This is the fourth of a series of technical status updates intended to inform a technical audience on progress in signing the root zone of the DNS. RESOURCES Details of the project, including documentation published to date, can be found at http://www.root-dnssec.org/. We'd like to hear from you. If you have feedback for us, please send it to rootsign(a)icann.org. DOCUMENTATION The following draft document was recently published: - Resolver Testing with a DURZ - TCR - Proposed Approach to Root Key Management ICANN has begun the process of formally soliciting expressions of interest for volunteers from the technical community to act as Trusted Community Representatives. These volunteers will witness cryptographic key ceremonies and also carry out various important roles relating to KSK key management. For more information, see: http://www.icann.org/en/announcements/announcement-12apr10-en.htm Expressions of interest can be submitted here: http://www.root-dnssec.org/tcr/ DEPLOYMENT STATUS KSR exchanges continue between production platforms at VeriSign and ICANN. Build-out of KSK Key Ceremony facilities at ICANN continues, and both facilities (east- and west-coast USA) are expected to be ready on schedule. The incremental deployment of DNSSEC in the Root Zone is being carried out first by serving a Deliberately Unvalidatable Root Zone (DURZ), and subsequently by a conventionally signed root zone. Discussion of the approach can be found in the document "DNSSEC Deployment for the Root Zone", as well as in the technical presentations delivered at RIPE, NANOG, IETF and ICANN meetings. Twelve of the thirteen root servers have now made the transition to the DURZ. No harmful effects have been identified. Some early analysis of packet captures from many root servers surrounding each event was recently presented at the IETF meeting in Anaheim, CA, USA and can be found with other presentation materials at http://www.root-dnssec.org/presentations/. PLANNED DEPLOYMENT SCHEDULE Already completed: 2010-01-27: L starts to serve DURZ 2010-02-10: A starts to serve DURZ 2010-03-03: M, I start to serve DURZ 2010-03-24: D, K, E start to serve DURZ 2010-04-14: B, H, C, G, F start to serve DURZ To come: 2010-05-05: J starts to serve DURZ 2010-07-01: Distribution of validatable, production, signed root zone; publication of root zone trust anchor (Please note that this schedule is tentative and subject to change based on testing results or other unforeseen factors.) A more detailed DURZ transition timetable with maintenance windows can be found in the document "DNSSEC Deployment for the Root Zone", the most recent draft of which can be found on the project web page at http://www.root-dnssec.org/.