> For the complete documentation index, see [llms.txt](https://docs.glesys.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.glesys.com/products/connectivity/domains-and-dns/details/service-description.md).

# Service description

Version 2026.06.02

***

Our Authoritative DNS service provides a reliable and highly available DNS platform for managing domain records. The service is built on a geographically distributed Anycast network and enables customers to manage DNS zones through both the Glesys Control Panel and API.

### Common use cases

The service is commonly used for:

* Public DNS hosting
* Infrastructure automation
* Dynamic DNS updates
* Certificate validation using DNS-01 challenges
* CI/CD and Infrastructure-as-Code integrations

The API enables DNS management to be integrated into deployment and operational workflows.

### Architecture

The platform is built on a distributed Anycast DNS architecture.

DNS infrastructure is geographically distributed across multiple locations and designed with redundancy to provide high availability and resilience.

DNS records can be managed through the Glesys Control Panel or API, allowing integration with automated deployment and operational workflows.

### Regional availability

The service is delivered through a geographically distributed DNS infrastructure.

### Technical specification

The service provides DNS zone management through the Glesys Control Panel and API. Supported functionality and DNS record types are listed below.

| **Customer self-service**             | Yes, managed in the control panel |
| ------------------------------------- | --------------------------------- |
| **API support**                       | Yes                               |
| **DNS zone export**                   | Yes                               |
| **DNS zone import**                   | No                                |
| **Secondary DNS**                     | No                                |
| **Zone transfers (AXFR)**             | No                                |
| **Incremental zone transfers (IXFR)** | No                                |
| **Geographic redundancy**             | Yes                               |
| **Multi-node replication**            | Yes                               |

### Supported record types <a href="#integrated-backup" id="integrated-backup"></a>

| **A**     | Yes |
| --------- | --- |
| **AAAA**  | Yes |
| **ALIAS** | Yes |
| **CAA**   | Yes |
| **CNAME** | Yes |
| **MX**    | Yes |
| **NS**    | Yes |
| **PTR**   | Yes |
| **SOA**   | Yes |
| **SRV**   | Yes |
| **TXT**   | Yes |

### Responsibilities

| **DNS infrastructure platform**            | Glesys   |
| ------------------------------------------ | -------- |
| **DNS node operation and maintenance**     | Glesys   |
| **DNS zone management**                    | Customer |
| **DNS record management**                  | Customer |
| **API credential managemnet**              | Customer |
| **Domain registration**                    | Customer |
| **Domain delegation to Glesys nameserver** | Customer |