On this page there’s 3 highlights (view in Baymard Premium) outlining what Apple are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 207 address validator examples.)

The screenshot was taken on June 13, 2016 and depicts Apple’s Address Validator. In total, we’ve reviewed 55 of Apple’s page designs. To see them all, visit the full Apple UX case study.