Integration Panel

The Integration Panel (IP) is ICANN’s expert body charged with turning the many script-specific proposals submitted by community Generation Panels (GPs) into a single, safe, and internally-consistent Root Zone Label Generation Ruleset (RZ-LGR). It was constituted on September 6, 2013.

Members

• Asmus Freytag (Unicode architecture)
• Marc Blanchet (DNS/IDN engineering)
• Michel Suignard (Unicode & ISO/IEC 10646 editor)
• Nicholas Ostler (historical linguistics)
• Wil Tan (registry and security engineering)

All technical decisions must be unanimous.

Mandate and Workflow

The team is responsible for creating and maintaining the Maximal Starting Repertoire (MSR), which is a conservative master list of Unicode code points that are eligible for use at the top level. Each successive version is a strict superset of the previous one, ensuring backward compatibility. As of September 2025, there are 6 Versions.

After a Generation Panel selects a subset of its script's code points from the current MSR, adds variant mappings and writes script-specific Whole-Label Evaluation (WLE) rules. The IP checks every proposal for syntax, symmetry, MSR conformance and cross-script consistency. When the IP has created such a set, it is posted for Public Comment using the prevailing ICANN procedures. Based on the comment received, the IP merges all scripts that have passed review into the next RZ-LGR release.

Internationalized Domain Name

International Organization for Standardization