We've continued reduce waste and make our meetings more sustainable over the past year. We've also calculated the IETF's carbon footprint as part of a multi-year net zero effort. Read the full update for 2025: https://www.ietf.org/blog/net-zero-update-2025/

WATCH! Working sessions at #IETF124 start today with the first livestream begins at 2200 UTC on 3 November. Check out the IRTF Open session with always-excellent Applied Networking Research Prize (ANRP) talks: https://www.ietf.org/live/

In January, the AI Preferences (AIPREF) WG began work to make it easier to express how AI models should use Internet content. After extensive discussion and collaboration at an interim meeting earlier this month, a new proposal is being considered: https://www.ietf.org/blog/ai-pref-update/

The NETwork MODeling (NETMOD) WG is getting ready to publish the long-awaited updated versioning scheme for YANG modules published by the IETF. Read about importance and impact YANG Module Versioning and Semver will have on Internet-Draft authors: https://www.ietf.org/blog/yang-module-updates/

ICYMI: Tracking standards adoption, involved in deployments and operations, or just curious about emerging Internet protocol trends? The "What's new at the IETF?" presented at the #RIPE91 meeting this week is for you! https://ripe91.ripe.net/programme/meeting-plan/sessions/17/CGDZGZ/

UPDATED! Check out the newly-updated Suggested "Sessions for Getting Familiar with New Topics" post to see what's coming up at #IETF124 Montreal 1-7 November: https://www.ietf.org/blog/ietf124-new-topics/

Don't forget! #IETF124 Montreal early registration cut off is 20 October 2025 UTC 23:59. Join 1000+ leading technologists working on emerging Internet technologies 1-7 October in Montreal and online: https://www.ietf.org/meeting/124/

The final agenda for #IETF124 Montreal on 1-7 November is now published! Check out the details of the upcoming #IETFHackathon, 100+ working sessions, and more. Register today before early registration rates end on 20 October. More information at: https://www.ietf.org/meeting/124/

Looking for new topics at the upcoming #IETF124 Montreal meeting 1-7 November? Check out sessions likely to include discussions and proposals accessible to Internet technologists whether they are new to the IETF or long-time participants: https://www.ietf.org/blog/ietf124-new-topics/

If it were widely deployed, technology developed in the #SIDRops Working Group could quickly detect and defeat route hijack attacks that cause malicious rerouting of Internet traffic. Read more about a recent event affecting DNS: https://www.ietf.org/blog/sidrops-and-avoidable-route-hijacks/

The #IETF124 Montreal preliminary agenda is published! Details of the #IETFHackathon, 100+ working sessions scheduled for 1-7 November are now available. Get registration information and more at: https://www.ietf.org/meeting/124/

Registration is now open for #IETF125 Shenzhen! Plan to join 1000+ leading Internet technologist in person and online 14-20 March 2026 for 100+ working sessions, an #IETFHackathon, and more. Details at: https://www.ietf.org/meeting/125/

DEADLINE: #IETF124 Birds-of-a-Feather (BOF) are due UTC 23:59 on 19 September 2025! Organizing a Birds-of-a-Feather (BOF) session is one way to bring a topic of discussion or possible new work the attention of the IETF community. More info at: www.ietf.org/process/bofs/

REMINDER: Super early registration for #IETF124 Montreal ends at UTC 23:59 on 15 September 2025! Don't miss out on joining 1000+ leading Internet technologists from around the world 1-7 November in-person or online. More info at: https://www.ietf.org/meeting/124/

The maintenance has been complete. All services are available.

REMINDER: IETF Datatracker, Mail Archives, and other services will be unavailable during a maintenance window for IETF IT services starting at 1900 UTC on 14 August 2025.

Have an idea for a topic of discussion or possible new work in the IETF? Organizing a Birds-of-a-Feather (BOF) session is one way to bring it to the attention of the IETF community. Submissions are being accepted now for BOFs during #IETF124. More info at: www.ietf.org/process/bofs/

IETF IT service window: A 2-hour service window starting at 1900 UTC on 14 August 2025 is planned to allow a change in the underlying cloud infrastructure, improving performance, reliability, and manageability of the affected services. Read more: www.ietf.org/blog/it-infr...

