Tommy Jensen
Pronouns: he/him
Tommy Jensen has actively participated in the IETF since 2019, mostly on discovery and usage of encrypted DNS, deployment of IPv6, and advocacy for Digital Emblems. He previously worked for eight years at Microsoft, six of those on the Windows Core Networking team as a PM for the DNS and DHCP client, HTTP client and server, and IPv6 stack. His work focused on OS support for DoH and DoT, CLAT, expansion of HTTP capabilities, and OS integration of "Protective DNS" (ZTDNS). Since then, he has been working at Cloudflare on networking security provided by the WARP client.
Tommy has a Computer Science undergraduate degree and is continuing to work on a Masters of Legal Studies focused on cybersecurity and digital privacy. He was added to the IPv6 Hall of Fame in 2025. His IETF work is conducted using this GitHub account: https://github.com/tojens-ietf
Roles
| Role | Group | |
|---|---|---|
| Area Director | DNS Directorate (dnsdir) | tojens.ietf@gmail.com |
| Area Director | Internet Area (int) | tojens.ietf@gmail.com |
| Area Director | Adaptive DNS Discovery (add) | tojens.ietf@gmail.com |
| Area Director | BPF/eBPF (bpf) | tojens.ietf@gmail.com |
| Area Director | Internet of Things Directorate (iotdir) | tojens.ietf@gmail.com |
| Area Director | DNS Delegation (deleg) | tojens.ietf@gmail.com |
| Area Director | Dynamic Host Configuration (dhc) | tojens.ietf@gmail.com |
| Area Director | Network Time Protocols (ntp) | tojens.ietf@gmail.com |
| Area Director | Distributed Mobility Management (dmm) | tojens.ietf@gmail.com |
| Area Director | Delay/Disruption Tolerant Networking (dtn) | tojens.ietf@gmail.com |
| Area Director | Internet Engineering Steering Group (iesg) | tojens.ietf@gmail.com |
| Area Director | Internet Area Directorate (intdir) | tojens.ietf@gmail.com |
| Member | IAB-ISOC Policy Coordination (iabisoc) | tojens.ietf@gmail.com |
External Resources
| Name | Value |
|---|---|
| GitHub Username | tojens-ietf |
RFCs (3)
| RFC | Date | Title | Cited by |
|---|---|---|---|
| RFC 9462 | Nov 2023 | Discovery of Designated Resolvers | 7 RFCs |
| RFC 9463 | Nov 2023 | DHCP and Router Advertisement Options for the Discovery of Network-designated Resolvers (DNR) | 10 RFCs |
| RFC 9872 | Sep 2025 | Recommendations for Discovering IPv6 Prefix Used for IPv6 Address Synthesis |
Active Internet-Drafts (2)
Expired Internet-Drafts (17)
- draft-tdj-dnsop-associated-prefixes-for-domains
- draft-tojens-dnsop-do-not-accommodate-udp53
- draft-jaked-cared
- draft-tojens-dhcp-option-concat-considerations
- draft-haberman-digital-emblem-ps
- draft-linker-digital-emblem
- draft-jens-7050-secure-channel
- draft-thomson-httpbis-alt-svcb
- draft-boucadair-add-deployment-considerations
- draft-pauly-add-resolver-discovery