Data as of Nov 7, 2026
104.129.255.0/24
Anonymizer · Datacenter proxyUltra One · space held by Colocation America Corporation
Announcement
this exact prefix
RPKI valid
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
IPv4 market
Path
1 · Holder
record created Jul 1, 2022 · reallocated to Internet Utilities NA LLC Jan 7, 2025
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 104.129.255.0/24 | /24s |
|---|---|---|---|
| Ultra One | 256100% | 1 |
Leased from
Owners leasing their own space
| Name | In 104.129.255.0/24 | /24s |
|---|---|---|
| Colocation America Corporation | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
104.129.255.0/24
From the registry to its use
- Jul 1, 2014– Oct 1, 2014
- Oct 8, 2014– Jan 1, 2016
- Dec 22, 2015– Dec 12, 2016
- Feb 23, 2017– Apr 7, 2020
- Jul 1, 2020– Apr 9, 2022
- Jul 1, 2022Registry recordColocation America CorporationDirect Allocation104.129.240.0/20
- Jul 3, 2022– today
- Apr 23, 2024– Feb 28, 2025
- Jan 7, 2025ReallocatedInternet Utilities NA LLCReallocated104.129.254.0/23
- Feb 17, 2025– Jun 4, 2025
- May 24, 2025– Dec 1, 2025
- Feb 12, 2026– Mar 7, 2026
- Apr 13, 2026– today
- Apr 22, 2026AssignedInternet Utilities NA LLCReassigned104.129.255.0/24
- Apr 22, 2026Route objectIPXORADB route object for AS399989 Ultra One, maintainer MAINT-AS834
- Apr 22, 2026Route objectIPXOARIN route object for AS399989 Ultra One, maintainer MNT-DCL-577
- todayLeased fromIPXOIP broker
- todayUsedUltra OneProxy operator
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 104.129.240.0/20 since Jul 2022 | AS21769 | Hosting | IP broker IPXO (part) | Colocation America Corporation |
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 |
|---|---|---|---|---|---|---|
| 104.129.240.0/20 | 4,096 | CAC-BLOCK36 | Colocation America Corporation (CAC-89) · US | Direct Allocation | Jul 1, 2022 | Abuse@ |
| └ 104.129.254.0/23 | 512 | IPXO-LLC | IPXO LLC (IL-845) · US | Reallocated | Dec 8, 2023 | abuse@ |
| └ 104.129.254.0/23 | 512 | NETUTILS | Internet Utilities NA LLC (DCL-577) · US | Reallocated | Jan 7, 2025 | report@ |
| └ 104.129.255.0/24 | 256 | NET-104-129-255-0-24 | unknown | Reassigned | Apr 22, 2026 | report@ via IPXO-LLC |
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
IPv4 market
Holder
- Organization
- Colocation America Corporation
- Handle
- CAC-89
- Range
- 104.
129. 240. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Jul 1, 2022
- Reallocated to
- Internet Utilities NA LLC (DCL-577)
- Reallocated range
- 104.
129. 254. 0/ 23 - Reallocated
- Jan 7, 2025
Origin network
AS399989
US
- Name
- Ultra One
- Type
- Hosting
- Registered
- Aug 25, 2021
- Domain
- ultra.one
- Industry
- Hosting, Cloud Provider, Data Center, Server Colocation
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Feb 2017
- Current origin since
- Apr 2026 · 7 mo
- Origin networks
- 6
- Last change of origin
- Apr 2026
Recorded history
History
- Handoffs
- 5
Whois
Registration for this announcement
- Range
- 104.
129. 255. 0/ 24 - Netname
- NET-104-129-255-0-24
- Registrant
- Internet Utilities NA LLC
- Organization
- Internet Utilities NA LLC (DCL-577)
- Org address
- 2711 Centerville Road, Wilmington, DE, 19808
- Org country
- US
- Type
- Reassigned
- Handle
- NET-104-129-255-0-1
- Parent
- NET-104-129-254-0-2
- Created
- Apr 22, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 1, 2022
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse
- Phone
- +1-650-934-1667
- Handle
- IUA-ARIN