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Authority">Registration Authority</a></li></ul> </div> </div> </div> </form>  </div>  <button id="main-search-button" class="btn btn-md search-bar-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#search-input-wrapper" aria-expanded="false" aria-controls="search-input-wrapper" aria-label="Click/Tap to Toggle the Search."><i class="fa fa-search"></i><span class="ms-2 me-2" id="search-bar-text" style="height:54px">Search the IEEE SA Website...</span></button> </div>  <a href="/products-programs/regauth/" class="mac-address-link d-none d-lg-block"><span>MAC ADDRESS</span></a> <div class="screen-darken"></div> </div>  </nav>  </section>  </header> <main> <section id="page-title"> <div class="container"> <div class="row"> <div class="col-12"> <h1 class="page-title">Registration Authority</h1> </div>  </div>  </div>  </section>  <section id="breadcrumbs"> <div class="container"> <div class="row"> <div class="col-12"> <nav id="breadcrumb-nav" aria-label="breadcrumb"> <ol class="breadcrumb"> <li class="breadcrumb-item"><a href="https://standards.ieee.org" title="Home">Home</a> </li> <li class="breadcrumb-item"><a href="https://standards.ieee.org/products-programs/" title="Products & Programs">Products & Programs</a></li> <li class="breadcrumb-item active" aria-current="page">Registration Authority </li> </ol>  </nav>  </div>  </div>  </div>  </section>  <section id="content"> <div class="container"> <div class="row"> <div id="main-content" class="col-12"> <div class="post"><div class="wpb-content-wrapper"><div class="vc_row wpb_row vc_row-fluid"><div class="right wpb_column vc_column_container vc_col-sm-8" id="inner-content"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_message_box vc_message_box-standard vc_message_box-rounded vc_color-grey vc_do_message" ><div class="vc_message_box-icon"><i class="fas fa-info-circle"></i></div><p>Please note that the annual 3% price increase will go into effect for all registries on 31 December 2024 at 1:00 pm ET.</p> </div><h2 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h3" >About the Registration Authority</h2> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>IEEE offers Registration Authority programs or registries which maintain lists of unique identifiers under standards and issue unique identifiers to those wishing to register them. The IEEE Registration Authority assigns unambiguous names to objects in a way which makes the assignment available to interested parties.</p> </div> </div> <div class="wpb_video_widget wpb_content_element vc_clearfix mt-5 vc_video-aspect-ratio-169 vc_video-el-width-100 vc_video-align-left" > <div class="wpb_wrapper"> <div class="wpb_video_wrapper"><iframe title="How to obtain MAC addresses (English)" width="500" height="281" data-src="https://www.youtube.com/embed/0nlkxVfyxL4?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="lazyload" data-load-mode="1"></iframe></div> </div> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p><strong>View in:</strong> <a href="http://www.youtube.com/embed/bWtfk_xJHL8" target="_blank" rel="noopener">Chinese</a> | <a href="http://www.youtube.com/embed/0nlkxVfyxL4" target="_blank" rel="noopener">English</a> | <a href="http://www.youtube.com/embed/otp36ceWhEQ" target="_blank" rel="noopener">Japanese</a> | <a href="http://www.youtube.com/embed/RaTv_ttvuf0" target="_blank" rel="noopener">Korean</a> | <a href="http://www.youtube.com/embed/r8D26-YuJ9k" target="_blank" rel="noopener">Russian</a></p> </div> </div> <div class="wpb_single_image wpb_content_element vc_align_center wpb_content_element mt-5"> <figure class="wpb_wrapper vc_figure"> <a href="/products-services/regauth/mac/" target="_self" class="vc_single_image-wrapper vc_box_border_grey"><img fetchpriority="high" decoding="async" width="1000" height="270" src="https://standards.ieee.org/wp-content/uploads/import/ieeemacaddress_top.png" class="vc_single_image-img attachment-full" alt="Infographic. Finding the right MAC Address for your business. Wired in or wireless, to connect to the Internet of Things (IoT), all things must have a home address. Learn More." title="Finding the right MAC Address for your business" /></a> </figure> </div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p><a class="arrow-link" href="/products-services/regauth/mac/">View Infographic</a></p> </div> </div> <h3 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h4" >Public Listing</h3> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p><a class="arrow-link" href="https://regauth.standards.ieee.org/standards-ra-web/pub/view.html#registries" target="_blank" rel="noopener">Search for an Assignment</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-4" >Download Public Listing</h4><div class="vc_message_box vc_message_box-standard vc_message_box-rounded vc_color-grey vc_do_message" ><div class="vc_message_box-icon"><i class="fas fa-info-circle"></i></div><p>In order to download the entire public listing for a registry, please select either the text or CSV file below.</p> <p><small>Note: the CSV files below use the UTF-8 character set. Please open the files in an application that supports UTF-8.