query: aid:D276000186F2$format=text result: Found object: aid:D276000186F2 status: Information available name: MAC (OUI/EUI or CID/ELI) address based AID description: MAC (or OUI/EUI or CID/ELI) address based AID (up to 52 description: application-specific bits) description: You can generate AIDs using a company identification (OUI description: or CID) or using an NUI (an NUI-48 is a 48-bit NUI that description: is an EUI-48, ELI-48, SAI-48, or AAI-48). description: New definition as of 3 December 2023 description: Syntax: description: D2 76 00 01 86 F2 + Size (1 nibble) + ELI/EUI/OUI/CID/... description: (1-16 nibbles BigEndian binary) + "F" padding if nibble description: count is odd + [ application-defined bits ] description: The "size" nibble defines the length of the identifier description: (ELI/EUI/...):  description: description: 0 = 4-bit identifier (1 Nibble identifier + "F" + description: optional 16 Nibble PIX) description: 1 = 8-bit identifier (2 Nibble identifier + optional 16 description: Nibble PIX) description: 2 = 12-bit identifier (3 Nibble identifier + "F" + description: optional 14 Nibble PIX) description: 3 = 16-bit identifier (4 Nibble identifier + optional 14 description: Nibble PIX) description: 4 = 20-bit identifier (5 Nibble identifier + "F" + description: optional 12 Nibble PIX) description: 5 = 24-bit identifier (6 Nibble identifier + optional 12 description: Nibble PIX), e.g. a pure OUI (MA-L), or CID description: 6 = 28-bit identifier (7 Nibble identifier + "F" + description: optional 10 Nibble PIX), e.g. a pure MA-M description: 7 = 32-bit identifier (8 Nibble identifier + optional 10 description: Nibble PIX), e.g. CDI-32 description: 8 = 36-bit identifier (9 Nibble identifier + "F" + description: optional 8 Nibble PIX), e.g. a pure OUI-36 (MA-S) description: 9 = 40-bit identifier (10 Nibble identifier + optional 8 description: Nibble PIX), e.g. CDI-40 (deprecated), or TCDI-40 description: A = 44-bit identifier (11 Nibble identifier + "F" + description: optional 6 Nibble PIX) description: B = 48-bit identifier (12 Nibble identifier + optional 6 description: Nibble PIX), e.g. a EUI-48, or ELI-48 description: C = 52-bit identifier (13 Nibble identifier + "F" + description: optional 4 Nibble PIX) description: D = 56-bit identifier (14 Nibble identifier + optional 4 description: Nibble PIX) description: E = 60-bit identifier (15 Nibble identifier + "F" + description: optional 2 Nibble PIX), e.g. a EUI-60 (deprecated) description: F = 64-bit identifier (16 Nibble identifier + optional 2 description: Nibble PIX), e.g. a EUI-64, or ELI-64 description: description: Next comes the identifier. It can be any MAC-based description: identifier between 1 nibble (4-bit) and 16 nibbles description: (64-bit), but they must be defined by IEEE and must be description: unique and unambiguous, because a non-unique MAC-based description: identifier cannot be encoded into an unique AID. description: Examples of IEEE identifiers are: description: description: IEEE Registrations description: description: CID*** description: OUI (MA-L) description: MA-M* description: OUI-36 (MA-S) description: IAB (deprecated) description: description: description: EUI (OUI + Vendor part) description: description: EUI-48 / MAC-48** (deprecated term) description: EUI-60 (deprecated) description: EUI-64 description: description: Regular EUI-64 description: MAC/EUI-48 to EUI-64 encapsulation (deprecated, because description: duplicate EUI-64 can be formed description: (https://www.ieee802.org/1/files/public/docs2014/as-garner-impact-of-new-OUI-tier-structure-on-1588-and-802-1as.pdf)) description: description: description: description: description: ELI*** (CID + Vendor part) description: description: ELI-48 description: ELI-64 description: description: description: CDI (OUI + Vendor part) description: description: CDI-32  description: CDI-40 (deprecated) description: TCDI-40 description: description: description: Not possible: description: description: OUI-22 (deprecated) is not possible, since there is no description: 22-bit size option. description: CDI-30 (deprecated) is not possible, since there is no description: 30-bit size option. description: AAI are NOT allowed, because they are not worldwide description: unique. description: description: description: