Data as of Nov 5, 2026
203.17.220.0/23
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by Austrade
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 |
|---|---|---|---|---|---|---|
| 203.17.216.0/21 | 2,048 | AUSTRADE-AU | Austrade (ORG-AA20-AP) · AU | ALLOCATED PORTABLE | — | ITS-Communications@ |
| └ 203.17.220.0/23 | 512 | AUSTRADE-AU | unknown | ALLOCATED NON-PORTABLE | — | ITS-Communications@ |
Network & registry
Registry
Holder
- Organization
- Austrade
- Handle
- ORG-AA20-AP
- Range
- 203.
17. 216. 0/ 21 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- Not named in the registry
- Reallocated range
- 203.
17. 220. 0/ 23 - Reallocation type
- ALLOCATED NON-PORTABLE
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
- Oct 2025
- Current origin since
- Oct 2025 · 1.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 203.17.220.0/23 | AS8075 | /24 | APNIC | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8075 | APNIC | Austrade | MAINT-AU-AUSTRADE | Aug 29, 2025 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 203.17.220.0/24 | AS8075 | APNIC | Austrade | MAINT-AU-AUSTRADE | Aug 27, 2025 |
| 203.17.221.0/24 | AS8075 | APNIC | Austrade | MAINT-AU-AUSTRADE | Aug 27, 2025 |
Whois
Registration for this announcement
- Range
- 203.
17. 220. 0/ 23 - Netname
- AUSTRADE-AU
- Registrant country
- AU
- Organization
- Not stated by the registry
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Aug 29, 2025
- Maintainer
- MAINT-AU-AUSTRADE
- RIR
- APNIC
- Country
- AU
- Delegated
- Jul 26, 1995
- Status
- assigned
Report abuse
Abuse contact
- ITS-Communications@
austrade. gov. au - Name
- ABUSE AUSTRADENONAU
- Handle
- AA2298-AP