</small></p> </div><div class="vc_row wpb_row vc_inner vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <ul> <li><a href="http://standards-oui.ieee.org/oui/oui.csv" target="_blank" rel="noopener">IEEE MA-L Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/oui28/mam.csv" target="_blank" rel="noopener">IEEE MA-M Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/oui36/oui36.csv" target="_blank" rel="noopener">IEEE MA-S Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/iab/iab.csv" target="_blank" rel="noopener">IEEE IAB Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/cid/cid.csv" target="_blank" rel="noopener">IEEE CID Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/ethertype/eth.csv" target="_blank" rel="noopener">IEEE EtherType™ Assignments (CSV)</a></li> </ul> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space hide-desktop" style="height: 0.5rem"><span class="vc_empty_space_inner"></span></div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <ul> <li><a href="http://standards-oui.ieee.org/manid/manid.csv" target="_blank" rel="noopener">IEEE Manufacturer ID Assignments (CSV)</a></li> <li><a href="http://standards-oui.ieee.org/bopid/opid.csv" target="_blank" rel="noopener">IEEE Operator ID Assignments (CSV)</a></li> <li><a href="/products-services/regauth/psid/public/" target="_blank" rel="noopener">IEEE PSID Assignment</a></li> <li><a href="/products-services/regauth/llc/public/" target="_blank" rel="noopener">IEEE Logical Link Control Assignments</a></li> <li><a href="/products-services/regauth/grpmac/public/" target="_blank" rel="noopener">IEEE Standards Group Assignments</a></li> <li><a href="/products-services/regauth/stid/public/" target="_blank" rel="noopener">IEEE STID Assignments</a></li> </ul> </div> </div> </div></div></div></div><h3 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h4 mt-5" >Registries</h3><div class="vc_row wpb_row vc_inner vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"><h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5" >MAC Address Block Large (MA-L)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>An MA-L assignment includes an OUI and large blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.</p> <p><a class="arrow-link" href="/products-services/regauth/oui/">Learn More About MA-L</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >MAC Address Block Medium (MA-M)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>An MA-M assignment includes medium blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.</p> <p><a class="arrow-link" href="/products-services/regauth/oui28/">Learn More About MA-M</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >MAC Address Block Small (MA-S)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>An MA-S assignment includes an OUI-36 and small blocks of EUI-48 and EUI-64 values which can be used as MAC Addresses, Bluetooth Device Addresses, Ethernet Addresses or object identifiers.</p> <p><a class="arrow-link" href="/products-services/regauth/oui36/">Learn More About MA-S</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Company ID (CID)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>A unique 24-bit identifier that cannot be used to generate EUI-48 or EUI-64 values. Therefore, the CID is especially applicable in applications where unique MAC addresses are not required.</p> <p><a class="arrow-link" href="/products-services/regauth/cid/">Learn More About CID</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >EtherType™</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Provides a context for interpretation of the data field of an Ethernet/IEEE 802.3 data frame (protocol identification).</p> <p><a class="arrow-link" href="/products-services/regauth/ethertype/">Learn More About EtherType™</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Manufacturer ID</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>The manufacturer of a transducer is defined with a 14-bit code called the manufacturer ID.</p> <p><a class="arrow-link" href="/products-services/regauth/manid/">Learn More About Manufacturer ID</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Logical Link Control (LLC)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Contains addressing information that consists of the Destination Service Access Point (DSAP) and the Source Service Access Point (SSAP) address field.</p> <p><a class="arrow-link" href="/products-services/regauth/llc/">Learn More About LLC</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >AcpcTreeId</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>An identifier for a specific set of binary trees used to convey certificate access codes to certificate users who are using the Activation Codes for Pseudonym Certificates (ACPC) technique specified in IEEE Std 1609.2.1. The assignee of an AcpcTreeId is assigned to operate an ACPC Certificate Access Manager using that AcpcTreeId.</p> <p><a class="arrow-link" href="/products-services/regauth/acpctid/">Learn More About AcpcTreeId</a></p> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-6"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space hide-desktop" style="height: 3rem"><span class="vc_empty_space_inner"></span></div><h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5" >Unique Registration Number (URN)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>A 64-bit unique identifier contained in memory devices, or nodes, in which IEEE 1451.4 TEDS data is stored.