List of domain registrars · Integrations
Joker.com
Joker.com is a domain registrar run by CSL Computer Service Langenbach GmbH in Düsseldorf, Germany, accredited by ICANN since the late 1990s (IANA ID 113). It sells domains to individuals and resellers.
| WHOIS privacy | Available for a fee |
|---|---|
| Support | Email or tickets, Help center |
| Lemon Domains | Connects by API, so your AI can read and manage these domains |
| Website | joker.com |
Joker.com MCP
Lemon Domains is the unofficial Joker.com MCP server. Connect your Joker.com account by API once, and Claude, ChatGPT, Cursor or any MCP client can answer questions about your Joker.com 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 Joker.com domains expire in the next 60 days?”
- “Is auto-renew on for every domain at Joker.com?”
- “Did the nameservers change on any of my Joker.com domains this week?”
Connect Joker.com · How the domain MCP server works · Track Joker.com renewals
Lemon Domains is independent and not affiliated with Joker.com.
Joker.com API
| Status | Integrated |
|---|---|
| API key | How to get a Joker.com API key |
| Documentation | dmapi.joker.com |
About Joker.com
| Legal name | CSL Computer Service Langenbach GmbH |
|---|---|
| Headquarters | Düsseldorf, Germany |
| Ownership | Private |
| Type | Retail registrar |
| ICANN accreditation | IANA ID 113 |
| Site languages | German, English |
| RDAP server | https://rdap.joker.com/ |
Domain management features
- DNSSEC
- Two-factor sign-in
Listed where we confirmed Joker.com offers it. Some features cost extra or only cover certain extensions.
Services
| Service | Check it on lemon.domains |
|---|---|
| Domain registration | Run a domain report |
| DNS hosting | Look up DNS records |
| Email hosting | Check email records |
| Reseller program |
Joker.com support
| Channels | Email or tickets, Help center |
|---|---|
| Contact | Contact Joker.com |
Domain extensions Joker.com sells
Confirmed on its site: .ch, .de, .eu.
Transferring a domain away from Joker.com
In My Domains, choose Modify for the domain, turn off domain protection and request the AUTH-ID. Only the domain's owner can do this, not users with an Admin role.
Give the code to the new registrar to start the transfer. Most extensions can't move within 60 days of registration or a previous transfer. Joker.com's guide
Joker.com in Lemon Domains
Connect Joker.com with an API key and every Joker.com 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
- Joker.com API settings
- Lemon Domains IP addresses
- 2.31.94.66
- API reference
- Joker.com API docs
What you can do with Joker.com domains
In Lemon Domains
- Bring in your domains · Synced daily by API
- See expiry, auto-renew and lock status
On Joker.com'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 Joker.com to Lemon Domains
Three steps: create a read-only API key at Joker.com, add it to Lemon Domains, and your domains sync once a day from then on. Connect as many Joker.com accounts as you have.
Create a read-only API key at Joker.com
A read-only DMAPI API key. Joker.com lets each key carry its own access level, and a read-only key can list your domains but change nothing.
- 1Sign in to Joker.com and open the API key settings of your account.
- 2Create a new DMAPI key named “Lemon Domains” and choose read-only access.
- 3If you limit the key to certain IP addresses, allow the Lemon Domains IP address shown on the connect page.
- 4Copy the key.
Add it to Lemon Domains
- 1Sign in to Lemon Domains (it's free), open Connections and choose Joker.com.
- 2Give the connection a friendly name, like “Joker.com personal” or “Joker.com clients”. Connect each Joker.com 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
- Transfer lock
Lemon Domains only ever sends read requests to Joker.com: 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
- Joker.com 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 Joker.com 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 Joker.com portal, paste it into Lemon Domains, and you're done. Re-import any time to refresh. Paste or CSV import needs no Joker.com credentials at all.
- 1Open your Joker.com account at joker.com and go to the domain list.
- 2If the list paginates, switch to "show all" or the largest page size so every Joker.com domain is visible.
- 3Copy the visible list, or export to CSV if Joker.com 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 "Joker.com personal" or "Joker.com 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 Joker.com'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 Joker.com domains?
Yes. Connect your Joker.com 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 Joker.com dashboard or uploading a CSV export. Multiple Joker.com accounts are supported with friendly labels so sub-accounts stay distinct in the unified portfolio.
How do I get a Joker.com API key?
Sign in to Joker.com and open the API key settings of your account. Create a new DMAPI key named “Lemon Domains” and choose read-only access. If you limit the key to certain IP addresses, allow the Lemon Domains IP address shown on the connect page. Copy the key. A read-only DMAPI API key. Joker.com lets each key carry its own access level, and a read-only key can list your domains but change nothing.
Do I need to share my Joker.com password?
No. Connecting by API uses an API key you create at Joker.com, not your password. A read-only DMAPI API key. Joker.com lets each key carry its own access level, and a read-only key can list your domains but change nothing. 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 Joker.com accounts?
Yes. Add one connection per Joker.com 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 Joker.com domains?
No. Renewal still happens at Joker.com. Lemon Domains tracks expiry dates and auto-renew status so you know exactly when to act, but the renewal button stays at Joker.com.
Can AI assistants query my Joker.com domains?
Yes. The Lemon Domains MCP server lets ChatGPT, Claude, Cursor and any MCP client query your full portfolio, including Joker.com domains, in plain English. Choose read-only or read-and-write access for each token.
Is Joker.com ICANN-accredited?
Yes. Joker.com is on the ICANN list of accredited registrars, so it can register generic extensions such as .com directly with the registries.
What is Joker.com's IANA ID?
113. The IANA registrar ID appears in the registrar field of a domain's public record, so it shows which registrar a domain is with.
What other names does Joker.com operate under?
Its accreditations are also held as CSL Computer Service Langenbach GmbH d/b/a joker.com. Domains registered through any of them can show those names as the registrar.
Is there an MCP server for Joker.com domains?
Yes. Lemon Domains connects to Joker.com by API and serves your Joker.com domains through its remote MCP server, so Claude, ChatGPT, Cursor and any MCP client can answer questions about them. It is independent of Joker.com and not affiliated with it, so the same connection also covers your domains at every other registrar.
Does Joker.com have an API?
Yes. Lemon Domains connects to Joker.com 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 Joker.com sell?
Its price list includes .ch, .de and .eu.
Does Joker.com include WHOIS privacy?
Joker.com offers WHOIS privacy as a paid add-on, for the extensions whose registry allows it.
How do I contact Joker.com support?
Joker.com offers support by email or tickets and help center. Its contact page is https://joker.com/faq/.
What does Joker.com offer besides domain names?
DNS hosting, Email hosting and Reseller program.
How do I transfer a domain away from Joker.com?
In My Domains, choose Modify for the domain, turn off domain protection and request the AUTH-ID. Only the domain's owner can do this, not users with an Admin role. Then give the code to the new registrar to start the transfer.