Best Bulk Google Index checker ?

There are many bulk Google indexing checker (i.e. tool where you can check in bulk whether websites are indexed in Google. Usually these tools allow you to check at one time 20 or 50 or 100 or 200 sites at a time). But have yet to find a very accurate one.
Using this tool https://ift.tt/1nnLazx but it is not very accurate
Anyone can recommend a more accurate checker/
Thanks in advance
Cheers!

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