ComReg has established a deadline of February 25 for businesses and service providers managing bulk SMS traffic to complete their registration.
Locals might get fewer scam texts with new measures being introduced to combat them.
The Communications Regulator is introducing a register to reduce the number of scams.
Business names and brands not registered will have their text messages to customers marked as 'Likely Scam' and will be blocked later this year.
According to research by consultants Europe Economics, scam calls and texts cost Irish businesses and consumers over €300 million annually, with approximately €115 million linked to scam texts alone.