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HSCN IP address management

The Health and Social Care Network (HSCN) programme will provide new and significantly different network services to the N3 network it succeeds.

HSCN will create the effect of a single network across health and social care providers and their partners. It will support more integrated care and is available to all health and social care organisations in England. 

HSCN Internet Protocol address management process

As part of your migration to HSCN, you may want or need to migrate your existing IP addresses. This will be managed by the Internet Protocol Address Management (IPAM) team.

NHS Digital will manage and administer the HSCN IP addressing policy and the IPAM function. The IPAM team will manage the allocation and return of subnets from the HSCN IP address space.

We will introduce an online tool to make IP address management easier -  this will be available from February 2018.

For early adopters who need to make amendments prior to the launch of the online tool we have created an interim IPAM process:

  1. Complete the Early Adopter IPAM Request Form.
  2. The IPAM team will acknowledge your submission within five working days.
  3. Your requested IP addresses and migration date will be reviewed by the IPAM team, and every effort will be made to meet your requirements.
  4. The IPAM team will send an email confirmation within ten working days from the date of acknowledgement, or contact you if further details are required.

Requirement for additional IP addresses

If you require an additional allocation of IP addresses, then please complete the icon HSCN Private IP Address Allocation Request form [107.95KB] and return by email to

This form is only for organisations with sites already connected to HSCN that have a requirement for an additional allocation of IP addresses from the NHS private IP address space; - 

This form should not be used to request NHS private IP address allocations for sites connected to the Transition Network (legacy N3).

Further information and enquiries

HSCN IP addressing policy 

Further information is available from the HSCN IP addressing policy. The policy applies to all direct connections to the HSCN from organisations of all types, including NHS, social care, and third-party organisations, such as application providers.

icon HSCN IP addressing policy v1.1 [178.02KB]

HSCN IP addressing good practice guidelines 

The HSCN IP addressing good practice guidelines document provides advice and guidance for IP addressing and related key protocols for organisations connected to HSCN. 

icon HSCN IP Addressing Good Practice Guide [633.07KB]

Transition Network IP addressing policy 

The Transition Network IP addressing policy details the current NHS Digital IP addressing for Transition Network (legacy N3) users. 

icon Transition Network IP addressing policy [172.59KB]

For enquiries please email the HSCN IPAM team:

Further guidance will also be made available via supplier and consumer webinars. You can find details of upcoming webinars on the HSCN news and events page or email to request presentations and content from previous webinars.

HSCN Internet Protocol (IP) addressing policy

This HSCN Internet Protocol (IP) addressing policy defines the legitimate addressing schemes and the working principles for their use. This policy statements set out in this document are necessary to underpin the transition to the HSCN in support of the business needs of health and social care.

HSCN IP addressing good practice guidelines

This document provides advice and guidelines for IP addressing and related key protocols for organisations connected to the HSCN. Published 24 May 2017.

Transition Network IP addressing policy

The NHS Transition Network addressing policy mandates the use of the private IP address range from to within the core of the Transition Network (TN) and for legacy continuing orders.

HSCN IP addressing guidance for transition

This transition guidance document is designed to provide advice relating specifically to IP addressing for organisations that are migrating from the Transition Network (TN) to the HSCN.

Have a question? Call us on 0300 303 5678 or contact

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