Data as of Nov 5, 2026
212.46.57.0/25
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by CST Group Limited
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 212.46.57.0/24 | 256 | UK-CSTNET-20220228 | CST Group Limited (ORG-CGL22-RIPE) · GB | ALLOCATED PA | Feb 28, 2022 | abuse@ |
| └ 212.46.57.0/25 | 128 | CSTNET-UK-1 | unknown | ASSIGNED PA | Feb 28, 2022 | abuse@ via UK-CSTNET-20220228 |
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
Announced by
Covering announcement 212.46.57.0/24
- Prefix
- 212.46.57.0/24
- Announced by
- AS8075 Microsoft Corporation
- Type
- Hosting
- RPKI
- RPKI valid
- Netname
- UK-CSTNET-20220228
- Registrant
- CST Group Limited
- RIR
- RIPE NCC
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 212.46.57.0/24
212.46.57.0/24
Routing history
- Pattern
- Rotating
- First seen
- Jul 2009
- Current origin since
- Mar 2022 · 4.6 yr
- Origin networks
- 3
- Last change of origin
- Mar 2022
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 212.46.57.0/24 | AS8075 | /24 | RIPE | RPKI valid |
| 212.46.57.0/24 | AS14618 | /24 | RIPE | Another network |
| 212.46.57.0/24 | AS16509 | /24 | RIPE | Another network |
IRR
Route objects on 212.46.57.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8075 | RIPE | LIR-UK-CSTNET-1-MNT | Apr 6, 2022 | |
| AS8075 | RADB | Microsoft ByoIp | MAINT-AS8075 | Nov 13, 2023 |
| AS14618 not the origin | RIPE | LIR-UK-CSTNET-1-MNT | Mar 1, 2022 | |
| AS16509 not the origin | RIPE | LIR-UK-CSTNET-1-MNT | Mar 1, 2022 | |
| AS16509 not the origin | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 212.
46. 57. 0/ 24 - Netname
- UK-CSTNET-20220228
- Registrant
- CST Group Limited
- Registrant country
- GB
- Organization
- CST Group Limited (ORG-CGL22-RIPE)
- Org country
- GB
- Type
- ALLOCATED PA
- Created
- Feb 28, 2022
- Updated
- Jun 3, 2022
- Maintainer
- lir-uk-cstnet-1-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Feb 28, 2022
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cstnet. net - Name
- Abuse-C Role
- Handle
- AR66976-RIPE