Data as of Nov 7, 2026
139.181.12.0/22
No anonymizer space · no proxy exits in 30 daysSiemens Industry Software 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 |
|---|---|---|---|---|---|---|
| 139.181.0.0/16 | 65,536 | SIEMENS-DISW-11 | Siemens Industry Software Inc. (SIS-377) · US | Direct Allocation | Mar 26, 1990 | gne-arin-abuse. |
| └ 139.181.12.0/22 | 1,024 | ORW-139-181-12-0-22 | Siemens Industry Software Inc. (C09707042) · US | Reassigned | Jun 23, 2023 | gne-arin-abuse. via SIEMENS-DISW-11 |
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
- Siemens Industry Software Inc.
- Handle
- SIS-377
- Range
- 139.
181. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Mar 26, 1990
- Legacy
- yes
Origin network
AS13541
US
- Name
- Siemens Industry Software Inc.
- Type
- Business
- Registered
- Sep 9, 1999
- Domain
- siemens.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Jan 2013 · 14 yr
- Origin networks
- 2
- Last change of origin
- Jan 2013
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS13541 | ARIN | 8005 SW Boeckman Road | MNT-SIS-377 | Mar 12, 2026 |
Whois
Registration for this announcement
- Range
- 139.
181. 12. 0/ 22 - Netname
- ORW-139-181-12-0-22
- Registrant
- Siemens Industry Software Inc.
- Organization
- Siemens Industry Software Inc. (C09707042)
- Type
- Reassigned
- Handle
- NET-139-181-12-0-1
- Parent
- NET-139-181-0-0-1
- Created
- Jun 23, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 26, 1990
- Status
- assigned
Report abuse
Abuse contact
- gne-arin-abuse.
sisw@ siemens. com - Name
- Siemens Industry Software Inc Abuse
- Phone
- +1-503-685-7000
- Handle
- SISA1-ARIN