Data as of Nov 15, 2026
208.90.237.0/24
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by Trustwave Holdings, Inc.
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 |
|---|---|---|---|---|---|---|
| 208.90.236.0/22 | 1,024 | 8E6-NET-1 | Trustwave Holdings, Inc. (TRUST-7) · US | Direct Allocation | May 22, 2008 | soc@ |
| └ 208.90.237.0/24 | 256 | AZ-GLOBAL-PREFIX-SET2 | Trustwave (C11328861) · US | Reassigned | Aug 25, 2025 | soc@ via 8E6-NET-1 |
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
Registry
Holder
- Organization
- Trustwave Holdings, Inc.
- Handle
- TRUST-7
- Range
- 208.
90. 236. 0/ 22 - Registration type
- Direct Allocation
- Record created
- May 22, 2008
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
- Jun 2019
- Current origin since
- Dec 2025 · 11 mo
- Origin networks
- 3
- Last change of origin
- Dec 2025
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 208.
90. 237. 0/ 24 - Netname
- AZ-GLOBAL-PREFIX-SET2
- Registrant
- Trustwave
- Organization
- Trustwave (C11328861)
- Type
- Reassigned
- Handle
- NET-208-90-237-0-1
- Parent
- NET-208-90-236-0-1
- Created
- Aug 25, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- May 22, 2008
- Status
- assigned
Report abuse
Abuse contact
- soc@
levelblue. com - Name
- LevelBlue SOC
- Phone
- +1-877-899-2229
- Handle
- LEVEL5-ARIN