd.oma.lwm2m+json	11543	[OMA-TS-LightweightM2M-V1_0]
Unassigned	11544-64999
Reserved for Experimental Use	65000-65535	[RFC7252]

Code	Name	Reference
7.00	Unassigned
7.01	CSM	[RFC8323]
7.02	Ping	[RFC8323]
7.03	Pong	[RFC8323]
7.04	Release	[RFC8323]
7.05	Abort	[RFC8323]
7.06-7.31	Unassigned

Range	Registration Procedures	Note
0-255	IETF Review or IESG Approval	Range applies to Option Number field
256-2047	Specification Required	Range applies to Option Number field
2048-64999	Expert Review	Range applies to Option Number field
65000-65535	Experimental use (no operational use)	Range applies to Option Number field

Constrained RESTful Environments (CoRE) Parameters

Resource Type (rt=) Link Target Attribute Values

Interface Description (if=) Link Target Attribute Values

CoAP Codes

CoAP Method Codes

CoAP Response Codes

CoAP Option Numbers

CoAP Content-Formats

CoAP Signaling Codes

CoAP Signaling Option Numbers

People

Number	Name	Reference
0	Reserved	[RFC7252]
1	If-Match	[RFC7252]
2	Unassigned
3	Uri-Host	[RFC7252]
4	ETag	[RFC7252]
5	If-None-Match	[RFC7252]
6	Observe	[RFC7641]
7	Uri-Port	[RFC7252]
8	Location-Path	[RFC7252]
9-10	Unassigned
11	Uri-Path	[RFC7252]
12	Content-Format	[RFC7252]
13	Unassigned
14	Max-Age	[RFC7252]
15	Uri-Query	[RFC7252]
16	Unassigned
17	Accept	[RFC7252]
18-19	Unassigned
20	Location-Query	[RFC7252]
21-22	Unassigned
23	Block2	[RFC7959][RFC8323]
24-26	Unassigned
27	Block1	[RFC7959][RFC8323]
28	Size2	[RFC7959]
29-34	Unassigned
35	Proxy-Uri	[RFC7252]
36-38	Unassigned
39	Proxy-Scheme	[RFC7252]
40-59	Unassigned
60	Size1	[RFC7252]
61-127	Unassigned
128	Reserved	[RFC7252]
129-131	Unassigned
132	Reserved	[RFC7252]
133-135	Unassigned
136	Reserved	[RFC7252]
137-139	Unassigned
140	Reserved	[RFC7252]
141-257	Unassigned
258	No-Response	[RFC7967]
259-2048	Unassigned
2049	OCF-Accept-Content-Format-Version	[Michael_Koster]
2050-2052	Unassigned
2053	OCF-Content-Format-Version	[Michael_Koster]
2054-64999	Unassigned
65000-65535	Reserved for Experimental Use	[RFC7252]

Applies to	Number	Name	Reference
7.01	2	Max-Message-Size	[RFC8323]
7.01	4	Block-Wise-Transfer	[RFC8323]
7.02, 7.03	2	Custody	[RFC8323]
7.04	2	Alternative-Address	[RFC8323]
7.04	4	Hold-Off	[RFC8323]
7.05	2	Bad-CSM-Option	[RFC8323]