mirror of
https://github.com/fleschutz/PowerShell.git
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54 lines
1.7 KiB
PowerShell
54 lines
1.7 KiB
PowerShell
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<#
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.SYNOPSIS
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Checks DNS server
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.DESCRIPTION
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This PowerShell script checks the performance of public DNS server.
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.EXAMPLE
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PS> ./check-dns-server
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.LINK
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https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz | License: CC0
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#>
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function CheckDNS { param($IP, $Name)
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$StopWatch = [system.diagnostics.stopwatch]::startNew()
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$null = (nslookup heise.de $IP)
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[int]$Elapsed = $StopWatch.Elapsed.TotalMilliseconds
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" $IP ($Name) = $Elapsed ms "
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}
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try {
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"Checking performance of public DNS server..."
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CheckDNS 217.237.150.188 "1&1"
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CheckDNS 217.237.150.33 "1&1"
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CheckDNS 217.237.150.141 "1&1"
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CheckDNS 1.1.1.1 Cloudflare
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CheckDNS 1.0.0.1 Cloudflare
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CheckDNS 1.1.1.2 "Cloudflare with malware blocklist"
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CheckDNS 1.0.0.2 "Cloudflare with malware blocklist"
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CheckDNS 1.1.1.3 "Cloudflare with malware+adult blocklist"
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CheckDNS 1.0.0.3 "Cloudflare with malware+adult blocklist"
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CheckDNS 217.5.100.185 "Deutsche Telekom AG"
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CheckDNS 217.5.100.186 "Deutsche Telekom AG"
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CheckDNS 8.8.8.8 Google
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CheckDNS 8.8.4.4 Google
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CheckDNS 4.2.2.1 "Level3 one"
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CheckDNS 4.2.2.2 "Level3 two"
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CheckDNS 4.2.2.3 "Level3 three"
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CheckDNS 4.2.2.4 "Level3 four"
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CheckDNS 4.2.2.5 "Level3 five"
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CheckDNS 4.2.2.6 "Level3 six"
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CheckDNS 9.9.9.9 "Quad9 with malware blocklist, with DNSSEC"
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CheckDNS 9.9.9.10 "Quad9, no malware blocklist, no DNSSEC"
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CheckDNS 9.9.9.11 "Quad9, with malware blocklist, with DNSSEC, with EDNS"
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CheckDNS 9.9.9.12 "Quad9, with malware blocklist, with DNSSEC, NXDOMAIN only"
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CheckDNS 217.237.151.97 "Telekom München"
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CheckDNS 217.237.151.161 "Telekom Stuttgart"
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CheckDNS 217.237.150.141 "Telekom Ulm"
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exit 0 # success
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} catch {
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"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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