tō.nz

This domain demonstrates the use of Internationalised Domain Names (IDNs) and supports the principle of Universal Acceptance — ensuring that all valid domain names and email addresses work consistently across applications, systems, and networks.

Universal Acceptance is an active area of standards development and operational coordination within the Internet community. Relevant references include:

• RFC 5890 — Internationalized Domain Names for Applications (IDNA)
• RFC 5891 — IDNA Protocol
• RFC 6530 — Internationalized Email
• IETF UTA Working Group (Email Address Internationalization)
• ICANN Universal Acceptance Program