# Problem with regex?

**URL:** <https://discourse.pi-hole.net/t/problem-with-regex/26747>\
**Category:** Help\
**Created:** [January 9, 2020, 9:53am UTC](https://discourse.pi-hole.net/t/problem-with-regex/26747 "2020-01-09T09:53:04Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jpgpi250](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/jpgpi250/32/286_2.png) [@jpgpi250](https://discourse.pi-hole.net/u/jpgpi250)\
**Post date:** [January 9, 2020, 4:56pm UTC](https://discourse.pi-hole.net/t/problem-with-regex/26747/3 "2020-01-09T16:56:32Z")

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@anon55913113, @DL6ER

In the [cname topic](https://discourse.pi-hole.net/t/apply-pi-hole-blocking-to-cnames/25445), @anon55913113 presented a [script](https://discourse.pi-hole.net/t/apply-pi-hole-blocking-to-cnames/25445/71) to create dummy zone files to block resolving, using unbound.

- Would this technique be useful to block the TXT queries?
- What would be the unbound files, configuration, needed to effectively block `tracker.coppersurfer.tk`?
- Alternatively, would it be possible to block the domain, using a dnsmasq `txt-record` (see [man](http://www.thekelleys.org.uk/dnsmasq/docs/dnsmasq-man.html) page)? How would such a dummy `txt-record` look like?

Thanks for your time and effort.

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_[View the full topic](https://discourse.pi-hole.net/t/problem-with-regex/26747)._