---
title: ".SI — TLD Knowledge Base"
url: "https://help.internetx.com/en/tld/si/"
data: "https://help.internetx.com/tld-data/si.json"
lang: "en"
tld: ".SI"
registry: "ARNES"
country: "Slovenia"
updated: "2026-09-10"
---

# .SI
## Specifications

| | |
|---|---|
| Zone | .si |
| reg time | Real-time |
| Period | 1 year |
| char length | 1-63 |
| Nameservers | 2-7 nameservers |
| transfer time | Standard |
| authcode length | Standard EPP |
| Redemption | 10 days (no RGP) |
| whois update | Standard |
| whois server | whois.register.si |
| Connection | Direct |
| data set | ccTLD |

## Eligibility & Restrictions

Open to anyone worldwide. No residency requirement.

## Registration

1 year.

## Transfer Procedure

Standard auth code transfer. All modifications require confirmation from registrant (email confirmation from registry or fax).

> ALL modifications (DNS, contact changes, transfers) require registrant email confirmation from registry or fax confirmation.

> 📘 [ICANN Transfer Policy (IRTP)](/en/icann/icann-transfer/) — See ICANN Transfer Policy for the full IRTP framework, auth code rules, 60-day lock periods, and TEAC.

## Registrant Change

All modifications require registrant confirmation via email from registry or fax.

> 📘 [ICANN OwnerChange (COR)](/en/icann/icann-ownerchange/) — See ICANN OwnerChange for COR triggers, FOA/DA modes, 60-day lock, and opt-out.

## Renewal & Deletion

Active for 10 days past expiry; after 10 days, deleted and made available immediately.

> Short post-expiry window: only 10 days. No RGP. Domain released immediately after 10-day window.

> 📘 [ICANN ERRP](/en/icann/icann-errp/) — See ICANN ERRP for the standard gTLD expiry lifecycle (Auto-Renew Grace → RGP → Pending Delete → Released).

## Restore / Redemption Grace Period

No RGP documented. Domain released immediately after 10-day post-expiry window.

> 📘 [ICANN ERRP](/en/icann/icann-errp/) — See ICANN ERRP for RGP details and standard restore fees.

## WHOIS / Privacy

Standard WHOIS.

> 📘 [ICANN Registration Data Policy](/en/icann/icann-rdp/) — See Registration Data Policy for RDP 2025, RDAP, redaction defaults, and privacy/proxy rules.

## NIS2 Compliance

Slovenia NIS2 transposition applies.

> 📘 [NIS2 Compliance](/en/icann/ts-nis2/) — See NIS2 Compliance for Article 28 requirements, registry implementation status, and operational impact.

## Known Error Codes & Notes

- code: 10-day window, desc: Only 10 days past expiry. No RGP. Domain available immediately after.
- code: All mods need confirmation, desc: Every modification (DNS, contacts, transfers) requires registrant email/fax confirmation.

## Further information

- label: ARNES, url: https://arnes.si

## Tasks (API)

- label: update, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: create, available: true, chargeable: true, authinfo: null, requiredAuthinfo: false, min: [object Object], max: [object Object], processing: AUTOMATED
- label: preack, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: transfer, available: true, chargeable: true, authinfo: ALL, requiredAuthinfo: true, min: [object Object], max: [object Object], processing: AUTOMATED
- label: delete, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: renew, available: true, chargeable: true, authinfo: null, requiredAuthinfo: null, min: [object Object], max: [object Object], processing: AUTOMATED

## Data controllers

- name: , type: org, organisation: Academic and Research Network of Slovenia (ARNES), address: Tehnološki park 18,Ljubljana 1000,Slovenia
- name: Barbara Povše, type: admin, organisation: Academic and Research Network of Slovenia (ARNES), address: Tehnološki park 18,Ljubljana 1000,Slovenia
- name: , type: org, organisation: Academic and Research Network of Slovenia (ARNES), address: Tehnološki park 18,Ljubljana 1000,Slovenia
- name: Barbara Povše, type: admin, organisation: Academic and Research Network of Slovenia (ARNES), address: Tehnološki park 18,Ljubljana 1000,Slovenia

## Required fields

- techc/email
- ownerc/email
- adminc/email

## Restrictions

- text: Domains können ohne weitere Einschränkungen registriert werden., language: de
- text: Nameserver must be set up in advance and provide an authoritative response., language: en
- text: Domains can be registered without restrictions., language: en
- text: Nameserver müssen vorher eingerichtet sein und autoritativ antworten., language: de

## Error codes

- EF00803
- EF01017
- EF03008
- EF00512
- EF01008
- EF01009
- EF03005
- EF01002
- EF03007
- EF03006
- EF01075
- EF03011
- EF01055
- EF01088
- EF03010
- EF01074
- EF0103118

## Root nameservers

- B.DNS.SI
- L.DNS.SI
- F.DNS.SI
- H.DNS.SI
- I.DNS.SI
- K.DNS.SI

## API

## Domain Create

POST https://api.autodns.com/v1/domain

{
  "name": "example.si",
  "ownerc": {
    "id": 23142212
  },
  "adminc": {
    "id": 23142212
  },
  "techc": {
    "id": 23142212
  },
  "nameServers": \[
    {
      "name": "ns1.example.com"
    },
    {
      "name": "ns2.example.com"
    }
  \],
  "confirmOrder": false
}

## Domain Transfer

POST https://api.autodns.com/v1/domain/\_transfer

{
  "name": "example.si",
  "auth": "(AUTH\_CODE)"
}

## Create AuthInfo1

POST https://api.autodns.com/v1/domain/example.si/\_authinfo1

Standard EPP auth code.

## Domain Restore

POST https://api.autodns.com/v1/domain/example.si/\_restore