Data as of Nov 11, 2026
64.37.231.0/24
No anonymizer space · no proxy exits in 30 daysTrustwave Holdings, Inc. · space held by CenturyLink Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 64.37.192.0/18 since May 2005 | AS3561 | Internet provider | CenturyLink Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 64.37.192.0/18 | 16,384 | CENTURYLINK-LEGACY-SAVVIS-BLK222 | CenturyLink Communications, LLC (CCL-534) · US | Direct Allocation | Feb 10, 2000 | abuse@ |
| └ 64.37.231.0/24 | 256 | LB-USEL2DC-V4-01 | Trustwave (TRUST-25) · US | Reallocated | Jan 29, 2010 | — |
Network & registry
IPv4 market
Holder
- Organization
- CenturyLink Communications, LLC
- Handle
- CCL-534
- Range
- 64.
37. 192. 0/ 18 - Registration type
- Direct Allocation
- Record created
- Feb 10, 2000
- Reallocated to
- Trustwave (TRUST-25)
- Reallocated range
- 64.
37. 231. 0/ 24 - Reallocated
- Jan 29, 2010
Origin network
AS33151
US
- Name
- Trustwave Holdings, Inc.
- Type
- Business
- Registered
- Oct 14, 2004
- Domain
- trustwave.com
- Website
- trustwave.com
- Industry
- Technology Consulting Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2026
- Current origin since
- Jan 2026 · 10 mo
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33151 | RADB | Trustwave Holdings, Inc. | MAINT-AS27506 | Apr 30, 2026 |
Whois
Registration for this announcement
- Range
- 64.
37. 231. 0/ 24 - Netname
- LB-USEL2DC-V4-01
- Registrant
- Trustwave
- Organization
- Trustwave (TRUST-25)
- Org address
- 70 West Madison Street, CHICAGO, IL, 60602
- Org country
- US
- Type
- Reallocated
- Handle
- NET-64-37-231-0-1
- Parent
- NET-64-37-192-0-1
- Created
- Jan 29, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 10, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
aup. lumen. com - Name
- Centurylink Abuse Desk
- Phone
- +1-877-886-6515
- Handle
- CAD54-ARIN