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#!/bin/sh
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while read domain ; do
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fulldomain=$(echo $domain | rev).${domain}
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echo Checking ${fulldomain} ...
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has_ns=$(dig +short ${fulldomain} ns)
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# No NS server? potentially free
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if [ -z "$has_ns" ]; then
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echo "No ns for $fulldomain"
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echo $fulldomain >> tld_no_ns
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fi
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done < ./tld
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