</p> <p><a class="arrow-link" href="/products-services/regauth/urn/">Learn More About URN</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >IEEE Template/TDL Item</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>IEEE template is a definition of the placement and significance of each piece of data stored within the TEDS memory. A TDL’s purpose is to map bits.</p> <p><a class="arrow-link" href="/products-services/regauth/tdl/">Learn More About IEEE Template/TDL Item</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Provider Service Identifier (PSID)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Used by IEEE 1609 standards to identify a particular application service provider that announces it is providing a service to potential users of an application or service.</p> <p><a class="arrow-link" href="/products-services/regauth/psid/">Learn More About PSID</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >IEEE 802.16 Operator ID</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>A 24-bit number that is broadcast by a base station as part of its Base Station ID.</p> <p><a class="arrow-link" href="/products-services/regauth/bopid/">Learn More About IEEE 802.16 Operator ID</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Standard Group MAC Address</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>NOTE: For Standards Development use ONLY. A Universally Administered Address Block allocated for the assignment of Group MAC Addresses for use in Standards.</p> <p><a class="arrow-link" href="/products-services/regauth/grpmac/">Learn More About Standard Group MAC Address</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >IEEE 1667 Silo Type Identifier (STID)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>IEEE 1667 specifies the interface to and behavior of several silos (e.g., Probe Silo, TCG Storage Transport Silo, Password Silo, and Smart Card Transport Silo). External silos may be defined outside of the standard, be either public or private, and involve third-party licensing. Guidelines for external silos are specified in IEEE 1667.</p> <p><a class="arrow-link" href="/products-services/regauth/stid/">Learn More About STID</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >IEEE Std 1588™ sdoId</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>The sdoId (Standards Development Organization Identifier) is a protocol attribute, per IEEE Std 1588, that identifies the PTP Profile in use by the PTP Instance.</p> <p><a class="arrow-link" href="/products-services/regauth/sdoid/">Learn More About IEEE Std 1588™ sdoId</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >CtlSeriesId</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>An identifier for a Certificate Trust List series allowing for the management of roots of trust within the certificate management system as specified in IEEE Std 1609.2.1. The assignee of an CtlSeriesId serves as the SCMS Manager of that CtlSeriesId.</p> <p><a class="arrow-link" href="/products-services/regauth/ctlseriesid/">Learn More About CtlSeriesId</a></p> </div> </div> </div></div></div></div><h3 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h4 mt-5" >Registration Authority Governance and Additional Information</h3> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>The IEEE Registration Authority operates under the direction of the <a href="/about/bog/">IEEE SA Board of Governors</a>.</p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Registration Authority Committee (RAC)</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Oversight committee that assists standard developing organizations to establish unambiguous, sustainable registration authorities.</p> <p><a class="arrow-link" href="/about/bog/rac/">Learn More About the Registration Authority Committee (RAC)</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Tutorials</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Informative documents to assist with learning more about IEEE Standard Association Registries.</p> <p><a class="arrow-link" href="/products-services/regauth/tut/">Learn More About Tutorials</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Credit Application Form</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>For those interested in paying for a registry via purchase order.</p> <p><a class="arrow-link" href="/wp-content/uploads/import/documents/forms/creditapp_form.pdf" target="_blank" rel="noopener">Learn More About Credit Application Form</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >FAQs</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>The commonly most asked questions about our registries and how they are used.</p> <p><a class="arrow-link" href="/faqs/regauth/">View Frequently Asked Questions</a></p> </div> </div> <h4 style="text-align: left" class="vc_custom_heading vc_do_custom_heading h5 mt-5" >Contact Us</h4> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Contact Registration Authority staff via <a href="/cdn-cgi/l/email-protection#ef868a8a8ac29d8a88869c9b9d8e9b868081c28e9a9b87809d869b96af868a8a8ac1809d88"><span class="__cf_email__" data-cfemail="e089858585cd928587899394928194898f8ecd819594888f92899499a089858585ce8f9287">[email protected]</span></a>, snail mail, phone or fax.</p> <p><a class="arrow-link" href="/products-programs/regauth/contact/">View Contact Information</a></p> </div> </div> </div></div></div><div class="left wpb_column vc_column_container vc_col-sm-4" 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