The Astaboran Northern Eastern Sudanic, or Eastern k Sudanic languages form one of two primary divisions of the Eastern Sudanic languages

Eastern Sudanic languages

Ehret 2001 [1984]Ehret, published in 2001 but circulating in manuscript form since at least 1984, calls the family "Eastern Sahelian", and idiosyncratically adds the Kuliak languages and Berta, which Bender assigns to higher-level branches of Nilo-Saharan, and reassigns Nyima to the southern branch...

. They are characterized by having a /k/ in the pronoun "I/me", as opposed to the Kir–Abbaian (Southern) languages, which have an /n/.

The most famous Astaboran language is Nubian

Nubian languages

The Nubian language group, according to the most recent research by Bechhaus-Gerst comprises the following varieties:# Nobiin ....

. Assuming it's Nilo-Saharan, the ancient Meroitic language

Meroitic language

The Meroitic language was spoken in Meroë and the Sudan during the Meroitic period and went extinct about 400 CE. It was written in two forms of the Meroitic alphabet: Meroitic Cursive, which was written with a stylus and was used for general record-keeping; and Meroitic Hieroglyphic, which was...

appears on limited evidence to be closest to languages of this group, such as Nyima and Nubian.