The IONOS UK phone number is 0333 336 5691 and can be used to iron out any web hosting issues you encounter.
IONOS UK customer service number – 0333 336 5691
UK customers can phone the IONOS customer service number 0333 336 5691to report server eroors. For example if you get a 521 error on your hosting then phone the IONOS UK customer service team to discuss with an expert. This number can also be used to get support and discuss billing issues, such as overpayments or to request a refund.