Data as of Nov 6, 2026
103.61.63.0/24
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by Chinese Academy of Telecommunication Research
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 |
|---|---|---|---|---|---|---|
| 103.61.60.0/22 | 1,024 | CAICTNET | Chinese Academy of Telecommunication Research | ALLOCATED PORTABLE | — | ipas@ |
| └ 103.61.63.0/24 | 256 | RegistryNS4 | To authorize Microsoft to associate a prefix | ALLOCATED NON-PORTABLE | — | ipas@ |
Network & registry
Registry
Holder
- Organization
- Chinese Academy of Telecommunication Research
- Range
- 103.
61. 60. 0/ 22 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- To authorize Microsoft to associate a prefix
- Reallocated range
- 103.
61. 63. 0/ 24 - 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
- Rotating
- First seen
- Dec 2015
- Current origin since
- Sep 2025 · 1.2 yr
- Origin networks
- 3
- Last change of origin
- Sep 2025
Recorded history
History
- Handoffs
- 4
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 103.61.63.0/24 | AS8075 | /24 | APNIC | RPKI valid |
| 103.61.63.0/24 | AS12076 | /24 | APNIC | Another network |
| 103.61.63.0/24 | AS63582 | /24 | APNIC | Another network |
| 103.61.63.0/24 | AS63583 | /24 | APNIC | Another network |
| 103.61.63.0/24 | AS138457 | /24 | APNIC | Another network |
| 103.61.63.0/24 | AS139137 | /24 | APNIC | Another network |
| 103.61.63.0/24 | AS139140 | /24 | APNIC | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8075 | APNIC | Addresses from Azure | MAINT-CNNIC-AP | Sep 12, 2025 |
| AS8075 | RADB | Microsoft ByoIp | MAINT-AS8075 | Sep 26, 2025 |
| AS63582 not the origin | APNIC | Addresses from CNNIC | MAINT-CNNIC-AP | Dec 10, 2015 |
| AS63583 not the origin | APNIC | Addresses from CNNIC | MAINT-CNNIC-AP | Dec 10, 2015 |
| AS138457 not the origin | APNIC | China Academy of Information and Communications Technology | MAINT-CNNIC-AP | Sep 27, 2020 |
| AS139137 not the origin | APNIC | Chinese Academy of Telecommunication Research | MAINT-CNNIC-AP | Aug 10, 2020 |
| AS139140 not the origin | APNIC | Chinese Academy of Telecommunication Research | MAINT-CNNIC-AP | Aug 10, 2020 |
Whois
Registration for this announcement
- Range
- 103.
61. 63. 0/ 24 - Netname
- RegistryNS4
- Registrant
- To authorize Microsoft to associate a prefix
- Registrant country
- CN
- Organization
- To authorize Microsoft to associate a prefix
- Org country
- CN
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 12, 2025
- Maintainer
- MAINT-CNNIC-AP
- RIR
- APNIC
- Country
- CN
- Delegated
- Jun 24, 2015
- Status
- assigned
Report abuse
Abuse contact
- ipas@
cnnic. cn - Name
- ABUSE CNNICCN
- Handle
- AC1601-AP