Tag Archives: dns

DNS over HTTPS (DoH), a cartoon intro

I like the cartoons that have been appearing for some time now over at Mozilla Hacks, in which they explain technical things in layman’s terms. The latest article again is a good one: first it explains regular DNS (pictured above), … Continue reading

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Look up DNS Records online with dnsrecords.io

Straightforward new tool by Spatie. Just enter a domain and *boom*. Open Source too. dnsrecords.io →dnsrecords.io Source (GitHub) →

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How and why the leap second affected Cloudflare DNS

At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic. This panic was caught … Continue reading

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When CCIEs get bored

$ traceroute 🙂

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Zero-config development with Apache’s VirtualDocumentRoot and xip.io

# Use name-based virtual hosting. NameVirtualHost *:80 UseCanonicalName Off # ~/Sites/ vhost configuration – sends foo.bar.dev to ~/Sites/bar/foo <VirtualHost *:80> VirtualDocumentRoot /Users/dave/Sites/%2/%1 <Directory "/Users/dave/Sites"> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> What that VirtualDocumentRoot … Continue reading

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xip.io – Wildcard DNS for any IP address.

xip.io is a magic domain name that provides wildcard DNS for any IP address. Say your LAN IP address is Using xip.io: resolves to www. resolves to mysite. resolves to foo.bar. resolves to …and … Continue reading

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