Anaal Nathrakh started off in 1998 as a raw black metal band. Two demos were released in 1999 entitled, respectively Anaal Nathrakh and Total Fucking Necro. Following this, the band were signed by indie record label Mordgrimm, on which the duo's debut album was released. The Codex Necro, released in 2001, pursued the raw black metal sound the band had at this point.

In 2002, Anaal Natrakh's first two demos were compiled into a single ten-track disc entitled Total Fucking Necro. This was released by another UK underground metal label, Rage Of Achilles. 2003 saw the release, once again on Mordgrimm, of the band's first EP, When Fire Rains Down from the Sky, Mankind Will Reap As It Has Sown.

In 2004, Anaal Nathrakh released their sophomore full-length effort, Domine Non Es Dignus on French label Season of Mist.

Two years later, in 2006, the group's third album was released. Entitled Eschaton (a form of prophecy concerning the end of the world), this album was even more of a departure from the band's raw black metal roots. It placed further emphasis upon the grindcore elements of the music and added clean vocals. This album featured guest appearances by Shane Embury of Napalm Death and Attila Csihar of Mayhem among others.

The album Hell Is Empty and All the Devils Are Here was released through the band's new record label, FETO Records, in October 2007.

The latest album In the Constellation of the Black Widow was released June 29, 2009. The song 'Satanarchrist', from their demos, was re-recorded for this album.