Austrian phone number, the +43 country code or the 0 trunk prefix then six to thirteen digits, since Austrian subscriber numbers vary in length. The slash is a separator here, as Austrian writing uses it between the area code and the number.
Label: AT_PHONE
(?<![\w+])(?:\+43|0)(?:[\s./-]?\d){6,13}(?!\w)Die Zentrale erreichen Sie unter +43 1 53340. → +43 1 53340Mobil bin ich unter 0664/1234567 erreichbar. → 0664/1234567Die Klappe lautet 0123Bestellnummer 4711Tags: at, contact