Data as of Nov 13, 2026
129.41.87.0/24
No anonymizer space · no proxy exits in 30 daysIBM
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 |
|---|---|---|---|---|---|---|
| 129.41.84.0/22 | 1,024 | IBM-RSCH-NET1 | IBM (IBM-1-Z) · US | Direct Allocation | Jul 29, 1987 | ipreg@ |
| └ 129.41.87.0/24 | 256 | IBMPOP-ASHBURN | unknown | Reassigned | May 24, 2023 | ipreg@ via IBM-RSCH-NET1 |
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
- IBM
- Handle
- IBM-1-Z
- Range
- 129.
41. 84. 0/ 22 - Registration type
- Direct Allocation
- Record created
- Jul 29, 1987
- Legacy
- yes
Origin network
AS17390
US
- Name
- IBM
- Type
- Business
- Registered
- Oct 18, 2010
- Domain
- ibm.com
- Website
- www.ibm.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2019
- Current origin since
- Feb 2019 · 7.7 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 129.
41. 87. 0/ 24 - Netname
- IBMPOP-ASHBURN
- Organization
- Not stated by the registry
- Type
- Reassigned
- Handle
- NET-129-41-87-0-1
- Parent
- NET-129-41-84-0-1
- Created
- May 24, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 29, 1987
- Status
- assigned
Report abuse
Abuse contact
- ipreg@
us. ibm. com - Name
- Registrar Authority, Internet numbers
- Phone
- +1-800-426-7378
- Handle
- RAIN-ARIN