The Central Bank has warned people not to access financial services from Legitime Loan Service as it is not an authorised firm.
The company advertises the availability of loans on its website but holds no authoritisation from the Central Bank as a retail credit firm.
In a statement, the Central Bank said it is a criminal offence for an unauthorised person or firm to provide financial services that would require an authorisation under the relevant legislation.
Consumers are advised to check the Central Bank registers online to find out if a firm or individual is authorised.
The names of 358 unauthorised firms have been published by the financial watchdog since it obtained the power to do so in August 1998.