Reduce # of domains to 100 for performance

Data/popular-domains.csv

@@ -1,182 +1,89 @@
 DOMAIN,
 a.root-servers.net,
-accounts.google.com,
-activity.windows.com,
-airbnb.at,
 airbnb.com,
-airbnb.de,
 aka.ms,
-alternate.de,
-api.dropboxapi.com,
 api.met.no,
-api.serenade.ai,
-api1.origin.com,
 arc.msn.com,
 arte.tv,
 assets.msn.com,
 amazon.com,
-amazon.co.uk,
-amazon.de,
-amazon.fr,
-amazon.it,
 b.root-servers.net,
-banking.ing-diba.de,
 bing.com,
-bing.de,
-bing.fr,
 bitbucket.org,
-blitzortung.org,
-bolt.dropbox.com,
 c.root-servers.net,
-catalog.gamepass.com,
-changelogs.ubuntu.com,
 client.dropbox.com,
-client.wns.windows.com,
-clients1.google.com,
-clients2.google.com,
-clients3.google.com,
-clients4.google.com,
 contacts.google.com,
 d.dropbox.com,
 d.root-servers.net,
-dasoertliche.de,
-deepl.com,
 dell.com,
-de.yahoo.com,
 discord.com,
 discordapp.com,
-dhl.de,
-download.windowsupdate.com,
 duckduckgo.com,
 e.root-servers.net,
 earth.google.com,
 ebay.com,
-ebay.de,
-ebay.fr,
-ebook3000.com,
 edition.cnn.com,
 f.root-servers.net,
 facebook.com,
-facebook.de,
-facebook.fr,
 flightradar24.com,
 fonts.google.com,
 fonts.googleapis.com,
-fonts.gstatic.com,
 foto-webcam.eu,
 foursquare.com,
 g.root-servers.net,
 github.com,
-github.map.fastly.net,
 gmail.com,
-google.at,
 google.com,
-google.de,
-google.fr,
-google.it,
-googleapis.com,
 gstatic.com,
 h.root-servers.net,
-holidaycheck.de,
-hornbach.de,
 i.root-servers.net,
-i.ytimg.com,
 IEEE.org,
 ibm.com,
 icons8.com,
 imap.googlemail.com,
-install.robertsspaceindustries.com,
-ipfs.io,
-ipv6.msftconnecttest.com,
 j.root-servers.net,
 k.root-servers.net,
 l.root-servers.net,
-launcher2.robertsspaceindustries.com,
-licensing.mp.microsoft.com,
 live.github.com,
-live.thunderbird.net,
-livepatch.canonical.com,
 login.live.com,
-longfiles.com,
 m.root-servers.net,
 mail.google.com,
-map.blitzortung.org,
 maps.google.com,
-maps.google.de,
-maps.google.fr,
 microsoft.com,
 mozilla.org,
-mtalk.google.com,
 music.google.com,
 news.google.com,
-news.google.de,
-news.google.fr,
 news.url.google.com,
 ntp.ubuntu.com,
-ogs.google.com,
 open.spotify.com,
 opera.com,
 photos.google.com,
 pixabay.com,
 play.google.com,
 plex.tv,
-presence.teams.microsoft.com,
-ptbtime1.ptb.de,
-ptbtime2.ptb.de,
-ptbtime3.ptb.de,
 redhat.com,
-reichelt.de,
-robertsspaceindustries.com,
-secure.download.dm.origin.com,
-semonkeys.net,
-settings.data.microsoft.com,
-settings-win.data.microsoft.com,
 sites.google.com,
 slashdot.org,
 speed.cloudflare.com,
 speedtest.net,
-ssl.gstatic.com,
 stackoverflow.com,
-start.thunderbird.net,
-static.nvidiagrid.net,
-storage.googleapis.com,
-substrate.office.com,
 sunnyportal.com,
-t-online.de,
-t0.gstatic.com,
 teams.microsoft.com,
-telemetry.dropbox.com,
-tile-service.weather.microsoft.com,
 time.windows.com,
-toggl.com,
-toom.de,
-track.toggl.com,
-translate.google.de,
-twitter.com,
-twitter.de,
 ubuntu.com,
 update.googleapis.com,
 wetter.com,
 wttr.in,
 www.apple.com,
 www.arte.tv,
-www.bbc.co.uk,
-www.bild.de,
 www.booking.com,
-www.cdc.gov,
 www.dropbox.com,
 www.ecosia.org,
 www.etsy.com,
 www.expedia.com,
 www.fleschutz.de,
-www.focus.de,
-www.foto-webcam.eu,
-www.golem.de,
 www.google.com,
-www.googleapis.com,
 www.gstatic.com,
-www.heise.de,
-www.hulu.com,
 www.instagram.com,
 www.msn.com,
 www.nasa.gov,
@@ -184,18 +91,11 @@ www.netflix.com,
 www.nytimes.com,
 www.paypal.com,
 www.redbull.com,
-www.schneier.com,
-www.techstage.de,
 www.tiktok.com,
 www.ufainc.com,
 www.walmart.com,
 www.whatsapp.com,
 www.whitehouse.gov,
 www.windy.com,
-www.wikipedia.at,
-www.wikipedia.de,
-www.wikipedia.fr,
 www.wikipedia.org,
-www.wired.com,
 www.youtube.com,
-www.zdf.de,

Scripts/check-dns.ps1

@@ -1,11 +1,11 @@
 <#
 .SYNOPSIS
-	Check DNS resolution 
+	Check the DNS resolution 
 .DESCRIPTION
-	This PowerShell script measures and prints the DNS resolution speed by using 200 popular domains.
+	This PowerShell script measures the DNS resolution speed (using 100 popular domains) and prints it.
 .EXAMPLE
 	PS> ./check-dns.ps1
-	✅ DNS resolves 156.5 domains per second
+	✅ DNS resolves 56.5 domains per second
 .LINK
 	https://github.com/fleschutz/PowerShell
 .NOTES
@@ -13,15 +13,15 @@
 #>
  
 try {
-	Write-Progress "⏳ Resolving 200 popular domain names..."
 	$table = Import-CSV "$PSScriptRoot/../Data/popular-domains.csv"
 	$numRows = $table.Length
+	Write-Progress "⏳ Resolving $numRows domain names..."
 
 	$stopWatch = [system.diagnostics.stopwatch]::startNew()
 	if ($IsLinux) {
-foreach($row in $table){$nop=dig $row.Domain +short}
+		foreach($row in $table){$nop=dig $row.Domain +short}
 	} else {
-foreach($row in $table){$nop=Resolve-DNSName $row.Domain}
+		foreach($row in $table){$nop=Resolve-DNSName $row.Domain}
 	}
 	Write-Progress -completed "."
 	[float]$elapsed = $stopWatch.Elapsed.TotalSeconds