German phone number, the +49 or 0 prefix then an area code and a subscriber number, separated by a space, a slash or a dash as German writing does. A lookbehind replaces the word boundary, which does not anchor before a + sign.
Label: DE_PHONE
(?<![\w+])(?:\+49|0)[\s/-]?\d{2,5}[\s/-]?\d{3,10}(?!\d)
Rufen Sie +49 30 1234567 an. → +49 30 1234567Zentrale 0221/1234567 erreichbar. → 0221/1234567Nummer 1234567 fehltModell C+49 30 1234567Tags: de, contact