RedundantDNS Learn
Guides and articles on multi-provider DNS
Outage write-ups and a registrar guide.
Articles
What recent outages mean for a zone on two DNS providers.
The AWS us-east-1 outage of October 20, 2025 was a DNS failure
An empty DNS record for DynamoDB's regional endpoint took down much of us-east-1 for about 15 hours. What failed, and what a second DNS provider would and would not have changed.
Two Cloudflare outages, November 2025 and February 2026: where DNS fits
A bad feature file on November 18, 2025 and withdrawn BGP routes on February 20, 2026. What broke, and what kept working.
13 outages in August 2026: resolution, management and the provider in the middle
Cloudflare logged 13 incidents in eight days, Namecheap lost DNS management for a day, Proofpoint's email domain stopped resolving.
Technical guides
Cloudflare Registrar and multi-provider DNS
Domains registered at Cloudflare Registrar can only use Cloudflare nameservers. What still works (subdomains, Multi-provider DNS) and how to transfer out step by step.