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Update default resolver source to publicdns.info#51

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riankellyjn-a11y wants to merge 1 commit intovortexau:masterfrom
riankellyjn-a11y:riankellyjn-a11y-patch-1
Open

Update default resolver source to publicdns.info#51
riankellyjn-a11y wants to merge 1 commit intovortexau:masterfrom
riankellyjn-a11y:riankellyjn-a11y-patch-1

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Summary

Updates the default resolver source URL in documentation examples from public-dns.info/nameservers.txt to a continuously-validated list sourced from publicdns.info.

Why

The upstream data at public-dns.info (powered by corny/dnscheck) has been dormant for years. Servers that have been down for years still appear in their raw list, which means users following the README examples are starting with a noisy, stale resolver list.

The replacement URL points to publicdns-resolvers, which:

  • Sources data from publicdns.info (probes 90,000+ resolvers every 72 hours)
  • Runs independent validation (A record queries + NXDOMAIN integrity)
  • Updates daily via GitHub Actions
  • Outputs a clean nameservers.txt in the same one-IP-per-line format

Changes

  • README.md: Updated CLI and Docker example URLs (2 lines changed)
  • No code changes — the -tL flag accepts any URL, so this is fully backwards compatible

Replace stale public-dns.info/nameservers.txt URL with actively maintained publicdns-resolvers list from publicdns.info. The old source (public-dns.info, powered by corny/dnscheck) has been dormant for years. The new source probes 90,000+ resolvers every 72 hours.
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