The Checkdomain portfolio
dashboard you wish Checkdomain had.
A real portfolio dashboard for Checkdomain. Track expiry, group by project, sync daily by API or import by paste or CSV, and AI access through MCP.
No credit card. Free for personal portfolios.
German registrar and web host offering domains, DNS and hosting packages for individuals and small businesses. Lemon Domains puts every Checkdomain domain into one searchable, sortable list, groups them by project, and tracks expiry properly. Add multiple Checkdomain accounts with their own labels. Free for personal portfolios.
- Website
- checkdomain.de
- How it connects
- Daily sync by API key
- Get an API key
- Checkdomain API settings
- Lemon Domains IP addresses
- 2.31.94.66
- API reference
- Checkdomain API docs
Connect Checkdomain to Lemon Domains
Three steps: create a read-only API key at Checkdomain, add it to Lemon Domains, and your domains sync once a day from then on. Connect as many Checkdomain accounts as you have.
Create a read-only API key at Checkdomain
Create a separate API token just for Lemon Domains, limited to reading domains where Checkdomain offers that, so you can revoke it on its own.
- 1Sign in to Checkdomain and open your account data, then the API section.
- 2Create an API token for Lemon Domains. If you can choose permissions, allow reading domains only.
- 3Copy the token and paste it in Lemon Domains.
Add it to Lemon Domains
- 1Sign in to Lemon Domains (it's free), open Connections and choose Checkdomain.
- 2Give the connection a friendly name, like “Checkdomain personal” or “Checkdomain clients”. Connect each Checkdomain account separately.
- 3Paste your api token.
- 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
Lemon Domains only ever sends read requests to Checkdomain: 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
- Checkdomain 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 Checkdomain 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 Checkdomain portal, paste it into Lemon Domains, and you're done. Re-import any time to refresh.
- 1Open your Checkdomain account at checkdomain.de and go to the domain list.
- 2If the list paginates, switch to "show all" or the largest page size so every Checkdomain domain is visible.
- 3Copy the visible list, or export to CSV if Checkdomain 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 "Checkdomain personal" or "Checkdomain client work") so sub-accounts stay distinct.
- Paste or CSV import needs no Checkdomain credentials at all.
- Checkdomain sub-accounts are supported. Add one Lemon Domains entry per Checkdomain account with its own label.
How Checkdomain fits into Lemon Domains
Pulled into one dashboard
Every Checkdomain domain you own sits next to your domains from every other registrar. Same list, same search.
Expiry tracking, finally
Lemon Domains shows live expiry countdowns and filters by expiry window (under 30 days, 31-90 days, later) for every Checkdomain domain so you stop missing renewals.
Daily sync by API
Connect Checkdomain with an API key and Lemon Domains syncs your domains once a day. Hit Sync now whenever you want a fresh copy.
Why Lemon Domains beats the Checkdomain dashboard
- Every Checkdomain domain in one sortable list, no pagination
- Live expiry countdowns and 30 and 90 day expiry windows, not just a date column
- Project folders for client work, brands, and experiments
- Multiple Checkdomain accounts with friendly labels, side by side
- Daily sync by API, plus a Sync now button
- Unified view with GoDaddy, Porkbun, Namecheap, and every other registrar
- MCP server access so your AI assistant can answer Checkdomain portfolio questions
Ask your AI assistant about your Checkdomain domains
Connect the Lemon Domains MCP server to Claude Code, Cursor, or any MCP client that can send a Bearer header. "What Checkdomain domains do I have expiring this month?" becomes a one-line question.
Checkdomain + Lemon Domains FAQ
Does Lemon Domains support Checkdomain domains?
Yes. Connect your Checkdomain 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 Checkdomain dashboard or uploading a CSV export. Multiple Checkdomain accounts are supported with friendly labels so sub-accounts stay distinct in the unified portfolio.
How is this different from the Checkdomain dashboard?
Checkdomain is an established registrar, but its built-in dashboard is account-scoped and not designed for portfolio thinking. Lemon Domains puts every Checkdomain domain into one searchable, sortable list, adds live expiry countdowns, expiry window filters (under 30 days, 31-90 days, later), and project folders, and unifies Checkdomain with every other registrar you use.
Do I need to share my Checkdomain password?
No. Connecting by API uses an API key you create at Checkdomain, not your password. Create a separate API token just for Lemon Domains, limited to reading domains where Checkdomain offers that, so you can revoke it on its own. Keys are encrypted at rest, and Lemon Domains only ever sends read requests. Or skip the API and paste your list or upload a CSV.
Can I track multiple Checkdomain accounts?
Yes. Add one connection per Checkdomain 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 Checkdomain domains?
No. Renewal still happens at Checkdomain. Lemon Domains tracks expiry dates and auto-renew status so you know exactly when to act, but the renewal button stays at Checkdomain.
Can AI assistants query my Checkdomain domains?
Yes. The Lemon Domains MCP server lets Claude Code, Cursor, Windsurf, and any MCP client that can send a Bearer header query your full portfolio, including Checkdomain domains, in plain English. Choose read-only or read-and-write access for each token.
Stop juggling Checkdomain tabs.
Connect by API or import in under a minute. Free, forever for personal use.