---
title: ".CO.UK — TLD Knowledge Base"
url: "https://help.internetx.com/en/tld/co-uk/"
data: "https://help.internetx.com/tld-data/co-uk.json"
lang: "en"
tld: ".CO.UK"
registry: "Nominet"
country: "United Kingdom"
updated: "2026-09-10"
---

# .CO.UK
## Specifications

| | |
|---|---|
| Zone | co.uk |
| reg time | Real-time |
| Period | 1-10 years |
| char length | 1-63 |
| Nameservers | 2-7 nameservers |
| transfer time | Immediate |
| authcode length | N/A |
| Redemption | 60 days |
| whois update | Real-time |
| whois server | whois.nic.uk |
| Connection | Direct |
| data set | ccTLD |

## Eligibility & Restrictions

Open to anyone worldwide. No residency requirement. Legal type of registrant contact required (pre-configuration mandatory). Businesses cannot use WHOIS opt-out; individuals can opt out at registration.

## Registration

1-10 years.

## Transfer Procedure

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

> Pushing TAG is irreversible. Verify gaining registrar TAG before pushing. Cannot be cancelled once pushed.

> 📘 [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

Registrant change (name/organisation) must be done at Nominet Online Services portal directly. Registrar systems do not automatically sync all registrant changes. .UK WHOIS info must match associated .CO.UK/.ORG.UK/.ME.UK information.

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

## Renewal & Deletion

Standard renewal. Domain suspended 60 days after expiry. Nominet sends final cancellation notice 53 days into suspension. After 60-day suspension: domain deleted and available for registration.

> 📘 [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

Restore possible during 60-day suspension period after expiry.

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

## WHOIS / Privacy

Minimal data public by default. Individuals: can opt out. Companies: cannot opt out. WHOIS transitioning to RDAP (port 43 being phased out from Jan 2025).

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

## NIS2 Compliance

UK is not subject to EU NIS2. Nominet operates under UK regulations.

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

## Known Error Codes & Notes

- code: Irreversible TAG push, desc: TAG change is irreversible. Cannot be cancelled once pushed. Must contact new registrar or Nominet.
- code: Data quality lock, desc: Applied after 29 days if contact not validated. Domain suspended and stops resolving.
- code: Registrant min chars, desc: Registrant name/organization: minimum 4 characters with at least 3 letters. Street must contain non-numerical characters.
- code: .UK WHOIS match, desc: .UK WHOIS must match parent .CO.UK/.ORG.UK data.

## Further information

- label: Nominet, url: https://nominet.uk

## Tasks (API)

- label: renew, available: true, chargeable: true, authinfo: null, requiredAuthinfo: null, min: [object Object], max: [object Object], processing: AUTOMATED
- label: transit, 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: delete, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: ownerchange, available: true, chargeable: true, authinfo: null, requiredAuthinfo: false, min: null, max: null, processing: SEMIAUTOMATED
- label: restoreNE, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: update, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: transfer, available: true, chargeable: true, authinfo: null, requiredAuthinfo: false, min: [object Object], max: [object Object], processing: AUTOMATED
- label: restoreARGP, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED
- label: preack, available: true, chargeable: false, authinfo: null, requiredAuthinfo: null, min: null, max: null, processing: AUTOMATED

## Data controllers

- name: , type: org, organisation: Nominet UK, address: Minerva House,Edmund Halley Road,Oxford Science Park,Oxford OX4 4DQ,United Kingdom of Great Britain and Northern Ireland (the)
- name: TLD Registry Services Management, type: admin, organisation: Nominet UK, address: Minerva House,Edmund Halley Road,Oxford Science Park,Oxford OX4 4DQ,United Kingdom of Great Britain and Northern Ireland (the)

## Required fields

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

## Restrictions

- text: Restore is only possible after domain has expired, not after the explicit deletion of the domain., language: en
- text: Domains can be registered without restrictions., language: en
- text: Bitte klären Sie bei einem Inhaberwechsel die jeweiligen Anforderungen mit dem Support., language: de
- text: In case of an ownerchange please contact support for details., language: en
- text: Domains können ohne weitere Einschränkungen registriert werden., language: de
- text: Eine Aufhebung der Löschung (Restore) ist nur beim Ablaufen der Registrierungsperiode möglich. Bei explizit gelöschten Domains ist eine Aufhebung nicht möglich., language: de

## Error codes

- EF01017
- EF03019
- EF03008
- EF00512
- EF01008
- EF01009
- EF03005
- EF03018
- EF03007
- EF03017
- EF03006
- EF01075
- EF03011
- EF01055
- EF02111
- EF03041
- EF02094
- EF03010
- EF01095
- EF01074
- EF0103118
- EF02070

## Root nameservers

- DNS1.NIC.UK
- DNS2.NIC.UK
- DNS4.NIC.UK
- NSA.NIC.UK
- NSB.NIC.UK
- NSC.NIC.UK
- NSD.NIC.UK
- DNS3.NIC.UK

## API

## Domain Create

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

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

⚠ IPS TAG system for transfers, not auth codes.

## Domain Transfer

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

{
  "name": "example.co.uk",
  "\_note": "IPS TAG push via registrar. No auth code."
}

⚠ IPS TAG push. No auth code. Irreversible. Transfer does NOT extend period.

## Domain Restore

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

⚠ 60-day suspension period. Restore possible during suspension.

## TLD Extension Parameters

extensions.uk.registrantType

`string` — Legal type of registrant. Pre-configuration mandatory.