HSCN IP Addresses
HSCN Address Space
HSCN uses the 10.128.0.0/9 CIDR block (i.e. 10.128.0.0 – 10.255.255.255). All NHS systems communicating over HSCN use IPs within this range.
RaaS HSCN Allocations
| Customer | Account | VPC CIDR | Notes |
|---|---|---|---|
| raas-customer-uk (ref) | 943397710386 |
Allocated by Redcentric | Internal reference deployment |
| raas-customer-westherts-hscn | 851725456662 |
Allocated by Redcentric | WestHerts HSCN account |
Note
Specific IP allocations are managed by Redcentric and recorded in the HSCN connectivity Confluence page. Contact the platform team or Redcentric for the current allocation table.
Management VPC HSCN IPs
The RaaS management VPC (640815619001) has HSCN connectivity via Transit Gateway. Its HSCN-facing IPs are managed by Redcentric — see Redcentric for contact details.
Useful HSCN Ranges
| Range | Owner |
|---|---|
10.128.0.0/9 |
HSCN address space (NHS Digital) |
10.134.0.0/16 |
NHS England central services |
For current routing tables and firewall rules, see Firewall Rules.