SAI may only be used if it is worldwide unique (depending description: on the IEEE standard defining the SAI). description: description: * IEEE recommends not to use the 28-bit identifier MA-M description: to identify a company description: (https://www.ieee802.org/1/files/public/docs2014/as-garner-impact-of-new-OUI-tier-structure-on-1588-and-802-1as.pdf), description: but we don't see any reason why not to do it, since the description: MA-M prefix is unique and unambiguous. description: ** You can generate an AID using the MAC of your network description: card, but then you must make sure that nobody else can description: use that network card, otherwise they could use it to description: generate an AID that you have previously defined. In description: other words: If you have created an AID using your MAC description: address, then you will lose the permission to use the AID description: namespace once you give/sell the network card to someone description: else. description: *** IEEE defines "Administrator CIDs" (e.g. 3AA3F8, description: CA30BF, 4A07D6, FA94F1) which are not assigned description: exclusively, to allow local administrators to create description: ELIs. These CIDs and their constructed ELIs must not be description: used to create an AID, because the resulting AID will be description: ambiguous! description: In the end, you can append an optional PIX to the AID. description: Examples description: description: If you want to use a 6-byte MAC address (MAC-48, used for description: network devices), a EUI-48 address (used for other description: devices and software), or an ELI-48 as an identifier: description: D2 76 00 01 86 F2 B1 12 23 34 45 56 6F  = description: EUI-48/ELI-48 11:22:33:44:55:66, without description: application-specific part description: description: If you have a EUI-64 (based on OUI) or ELI-64 (based on description: CID): description: D2 76 00 01 86 F2 F1 12 23 34 45 56 67 78 8F  = description: EUI-64/ELI-64 address 11:22:33:44:55:66:77:88, without description: application-specific part description: description: You can also merely use an OUI/MA-L, MA-M, OUI-36/MA-S, description: IAB, or CID as an identifier: description: D2 76 00 01 86 F2 51 23 45 6F        = OUI description: (MA-L) 123456, without application-specific part description: D2 76 00 01 86 F2 61 23 45 67       = MA-M description: 1234567, without application-specific part description: D2 76 00 01 86 F2 81 23 45 67 89         = OUI-36 description: (MA-S) 123456789, without application-specific part description: D2 76 00 01 86 F2 B0 05 0C 21 23 45 6F       = IAB description: before September 2012 (00-50-C2) 123456, without description: application-specific part description: D2 76 00 01 86 F2 B4 0D 85 51 23 45 6F         = IAB description: after September 2012 (40-D8-55) 123456, without description: application-specific part description: description: Although CID cannot be used to generate a UAA MAC description: address, the CID is still unique and cannot overlap with description: OUI, so CID (an ELI) can be still used to create a unique description: AID. description: D2 76 00 01 86 F2 51 A2 34 5F        = CID description: 1A2345, without application specific part url: https://hosted.oidplus.com/viathinksoft/?goto=aid%3AD276000186F2 canonical-identifier: oid:1.3.6.1.4.1.37476.30.9.6175446.1257316734 alternate-identifier: guid:005e3ad6-4b3b-8000-a571-2d96395f6d7f alternate-identifier: mac:B2-B6-CA-F1-21-7E alternate-identifier: mac:B3-B6-CA-F1-21-7E alternate-identifier: oid:1.3.6.1.4.1.37476.30.9.6175446.1257316734 alternate-identifier: oid:1.3.6.1.4.1.37476.30.9.6175446.1257316734 alternate-identifier: x500dn:/dc=com/dc=example/cn=oidplus/1.3.6.1.4.1.37476.2.5.2.9.4.1=6175446/1.3.6.1.4.1.37476.2.5.2.9.4.2=1257316734 parent: aid:D276000186F created: 2022-09-23 22:18:44 updated: 2025-07-24 21:35:40 ra: Unknown ra-status: Information unavailable % -----BEGIN RSA SIGNATURE----- % dqtnIA7QsFJwsNaRSsRpVNsQ5U/2HKmrUiPj14ro+yWHdA2/8CA7+fappOxkNWrXmfjH5KPUQHtnEl % Z3zeJiffCyqE51S6e1ynJmGSZRtaGNMXntKqPNQxfaho2QLft22tCBx3gmmYINX39Uf9i8jOcz/41u % ZZjboDHBFKde5gUN97zHE+ttAqNu5nxswC4ir2Vh49BWMm6fHZx8R49RdUtAl4/WpoyhQDmjMhhsV2 % W8ubyNCYrh+9EKis9Cv6jm5lWeUz8lBhnarohIu8EOCv5FzooA4dkd5uRrS/iEyW+vJ/dYgzpC5ED6 % YLUBDlGgsmUu6pVqyqxuaity3uqflw== % -----END RSA SIGNATURE-----