I would not recommend blazingseo. i will explain why.
i had 50 dedicated ips with them , but they ONLY accept paypal and paypal loves to restrict accounts. so you have to call them and get account reset or they want you to add social security number ..... anyway blazing will try to bill paypal and when paypal fails, it deactivates all 50 that very second. they do not send notification "sorry billing has failed" or give even a few hours to correct issue with paypal. and there is no way to "re-activate 50 proxies" because blazing assigns them to someone else.
so then you have to e-mail or phone verify 50 IG accounts. i need a provider that accepts direct credit card , not just paypal and also one that holds proxies , while billing can be resolved.