How to extract Top Level Domains from events? - Splunk Community

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I need a query that extracts TLDs from events and compares the results with a lookup table with blocklisted TLDs

I tried to use

sourcetype=<sourcetypename> |rex field=_raw "(?<TLD>\.\w+?)(?:$|\/)" | table TLD

It returned TLDs but included values I think maybe part of IPs e.g. .33, .136, .74 etc.

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