Identifier Survey

No	"Thing" or "Apllication domain"	Identifier	Characteristic	Universally Unique	Locally Unique	Mutable	Transferrable	Discoverable	Relation to Owner	Applicability	Secure	Controlling Body	Description
1	Mobile Phone Fixed Line Phone	MSISDN Mobile Station International Subscriber Directory Number	15 digits (max for public networks; internal 40 digits more)	YES	YES	YES	YES (with constraints)	YES (Telco internal) exept: ENUM numbers ENUM defines a way to discovery MSISDN via DNS	YES	Mobile and Fixed Telephony Networks PSTN/GSM/3G/LTE		International Telecommunication Union ITU-T E.164	In public networks a ITU E.164 number has up to 15 digits. A full E.164 number consist of a country code, national destination code and a subscriber number.
2	Mobile Phone	IMSI International Mobile Subscriber Identity	15 digits	YES	YES	YES	YES	YES (Telco internal)	YES	any mobile network that connects to another network		International Telecommunication Union ITU-T E.212 Operators	IMSI is a unique identifier for a user within a GSM network. It is asociated with a SIM card. A S
3	Mobile Phone	IMEI International Mobile Equipment Identity	15 or 17 digits	USUALLY	YES	NO	NO	Vendor or Telco database	None	3GPP and iDEN mobiles		GSMA	IMEI uniquely identifies an individual mobile device.. An IMEI is allocated by the equipment manufacturer and registered by the network operator, who stores it in the Entrepreneurs-in-Residence (EIR).
4	Ethernet	MAC address Media Access Control address	48 or 64 bit	YES (exceptions possible)	YES	MASKING	NO	YES	NONE	Most IEEE 802 network technologies, including Ethernet and WiFi.		IEEE	A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and WiFi. Common configurations are MAC-48, EUI-48, and EUI-64.
5	IP address	IPv4 address Internet Protocol	32 BITS	NO	YES (WITH CONSTRAINTS)	YES	NO	YES	VIA DNS	Internet connected devices utilize IP Addresses	Some TLDs utilize DNSSEC	IANA	The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (Internet service providers) and other entities.
		TMSI	4 OCTETS	NO	WITH THE VLR ONLY	YES	NO	YES	None	GSM or UMTS networks			Temporary Mobile Subscriber Identity (TMSI) is the identity that is most commonly sent between the mobile and the network.
		UDID	40 CHAR			NO						Apple	iPhone unique device identifier, or UDID
		Android ID:				YES						Google
	PCI Component	PCI Identifier	32 BITS (Vendor ID + Device ID)	NO	NO - Only idenifies Device Type uniquely	YES	YES	YES	NONE				Peripheral Component Interconnect (PCI), as its name implies is a standard that describes how to connect the peripheral components of a system together in a structured and controlled way.
	IPv4 Addressable Object	IP Address (IPV4)	32 BITS	NO	YES (WITH CONSTRAINTS)	YES	NO	YES	VIA DNS	Internet connected devices utilize IP Addresses	Some TLDs utilize DNSSEC	IANA	The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (Internet service providers) and other entities.
	IPv6 Addressable Object	IP Address (IPV6)	128 BITS	NO	YES (WITH CONSTRAINTS)	YES	NO	YES	VIA DNS	Internet connected devices utilize IP Addresses	Some TLDs utilize DNSSEC	IANA	The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (Internet service providers) and other entities.
	SNMP community	SNMP community name	variable	No	Yes	Yes	No	Yes	None	Obsolete	No		SNMP tops the list of the SANS Institute's Common Default Configuration Issues as the default SNMP community strings is set to ‘public’ and ‘private’
	SNMP network element	SMNP Agent Object Instance	OID	Yes	Yes	Yes	Yes	Yes	None	Any network object that has an SNMP agent	If V3		Simple Network Management Protocol (SNMP) is an Internet-standard protocol for managing devices via "agents" on IP networks.
	Cloud/Virtual Device
	Industrial Control System Entity
	SCADA (supervisory control and data acquisition) Distributed Network Protocol (DNP3)	DNP3 Remote Identifier	Link Address (1 or 2)	No	Yes	Yes	No	Yes	None	Resembles IEC 60870-5 FT3 frame	Not by default, IEEE 1379-2000 recommends security practices	None, recommended in IEEE Std. IEEE 1379-2000	DNP3 (Distributed Network Protocol) is a set of communications protocols used between components in process automation systems in utilities including electric and water companies. https://www.dnp.org/Lists/Announcements/Attachments/7/Secure%20Authentication%20v5%202011-11-08.pdf
	Smart Parking meter
	Voting Machine
	Radiological device
	Emergency Response Radio
	Automobile telematics device
	CAN Node	CAN Node ID	Variable, on the order of tens of bits	No	Yes	No	?	?			N		Q.v. https://en.wikipedia.org/wiki/CAN_bus
	Air Traffic Control Sensor
	Unattented Vehicle

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