List of domain registrars · Integrations
OpusDNS
OpusDNS is a wholesale domain platform for registrars, hosting companies and resellers, built from scratch in 2025 around an API covering registration, transfers, renewals and DNS hosting. Its co-founders are Robbie Birkner, who co-founded the reseller platform Hexonet, and Hakan Ali, who co-founded InterNetX.
| Extensions sold | 104 extensions |
|---|---|
| Support | Help center |
| Lemon Domains | Connects by API, so your AI can read and manage these domains |
| Website | opusdns.com |
OpusDNS MCP
Lemon Domains is the unofficial OpusDNS MCP server. Connect your OpusDNS account by API once, and Claude, ChatGPT, Cursor or any MCP client can answer questions about your OpusDNS domains next to the domains you hold at every other registrar. Connections start read only, so your AI changes only what you allow.
- “Which of my OpusDNS domains expire in the next 60 days?”
- “Is auto-renew on for every domain at OpusDNS?”
- “Did the nameservers change on any of my OpusDNS domains this week?”
Connect OpusDNS · How the domain MCP server works · Track OpusDNS renewals
Lemon Domains is independent and not affiliated with OpusDNS.
OpusDNS API
| Status | Integrated |
|---|---|
| API key | How to get a OpusDNS API key |
| Documentation | developers.opusdns.com |
| Notes | Registrar platform launched in October 2025 with a REST API and sandbox. |
About OpusDNS
| Headquarters | Germany |
|---|---|
| Founded | 2025 |
| Founders | Robbie Birkner and Hakan Ali |
| Ownership | Private |
| Type | Retail registrar |
| ICANN accreditation | IANA ID 4340 |
| Site languages | German, English |
| RDAP server | https://rdap.opusdns.com/ |
OpusDNS history
| 2025 | OpusDNS launches its wholesale platform. |
|---|
Domain management features
- Free DNS hosting
- URL forwarding
Listed where we confirmed OpusDNS offers it. Some features cost extra or only cover certain extensions.
Payments and programs
| Reseller program | opusdns.com |
|---|
Services
| Service | Check it on lemon.domains |
|---|---|
| Domain registration | Run a domain report |
| DNS hosting | Look up DNS records |
| Reseller program | |
| Prices | OpusDNS's price list |
OpusDNS support
| Channels | Help center |
|---|---|
| Contact | Contact OpusDNS |
Domain extensions OpusDNS sells
OpusDNS's price list has 104 extensions: 101 generic and 3 country-code. Read from opusdns.com in October 2026. Each one links to its registry, rules and the other registrars that sell it.
Generic 101
- .academy
- .actor
- .agency
- .archi
- .army
- .associates
- .band
- .bargains
- .bet
- .bike
- .bio
- .black
- .blue
- .boutique
- .broker
- .cafe
- .capital
- .care
- .careers
- .cash
- .casino
- .center
- .charity
- .chat
- .cheap
- .church
- .city
- .claims
- .clinic
- .coach
- .codes
- .coffee
- .computer
- .consulting
- .cool
- .coupons
- .credit
- .dance
- .dating
- .delivery
- .democrat
- .digital
- .direct
- .directory
- .doctor
- .dog
- .energy
- .engineering
- .enterprises
- .estate
- .events
- .exchange
- .expert
- .express
- .farm
- .finance
- .financial
- .fitness
- .forex
- .forsale
- .foundation
- .fund
- .furniture
- .futbol
- .gives
- .giving
- .global
- .gold
- .golf
- .green
- .guru
- .haus
- .house
- .info
- .institute
- .international
- .investments
- .irish
- .kim
- .kitchen
- .land
- .lgbt
- .life
- .llc
- .loans
- .lotto
- .ltd
- .marketing
- .markets
- .mba
- .media
- .mobi
- .money
- .network
- .news
- .ninja
- .pro
- .recipes
- .shop
- .watch
OpusDNS in Lemon Domains
Connect OpusDNS with an API key and every OpusDNS domain joins your other registrars in one list, syncs once a day, and is there for your AI through MCP, the API and the CLI.
- How it connects
- Daily sync by API key
- Get an API key
- OpusDNS API settings
- Lemon Domains IP addresses
- 2.31.94.66
- API reference
- OpusDNS API docs
What you can do with OpusDNS domains
In Lemon Domains
- Bring in your domains · Synced daily by API
- See expiry, auto-renew and lock status
On OpusDNS's site
- Edit DNS records
- Change nameservers
- Turn the transfer lock on or off
- Turn auto-renew on or off
- Renew a domain
- Buy a new domain
- Get a transfer code
Connect OpusDNS to Lemon Domains
Three steps: create a read-only API key at OpusDNS, add it to Lemon Domains, and your domains sync once a day from then on. Connect as many OpusDNS accounts as you have.
Create a read-only API key at OpusDNS
An OpusDNS API key with the Viewer role. It can read your domains and change nothing; Lemon Domains only ever lists them.
- 1Sign in to the OpusDNS dashboard and open Developer → API Credentials.
- 2Create a new API key named “Lemon Domains” and give it the Viewer role.
- 3Copy the key (it starts with opk_). It is only shown once.
- 4If you limit the key to certain IP addresses, allow the Lemon Domains IP address shown on the connect page.
Add it to Lemon Domains
- 1Sign in to Lemon Domains (it's free), open Connections and choose OpusDNS.