The #IETF123 @irtf.org Open Session featured Haarika Manda and Hendrick Chech presenting their ANRP-winning research on Internet access inequities and LEO satellite network measurements and analysis. Watch the full presentations: www.ietf.org/blog/ietf123...

The #IETF123 meeting is wrapping up! 1700+ participants around the world came together—in Madrid & online—to work on emerging Internet technologies. Thanks to host Ericsson and to all the meeting sponsors for their support. On demand recordings let you watch any of the 100+ sessions: ietf.org/live/

More #IETF123 livestreaming! "Migrating Telecom to Quantum-Resistant Cryptography on a Global Scale" at 11:15 UTC on 24 July 2025 presented by John Preuß Mattsson, an expert in cryptographic algorithms and security protocols at Ericsson Research: www.ietf.org/live/ietf123...

Watch select sessions from #IETF123 Live! Starting on 23 July with the @iab.org open session and the plenary session. And, recordings from all other meeting sessions are available on demand: www.ietf.org/live/

The #IETF123 meeting is underway! More than 1500 participants around the world—in Madrid and online—are working on emerging Internet technologies through 25 July 2025. Thanks to host Ericsson, and to all the meeting sponsors for their support: www.ietf.org/meeting/123/

Looking to get started in something new? These #IETF123 meeting sessions are likely to include discussions and proposals that are accessible to a broad range of Internet technologists whether they are new to the IETF or long-time participants: www.ietf.org/blog/ietf123...

The AI Preferences (AIPREF) Working Group began work this year to make it easier to express how AI models should use Internet content. Work is well underway on a compressed timeline for delivery. Read the latest progress update and the path ahead: www.ietf.org/blog/ai-pref...

The #IETF123 Madrid final agenda is now published! See what's planned for the 100+ sessions, #IETFHackathon, and more 19-25 July 2025. If you haven't already, register today to join 1000+ leading technologists from around the world in-person or online: www.ietf.org/meeting/123/

Registration is now open for #IETF124 Montreal (1-7 November 2025) hosted by Comcast and NBCUniversal ! Plan to join 1000+ leading Internet technologists from around the world in-person and online for 100+ working sessions and more, including an #IETFHackathon : www.ietf.org/meeting/124/

The updated and improved New Participant Program will continue at #IETF123 Madrid (19-23 July)! After overwhelmingly positive feedback on the first edition at #IETF122, registration is now open for the expanded program at #IETF123. Read more: www.ietf.org/blog/new-par...

Welcome to Verisign as the newest IETF Global Host—a multi-year commitment at the highest tier of meeting sponsorship! The commitment and generous contributions of Global Hosts and sponsors provides critical support for the work of the IETF community: www.ietf.org/blog/global-...

The 2024 edition of the IETF Annual Report is now available! Read it today for a summary of IETF, Internet Architecture Board ( @iab.org ), Internet Research Task Force ( @irtf.org ), and RFC Editor community activities from last year: www.ietf.org/blog/annual-...

REMINDER: Super early registration for #IETF123 ends UTC 23:59 on 2025-06-02! Register now to join 1000+ leading Internet technologists from around the world 19-25 July 2025 in Madrid or online. More info and registration at: www.ietf.org/meeting/123/

At #IETF122 Bangkok, a special session about the upcoming World Summit on Information Security (WSIS) 20 year review provided an overview of how the IAB is engaging in this opportunity to recommit to the multistakeholder approach to Internet governance: www.ietf.org/blog/technic...

REMINDER! If you have a topic for discussion or an idea about possible work to share during #IETF123, Birds of a Feather (BOF) sessions are one way to get initial conversations started. Consider submitting a BOF proposal by 23 May. More information at: www.ietf.org/process/bofs/

A Journey from Surathkal to the IETF: #IETF122 Bangkok marked the first in-person participation for final-year undergraduate students majoring in Computer Science and Engineering at the National Institute of Technology Karnataka (NITK) in India. Read more: www.ietf.org/blog/our-fir...

