Data as of Nov 4, 2026
192.243.87.0/24
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by McGraw-Hill Education
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 |
|---|---|---|---|---|---|---|
| 192.243.80.0/20 | 4,096 | MGEHL-NET-BLOCK-01 | McGraw-Hill Education (MGEHL) · US | Direct Allocation | Jul 25, 2013 | abuse@ |
| └ 192.243.87.0/24 | 256 | AZURE-SOUTH-CENTRAL-US | unknown | Reassigned | Sep 28, 2023 | abuse@ via MGEHL-NET-BLOCK-01 |
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
- McGraw-Hill Education
- Handle
- MGEHL
- Range
- 192.
243. 80. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Jul 25, 2013
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 2023
- Current origin since
- Oct 2023 · 3.1 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 192.
243. 87. 0/ 24 - Netname
- AZURE-SOUTH-CENTRAL-US
- Registrant
- McGraw-Hill Education
- Organization
- McGraw-Hill Education (MGEHL)
- Org address
- 1325 6th ave, New York, NY, 10019
- Org country
- US
- Type
- Reassigned
- Handle
- NET-192-243-87-0-1
- Parent
- NET-192-243-80-0-1
- Created
- Sep 28, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 25, 2013
- Status
- assigned
Report abuse
Abuse contact
- abuse@
mheducation. com - Name
- MHE Abuse Operations Center
- Phone
- +1-617-859-6003
- Handle
- MAOC-ARIN