.SU

Name: .SU — TLD Knowledge Base
Creator: RU-Center

Soviet Union (historical)

RU-Center · ccTLD · Updated 2026-09-10

Open

Specifications

Zone: .su
Registration: Standard (manual processing)
Registration period: 1 year
Character length: 1-63
IDN: Yes
Nameservers: 2-7 nameservers
Transfer lock: Yes
Transfer time: Standard
Auth code format: N/A
Redemption period: None
Handle updates: Yes
Trustee service: Yes
WHOIS update: Standard
WHOIS server: whois.tcinet.ru
Connection: Direct
Data set: ccTLD
IDN character sets: BIG5, EUC_JP, EUC_KR, ISCII, KOI8_R, KOI8_U, SHIFT_JIS, TIS_620, ISO_8859_7, ISO_8859_1

Eligibility & Restrictions

Historical Soviet Union ccTLD, still active. Open to anyone worldwide. Operated alongside .RU.

Registration

1 year.

Transfer Procedure

Manual transfer process. No auth code used by this registry.

📘 ICANN Transfer Policy (IRTP) — See ICANN Transfer Policy for the full IRTP framework, auth code rules, 60-day lock periods, and TEAC.

Registrant Change

Standard process.

📘 ICANN OwnerChange (COR) — See ICANN OwnerChange for COR triggers, FOA/DA modes, 60-day lock, and opt-out.

Renewal & Deletion

Standard.

📘 ICANN ERRP — See ICANN ERRP for the standard gTLD expiry lifecycle (Auto-Renew Grace → RGP → Pending Delete → Released).

Restore / Redemption Grace Period

Standard.

📘 ICANN ERRP — See ICANN ERRP for RGP details and standard restore fees.

WHOIS / Privacy

Standard WHOIS.

📘 ICANN Registration Data Policy — See Registration Data Policy for RDP 2025, RDAP, redaction defaults, and privacy/proxy rules.

NIS2 Compliance

N/A. Not subject to EU NIS2.

📘 NIS2 Compliance — See NIS2 Compliance for Article 28 requirements, registry implementation status, and operational impact.

Data controllers

Russian Institute for Development of Public Networks<br>(ROSNIIROS) (org) 1, Kurchatov Sq., Moscow 123182, Russian Federation (the)
Russian Institute for Development of Public Networks (ROSNIIROS) — ROSNIIROS (admin) 1, Kurchatov Sq., Moscow 123182, Russian Federation (the)

Error codes

EF01017
EF03018
EF03017
EF01075
EF03011
EF03058
EF01055
EF03010
EF01074
EF02080
EF0103118
EF03009
EF03008
EF00512
EF01008
EF01009
EF03005
EF01002
EF03007
EF03006
EF02077
EF02076
EF01022
EF03040
EF02074

Required fields

techc/email
ownerc/email
adminc/email

Restrictions

Domains can be registered without restrictions.
Restore is only possible after domain has expired, not after the explicit deletion of the domain.
TLD will expire.

Root nameservers

F.DNS.RIPN.NET
A.DNS.RIPN.NET
D.DNS.RIPN.NET
B.DNS.RIPN.NET
E.DNS.RIPN.NET

Tasks (API)

update · available · chargeable · manual
transfer · available · chargeable · manual
preack · available · manual
delete · available · manual
create · available · chargeable · automatic

API

Domain Create

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

{
  "name": "example.su",
  "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.su",
  "auth": "(AUTH_CODE)"
}

Create AuthInfo1

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

Standard EPP auth code.

Domain Restore

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