hreflang="wa"

wa is a valid hreflang value for Walloon.

Language: Walloon (wa, ISO 639-1)

Example

<link rel="alternate" hreflang="wa" href="https://example.com/wa/" />

The code is case-insensitive for Google. The conventional spelling is a lowercase language, a title-case script and an uppercase region: wa.

Without a region, the annotation targets every Walloon speaker regardless of country. Regional versions sit next to the language-only version in one cluster.