---
title: DNS
summary: null
url: https://www.fastly.com/documentation/reference/api/dns
---

[Fastly DNS](https://www.fastly.com/documentation/guides/platform/fastly-dns/about-fastly-dns/) is our authoritative DNS service that leverages Fastly's global, high-performance edge network to serve DNS query responses.

- [TSIG Keys](https://www.fastly.com/documentation/reference/api/dns/tsig-keys/) - A TSIG (Transaction Signature) key is set of shared credentials used to secure zone transfers between DNS servers.
- [Zones](https://www.fastly.com/documentation/reference/api/dns/zones/) - A zone is a specific segment of the Domain Name System (DNS) namespace that can be managed and maintained on Fastly DNS.