Data as of Nov 11, 2026
40.66.0.0/17
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation
Network & registry
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
- May 2020
- Current origin since
- May 2020 · 6.5 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 40.66.0.0/17 | AS8075 | /17 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8075 | RADB | Microsoft | MAINT-AS8075 | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 40.66.93.0/24 | AS8068 | RADB | Microsoft Edge | MAINT-AS8075 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 40.
64. 0. 0/ 13 - Netname
- MSFT
- Registrant
- Microsoft Corporation
- Organization
- Microsoft Corporation (MSFT)
- Org address
- One Microsoft Way, Redmond, WA, 98052
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-40-64-0-0-1
- Parent
- NET-40-0-0-0-0
- Created
- Feb 23, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 23, 2015
- Status
- assigned
Report abuse
Abuse contact
- abuse@
microsoft. com - Name
- Microsoft Abuse Contact
- Phone
- +1-425-882-8080
- Handle
- MAC74-ARIN