Create a DynDNS configuration

Create a dynamic DNS updater token for a hostname under the domain. The hostname must be the domain itself or a subdomain of it, and recordType must be A or AAAA. Store the returned token securely because it authorizes public DynDNS updates for this hostname.

Domains & DNS Domains

Authentication

Required API scope: write:domains

Use Authorization: Bearer <token> for API keys. Dashboard sessions may also use hostup_session.

Context

Path Parameters

id string required Example: dom_01hxa3b4c5d6e7f8g9h0j1k2m3

Public domain ID. Get it from GET /api/v2/domains `data[].id`. Do not invent this value; use the exact ID returned by the referenced API response.

Headers

Accept Example
Content-Type Example

Body

required
application/json
hostname string required · Example: home.example.com
recordType string · enum required · Example: A
A
AAAA

Responses

201 Created DynDNS configuration. The token is visible because write access is required.
id string required · Example: ddns_01hxa3b4c5d6e7f8g9h0j1k2m3
hostname string required · Example: home.example.com
recordType string · enum required · Example: A
A
AAAA
token string | null required · Example: 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef
lastIp string | null required · Example: 203.0.113.45
lastUpdatedAt string | null required · Example: 2026-04-27T12:00:00.000Z
updateCount integer required · Example: 12
enabled boolean required · Example: true
createdAt string | null required · Example: 2026-04-20T08:00:00.000Z
updatedAt string | null required · Example: 2026-04-27T12:00:00.000Z
400 Invalid request. The response body is an RFC 7807 Problem Details document.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
401 Unauthorized. Authentication is required.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
403 Forbidden. The caller lacks a required scope or does not own the resource.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
404 Not found. The resource does not exist or is not owned by the caller.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
429 Rate limited. Retry after the limit resets. 429 responses include `Retry-After` seconds plus `X-RateLimit-*` headers.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
500 Internal error. Retry later or contact support if the issue persists.
type string · Example: https://developer.hostup.se/errors/invalid_request
title string · Example: Validation failed
status integer · Example: 400
detail string · Example: The request body failed validation.
code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders
requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3
timestamp string · Example: 2026-04-27T12:34:56.000Z
errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode
errors[].detail string required · Example: `eppCode` is required for this transfer.
errors[].code string required · Example: missing_required
extensions object
POST https://cloud.hostup.se/api/v2/domains/{id}/dyndns
For AI assistants
View as Markdown
cURL 
curl -X POST "https://cloud.hostup.se/api/v2/domains/dom_01hxa3b4c5d6e7f8g9h0j1k2m3/dyndns" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "hostname": "home.example.com",
    "recordType": "A"
  }'
Response 
{
  "id": "ddns_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "hostname": "home.example.com",
  "recordType": "A",
  "token": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
  "lastIp": null,
  "lastUpdatedAt": null,
  "updateCount": 0,
  "enabled": true,
  "createdAt": "2026-04-27T12:00:00.000Z",
  "updatedAt": null
}
Request Body Create IPv4 DynDNS 
{
  "hostname": "home.example.com",
  "recordType": "A"
}