Data as of Nov 13, 2026
155.231.209.0/24
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by NHS England
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 155.231.0.0/16 | 65,536 | UK-NHS-19911204 | NHS England (ORG-NHS1-RIPE) · GB | ALLOCATED PA | Oct 28, 2003 | abuse-ripe@ |
| └ 155.231.209.0/24 | 256 | UKNHS-1218a | NHSMail service | ASSIGNED PA | Jul 19, 2024 | abuse-ripe@ via UK-NHS-19911204 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Registry
Holder
- Organization
- NHS England
- Handle
- ORG-NHS1-RIPE
- Range
- 155.
231. 0. 0/ 16 - Registration type
- ALLOCATED PA
- Record created
- Oct 28, 2003
Origin network
AS8075
US
- Name
- Microsoft Corporation
- Type
- Hosting
- Registered
- Mar 31, 1997
- Domain
- microsoft.com
- Website
- www.microsoft.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2024
- Current origin since
- Sep 2024 · 2.2 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 155.
231. 209. 0/ 24 - Netname
- UKNHS-1218a
- Registrant
- NHSMail service
- Registrant country
- GB
- Organization
- NHSMail service
- Org country
- GB
- Type
- ASSIGNED PA
- Created
- Jul 19, 2024
- Updated
- Jul 24, 2024
- Maintainer
- UKNHS-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Dec 4, 1991
- Status
- assigned
Report abuse
Abuse contact
- abuse-ripe@
hscic. gov. uk - Name
- Abuse Role
- Handle
- AR12895-RIPE