Data as of Nov 10, 2026
168.137.64.0/21
No anonymizer space · no proxy exits in 30 daysMicrosoft Corporation · space held by H&R Block
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 |
|---|---|---|---|---|---|---|
| 168.137.0.0/16 | 65,536 | HRBLOC | H&R Block (HRBLO) · US | Direct Allocation | May 10, 1994 | — |
| └ 168.137.64.0/21 | 2,048 | A3-INHB-CUSTOM-PREFIX | H&R Block (C10866934) · US | Reassigned | Jun 7, 2024 | — |
Network & registry
Registry
Holder
- Organization
- H&R Block
- Handle
- HRBLO
- Range
- 168.
137. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- May 10, 1994
- Legacy
- yes
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 2024
- Current origin since
- May 2024 · 2.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 168.
137. 64. 0/ 21 - Netname
- A3-INHB-CUSTOM-PREFIX
- Registrant
- H&R Block
- Organization
- H&R Block (C10866934)
- Type
- Reassigned
- Handle
- NET-168-137-64-0-1
- Parent
- NET-168-137-0-0-1
- Created
- Jun 7, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- May 10, 1994
- Status
- assigned
Report abuse
Abuse contact
- catherine.
durig@ hrblock. com - Name
- Durig, Catherine
- Phone
- +1-816-854-5104
- Handle
- DURIG2-ARIN