Do you have a topic for discussion or an idea about possible work to share during #IETF123? Birds of a Feather (BOF) sessions are one way to get initial conversations started. Consider submitting a BOF proposal by 23 May. More information at: www.ietf.org/process/bofs/

Super early registration for #IETF123 ends in less than a month! Register today to join 1000+ leading Internet technologists from around the world 19-25 July 2025 in Madrid or online. Never participated in an IETF Meeting before? Check it out here: youtu.be/bXNb-Oa4UJw

During the #IETF122 Hackathon, a team from Mauritius, the United States, and Kenya implemented post-quantum cryptography components currently missing from widely-used open source software. Read more at: www.ietf.org/blog/open-so...

End-to-end encryption based on IETF-developed MLS is set be used on 100s of millions of #Android phones, Apple iPhones & other devices thanks to updated RCS specifications, enabling interoperable encryption between different platforms for the first time: www.ietf.org/blog/rcs-ado...

We are thrilled to share that @cisco.com has contributed new equipment valued at US$1.3M to support IETF meeting networks that provide unsurpassed performance to the more than 1000 participants who gather onsite and remotely around the world 3x each year: www.ietf.org/blog/cisco-e...

The Internet Research Task Force (IRTF) Open session at #IETF122 featured Applied Networking Research Prize (ANRP) presentations on using Large Language Models (LLMs) to support network configuration and on secure collaborative path control in BGP: Watch: www.ietf.org/blog/ietf122...

Did you miss a session at #IETF122 Bangkok hosted by Juniper Networks last week? Watch recordings of all sessions on-demand as more than 1200 leading technologists gathered for more than 100 working sessions, the IETF Hackathon, and more: www.ietf.org/live/

Thanks to #IETF122 Bangkok host Juniper Networks, Gold Sponsors Akamai, Huawei and Ericsson, and all the other IETF sponsors supporting the global community that develops technologies at the foundation of the Internet! Check out livestreams at: www.ietf.org/live/

It's underway! The week of #IETF122 Bangkok hosted by Juniper Networks has kicked off with the #IETFHackathon. Select sessions are streamed live and all sessions are available on demand after the meeting. Find links and more information at: www.ietf.org/live/

It's almost time for #IETF122 Bangkok! If you haven't already, check out the Suggested Sessions for Getting Familiar with New Topics post. There's still time to register for in-person or remote participation, too! www.ietf.org/blog/ietf122...

A sustainable Internet: How to get there from here. After a successful side meeting during the #IETF121 meeting, the new Sustainability and the Internet (SUSTAIN) Proposed Research Group will have its first meeting during #IETF122 Bangkok. Learn more: www.ietf.org/blog/sustain...

IETF email service issues have been resolved. All messages in the queue were delivered by 0700 UTC on 2025-03-04 and the system is now keeping up. More at: www.ietf.org/blog/email-d...

As of 2025-03-03 23:23 UTC we are experiencing delays—sometimes over 4 hours—in delivering messages to IETF email lists. We are working on short-term and long-term fixes and will update this post as the status evolves: www.ietf.org/blog/email-d...

Don't forget! The early registration deadline for #IETF122 Bangkok hosted by Juniper Networks is 3 March 2025 at 23:59 UTC! Learn more and sign up today to join 1000+ Internet technologists from around the world in-person or remotely: www.ietf.org/meeting/122/

The newly-chartered AI Preferences (AIPREF) Working Group will work on standardizing building blocks that allow for the expression of preferences about how content is collected and processed for Artificial Intelligence models. Read more: www.ietf.org/blog/aipref-...

Looking for ways to get involved in new and emerging tech at the #IETF122 Bangkok meeting (15-21 March)? Check out the sessions with new work and topics of broad interest, including the #IETFHackathon. Onsite and remote registration is still available: www.ietf.org/blog/ietf122...