question Best bulk availability checker ?

I use www.namecheckr.com to search extension availability, and www.godaddy.com. www.name.com is also good but limited to 100 bulk searches, whereas GoDaddy shows 500

The fastest the i have found is eurodns, check it out

Dynadot is decent.

I tried to search a bunch of 500 names at Godaddy Bulk Search. Results: 495 registred and 4 available. So... (495+4 = 499). I tried again one minute later and... 496 registred and 4 available. What do you think about this?

My favorite is
Name.com/names
And
Marcaria.com for specific ccTLDs

https://rankz.io/tools/bulk-domain-availability-checker
best one till that 20k in one go

the best
https://www.dynadot.com/