- 2Give the connection a friendly name, like “OpusDNS personal” or “OpusDNS clients”. Connect each OpusDNS account separately.
- 3Paste your api key.
- 4Click Test connection. Lemon Domains checks the API key and shows how many domains it can see, without saving anything.
- 5Tick the checkbox to confirm you understand the risks, pick the project new domains go into, and click Connect and import. Your domains appear straight away and sync once a day after that.
What Lemon Domains reads
- Domain names (including internationalised names)
- Status, such as active, expired or pending transfer
- Expiry and registration dates
- Whether auto-renew is on
- Nameservers
- Transfer lock
Lemon Domains only ever sends read requests to OpusDNS: each integration has a fixed list of read-only calls it may make, so it never renews, transfers or changes a domain. Your API key is encrypted at rest and never shown again.
If something goes wrong
- OpusDNS rejects the API key
- Copy it again with no spaces at either end. Some registrars only show the secret once, so create a new key if you didn't save it.
- The key has an IP restriction
- Lemon Domains connects from 2.31.94.66. Add it to the API key's allowed IPs, or remove the restriction.
- Some domains are missing
- Make sure the API key belongs to the OpusDNS account (or sub-account) that holds those domains. Connect each account separately.
Rather not use an API key? Import by paste or CSV
Copy your list from the OpusDNS portal, paste it into Lemon Domains, and you're done. Re-import any time to refresh. Paste or CSV import needs no OpusDNS credentials at all.
- 1Open your OpusDNS account at opusdns.com and go to the domain list.
- 2If the list paginates, switch to "show all" or the largest page size so every OpusDNS domain is visible.
- 3Copy the visible list, or export to CSV if OpusDNS offers it from the account area.
- 4In Lemon Domains, click Import, paste the list or upload the CSV, and map the columns. Lemon Domains previews everything before it commits.
- 5Give the registrar account a friendly label (for example "OpusDNS personal" or "OpusDNS client work") so sub-accounts stay distinct.
Other registrars in Germany
| Integrated | |
| Integrated | |
| Integrated | |
| Blocked | |
| Blocked | |
| Blocked |
Sources: the ICANN list of accredited registrars and the IANA registrar ID registry (refreshed 2026-10-24), and OpusDNS's own site and documentation (reviewed October 2026). This page is also available as Markdown and JSON. Something out of date? Tell us.
Frequently asked questions
Does Lemon Domains support OpusDNS domains?
Yes. Connect your OpusDNS account with an API key and Lemon Domains syncs your domains automatically once a day. You can also import by pasting your domain list from the OpusDNS dashboard or uploading a CSV export. Multiple OpusDNS accounts are supported with friendly labels so sub-accounts stay distinct in the unified portfolio.
How do I get a OpusDNS API key?
Sign in to the OpusDNS dashboard and open Developer → API Credentials. Create a new API key named “Lemon Domains” and give it the Viewer role. Copy the key (it starts with opk_). It is only shown once. If you limit the key to certain IP addresses, allow the Lemon Domains IP address shown on the connect page. An OpusDNS API key with the Viewer role. It can read your domains and change nothing; Lemon Domains only ever lists them.
Do I need to share my OpusDNS password?
No. Connecting by API uses an API key you create at OpusDNS, not your password. An OpusDNS API key with the Viewer role. It can read your domains and change nothing; Lemon Domains only ever lists them. Keys are encrypted at rest. Lemon Domains only ever sends read requests. Or skip the API and paste your list or upload a CSV.
Can I track multiple OpusDNS accounts?
Yes. Add one connection per OpusDNS account, each with its own friendly name. Personal and business logins, sub-accounts, and client accounts all sit side by side in one dashboard.
Does Lemon Domains renew my OpusDNS domains?
No. Renewal still happens at OpusDNS. Lemon Domains tracks expiry dates and auto-renew status so you know exactly when to act, but the renewal button stays at OpusDNS.
Can AI assistants query my OpusDNS domains?
Yes. The Lemon Domains MCP server lets ChatGPT, Claude, Cursor and any MCP client query your full portfolio, including OpusDNS domains, in plain English. Choose read-only or read-and-write access for each token.
Is OpusDNS ICANN-accredited?
Yes. OpusDNS is on the ICANN list of accredited registrars, so it can register generic extensions such as .com directly with the registries.
What is OpusDNS's IANA ID?
4340. The IANA registrar ID appears in the registrar field of a domain's public record, so it shows which registrar a domain is with.
Is there an MCP server for OpusDNS domains?
Yes. Lemon Domains connects to OpusDNS by API and serves your OpusDNS domains through its remote MCP server, so Claude, ChatGPT, Cursor and any MCP client can answer questions about them. It is independent of OpusDNS and not affiliated with it, so the same connection also covers your domains at every other registrar.
Does OpusDNS have an API?
Yes. Lemon Domains connects to OpusDNS by API and syncs your domain list every day, with expiry dates and renewal settings. Your AI assistant can then answer questions about those domains through the Lemon Domains MCP server.
What domain extensions does OpusDNS sell?
OpusDNS's price list has 104 extensions: 101 generic, 3 country-code and 0 second-level, as of October 2026. They include .io. The full list is on this page.
How do I contact OpusDNS support?
OpusDNS offers support by help center. Its contact page is https://developers.opusdns.com/.
What does OpusDNS offer besides domain names?
DNS hosting and Reseller program.