Ripuarian ( ; also Ripuarian Franconian; , , ripuarische Mundart, ripuarischer Dialekt, ripuarisch-fränkische Mundart, Ribuarisch, , Noordmiddelfrankisch) is a German dialect group, part of the West Central German language group. Together with the Moselle Franconian which includes the Luxembourgish language, Ripuarian belongs to the larger Central Franconian dialect family and also to the Rhinelandic linguistic continuum with the Low Franconian languages. It is spoken in the Rhineland south of the Benrath line — from northwest of Düsseldorf and Cologne to Aachen in the west and to Waldbröl in the east. The language area also comprises the north of the German-speaking Community of Belgium as well as the southern edge of the Limburg province of the Netherlands, especially Kerkrade (Kirchroa), where it is perceived as a variety of Limburgish and legally treated as such. The name derives from the Ripuarian Franks (Rheinfranken), who settled in the area from the 4th century onward. The most well known Ripuarian dialect is Kölsch, the local dialect of Cologne. Dialects belonging to the Ripuarian group almost always call themselves Platt (spelled in the Netherlands) like Öcher Platt (of Aachen), Bönnsch Platt (of Bonn), Eischwiele Platt (of Eschweiler), Kirchröadsj plat (of Kerkrade), or Bocheser plat (of Bocholtz). Most of the more than one hundred Ripuarian dialects are bound to one specific village or municipality. Usually there are small distinctive differences between neighbouring dialects (which are, however, easily noticeable to locals), and increasingly bigger differences between the more distant dialects. These are described by a set of isoglosses called the Rhenish fan in linguistics. The way people talk, even if they are not using Ripuarian, often allows them to be traced precisely to a village or city quarter where they learned to speak. Number of speakers About a million people speak a variation of Ripuarian dialect, which constitutes about one quarter of the inhabitants of the area. Penetration of Ripuarian in everyday communication varies considerably, as does the percentage of Ripuarian speakers from one place to another. In some places there may only be a few elderly speakers left, while elsewhere Ripuarian usage is common in everyday life. Both in the genuine Ripuarian area and far around it, the number of people passively understanding Ripuarian to some extent exceeds the number of active speakers by far. Estimates assume some ten, and up to twenty million speakers. Geographic significance Speakers are centred on the German city of Köln