If you have already purchased the domain name from NameSilo, then go NameSilo account and proceed to Manage My Domains.
Click on Manage DNS for this domain
Click on A to add the following IPV4 address
Add the IPV4 address in this format below. Leave the HOSTNAME field empty. Click SUBMIT.
Repeat the process for the other IPV4 addresses.
Go to your Blogger Settings to generate the CNAMEs.
Copy those two CNAMEs
Click on CNAME. Add the first CNAME as shown in the screenshot below. Click on SUBMIT.
Add the second CNAME as shown in the screenshot below. Click on SUBMIT.
Check that you added everything just like the screenshot as shown below.
Afte that go back to your blogger settings and Save. It may take up to 15 minutes for the settings to save.
Once that is done, Click on Edit.
Tick the box as shown below and save.
If you follow the steps closely, you should be able to redirect your Blogspot to a custom domain with NameSilo. If you have any difficulties doing so, you can reach me by leaving a comment, contact me via email or any of my social media platforms.