Arsys
Arsys is a web host and domain registrar based in Spain, founded in 1996. It is ICANN-accredited, with IANA ID 379.
| Website | arsys.es |
|---|
API access
| Status | Blocked |
|---|---|
| API | API only within the Arsys domain reseller program. |
| Notes | Also trades as Nicline.com. |
About Arsys
| Headquarters | Spain |
|---|---|
| Founded | 1996 |
| Part of | IONOS (United Internet) |
| Type | Web host that registers domains |
| ICANN accreditation | IANA ID 379 |
| Site languages | Catalan, English, Spanish |
| RDAP server | https://rdap.domainconnection.info/ |
Domain extensions Arsys sells
Confirmed on its site: .cat, .es, .eu.
Arsys in Lemon Domains
Bring Arsys domains into Lemon Domains by pasting the domain list or uploading a CSV export, next to the domains from every other registrar you use. Lemon Domains tracks expiry dates and lets your AI assistant answer questions about them through MCP.
Related registrars
| Blocked | |
| Integrated | |
| Integrated | |
| Integrated | |
| Blocked | |
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Sources: the ICANN list of accredited registrars and the IANA registrar ID registry (refreshed 2026-10-24), and Arsys's own site and documentation (reviewed 2026-10-24). This page is also available as Markdown and JSON. Something out of date? Tell us.
Frequently asked questions
Is Arsys ICANN-accredited?
Yes. Arsys is on the ICANN list of accredited registrars, so it can register generic extensions such as .com directly with the registries.
What is Arsys's IANA ID?
379. 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 Arsys operate under?
Its accreditations are also held as Arsys Internet, S.L. dba NICLINE.COM. Domains registered through any of them can show those names as the registrar.
Does Arsys have an API?
Not one that account holders can use. API only within the Arsys domain reseller program. Arsys domains come into Lemon Domains by paste or CSV import instead.