Practical guides on DNS records, propagation, and keeping your domains healthy.
DNS Explained
A and AAAA records map domain names to IP addresses, making your website reachable. Here's how they work, what the difference between IPv4 and IPv6 is, and why an unexpected change is one of the most disruptive things that can happen to a domain.
DNS Explained
MX records tell the internet which servers accept email for your domain. Here's how they work, what the priority numbers mean, why most domains have several, and why an unexpected change is a serious alert.
DNS Explained
TXT records are the "miscellaneous drawer" of DNS, freeform text fields that now carry critical email authentication infrastructure. Here's what they are, what lives in them, and why changes to them matter.
Product Guide
An unexpected DNS change landed in your inbox. Here's how to determine whether it's planned maintenance, an honest mistake, or something that needs immediate attention, and what to do in each case.
Product Guide
Connect Cloudflare, DigitalOcean, GoDaddy, Namecheap, or Porkbun with a read-only API key and OneDollarDNS imports your hosts automatically and keeps importing new ones every day. Here's how to set up each provider, and what to do when a sync fails.
DNS Explained
NS records tell the internet which DNS servers are authoritative for your domain. Every other DNS record depends on them. Here's what they do, when they legitimately change, and why an unexpected NS change is almost never a good sign.
DNS Explained
Missing SPF, DKIM, or DMARC records is one of the most common reasons legitimate email gets flagged as spam. Here's what each record does and how to get them right.
DNS Explained
DNS changes don't take effect instantly. Here's why propagation can take hours, what actually controls the delay, and how to verify your records have updated worldwide.