Data as of Nov 11, 2026
74.248.32.0/19
1 residential-proxy exit · 30 daysMicrosoft Corporation
Residential-proxy exits
Proxy exits
1
0.01% of its addresses · 30 days
Oct 12, 2026 – Nov 10, 2026
Exits seen per day
1 observation
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 |
|---|---|---|---|---|---|---|
| 74.248.0.0/15 | 131,072 | MSFT | Microsoft Corporation (MSFT) · US | Direct Allocation | Dec 11, 2019 | abuse@ |
| └ 74.248.32.0/19 | 8,192 | BLS-74-248-32-0-1003020949 | PFN ADSL CBB (C02435471) · US | Reassigned | Mar 3, 2010 | abuse@ via MSFT |
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 74.248.0.0/15
- Prefix
- 74.248.0.0/15
- Announced by
- AS8075 Microsoft Corporation
- Type
- Hosting
- RPKI
- RPKI valid
- Netname
- MSFT
- Registrant
- Microsoft Corporation
- RIR
- ARIN
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 74.248.0.0/15
74.248.0.0/15
Routing history
- Pattern
- Stable
- First seen
- Jul 2020
- Current origin since
- Jul 2020 · 6.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 74.248.0.0/15 | AS8075 | /15 | ARIN | RPKI valid |
IRR
Route objects on 74.248.0.0/15
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8075 | RADB | Microsoft | MAINT-AS8075 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 74.
248. 0. 0/ 15 - 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-74-248-0-0-1
- Parent
- NET-74-0-0-0-0
- Created
- Dec 11, 2019
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 11, 2019
- Status
- assigned
Report abuse
Abuse contact
- abuse@
microsoft. com - Name
- Microsoft Abuse Contact
- Phone
- +1-425-882-8080
- Handle
- MAC74-ARIN