UltraDNS
UltraDNS (Neustar / Vercara) uses HTTP Basic auth with a dedicated user account. Treat this as a machine account — do not reuse operator credentials.
Prerequisites
- An UltraDNS account with the target zone provisioned.
- Permission to create sub-accounts / API-only users.
Create an API user
- UltraDNS portal → User management → Add user.
- Username + password. Disable interactive login; this account is for the API only.
- Grant Zone administrator on just the target zone. Avoid account-wide roles.
Add the credential
- Settings → DNS Credentials → New → UltraDNS.
- Username + password: paste.
- Optional: Endpoint — leave blank for the public UltraDNS REST endpoint, or set to your dedicated customer endpoint if Vercara provisioned one for you.
- Test connectivity → Save.
Config fields
| Field | Required | Purpose |
|---|---|---|
username | yes | API user. |
password | yes | API password. |
endpoint | no | Override the public REST endpoint. |
Propagation
UltraDNS is fast — typically under 10 seconds. Default propagation settings work.
Troubleshooting
"401 Unauthorized"
Username / password wrong, account locked after failed-login threshold, or the account is missing Zone administrator on the target zone.
Endpoint override doesn't resolve
Use the full URL including scheme: https://customer.ultradns.net/v1. Leaving it blank usually is the right choice unless Vercara explicitly gave you a dedicated host.