ACMA ordered Casino Jax, Mirax Casino, Wild Fortune Casino, Kosmonaut Casino, Slotozen, Rolling Slots, N1 Bet Casino and No Deposit Kings to be blocked.
The operators were deemed to be operating illegally in the country and in breach of the Interactive Gambling Act 2001.
ACMA requested that Australian internet service providers block access to the eight websites.
Since ACMA made its first blocking request, 709 illegal gambling and affiliate websites have been blocked, while 180 have also pulled out of Australia since ACMA began enforcing new illegal offshore gambling rules in 2017.
The latest blockings come after ACMA last month also requested the blocking of Pokie Surf, 24 Casino, Stellar Spins, Olympia Casino, Rock n Reels and Boomerang Casino for breaching the Interactive Gambling Act 2001.
Also last month, Noah Rose, a sole trader operating as BetDeluxe, to pay AU$50,172 as part of its crackdown on spam-unsubscribing rules.
An ACMA investigation found BetDeluxe sent more than 104,000 SMS messages without an unsubscribe function and over 820,000 SMS texts that did not include the sender’s contact details.
Messages were sent between December 2021 and February 2022 and advertised a “cheeky punt” and “VIP service” on sports and racing, as well as promoted bonus bets and money-back offers.