Data as of Nov 3, 2026
173.211.3.0/24
Anonymizer · ISP proxyKarolio IT paslaugos, UAB · space held by Colocation America Corporation
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Jul 2026
from AS40676 Psychz Networks
IPv4 market
Path
Announced by AS211440 since Jul 2026 · 4 mo ago
1 · Holder
record created Oct 5, 2009 · reallocated to Internet Utilities NA LLC Jan 7, 2025
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 173.211.3.0/24 | /24s |
|---|---|---|---|
| IPRoyal | 256100% | 1 |
Leased from
Owners leasing their own space
| Name | In 173.211.3.0/24 | /24s |
|---|---|---|
| Colocation America Corporation | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
173.211.3.0/24
From the registry to its use
- Oct 5, 2009Registry recordColocation America CorporationDirect Allocation173.211.0.0/17
- May 15, 2010– Apr 15, 2011
- Aug 1, 2011– today
- Mar 18, 2024– Apr 22, 2024
- Mar 18, 2024– May 28, 2024
- Apr 23, 2024– May 28, 2024
- May 29, 2024– Jul 3, 2024
- Jul 4, 2024– Jun 28, 2025
- Jan 7, 2025ReallocatedInternet Utilities NA LLCReallocated173.211.3.0/24
- Jun 17, 2025– Jul 22, 2025
- Jul 23, 2025– Dec 25, 2025
- Feb 24, 2026– Mar 19, 2026AnnouncedAS402186 SeroWeb LLC
- Mar 8, 2026– Mar 31, 2026
- Apr 25, 2026– May 30, 2026
- Jul 6, 2026– today
- Jul 9, 2026Route objectIPXORADB route object for AS211440 Karolio IT paslaugos, UAB, maintainer MAINT-AS834
- Jul 9, 2026Route objectIPXOARIN route object for AS211440 Karolio IT paslaugos, UAB, maintainer MNT-DCL-577
- todayLeased fromIPXOIP broker
- todayUsedIPRoyalProxy seller
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Anonymizer addresses | Operator | Leased from | Holder | RPKI |
|---|---|---|---|---|---|---|---|
| 173.211.0.0/17 since Aug 2011 | AS21769 | Hosting | 7,16822%Datacenter proxy | Proxy providersoperated by Oxylabs | 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 |
|---|---|---|---|---|---|---|
| 173.211.0.0/17 | 32,768 | CAC-BLOCK7 | Colocation America Corporation (CAC-89) · US | Direct Allocation | Oct 5, 2009 | [email protected] |
| └ 173.211.3.0/24 | 256 | IPXO | IPXO LLC (IL-845) · US | Reallocated | Mar 5, 2024 | [email protected] |
| └ 173.211.3.0/24 | 256 | NETUTILS | Internet Utilities NA LLC (DCL-577) · US | Reallocated | Jan 7, 2025 | [email protected] |
| └ 173.211.3.0/24 | 256 | NET-173-211-3-0-24 | unknown | Reassigned | Jul 9, 2026 | [email protected] via IPXO |
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
- 173.211.0.0/17
- Registration type
- Direct Allocation
- Record created
- Oct 5, 2009
- Reallocated to
- Internet Utilities NA LLC (DCL-577)
- Reallocated range
- 173.211.3.0/24
- Reallocated
- Jan 7, 2025
Origin network
AS211440
LT
- Name
- Karolio IT paslaugos, UAB
- Type
- Hosting
- Registered
- Apr 21, 2021
- Domain
- simoresta.lt
- Website
- simoresta.lt
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Mar 2024
- Current origin since
- Jul 2026 · 4 mo
- Origin networks
- 9
- Last change of origin
- Jul 2026
Recorded history
History
- Handoffs
- 10
Whois
Registration for this announcement
- Range
- 173.211.3.0/24
- Netname
- NET-173-211-3-0-24
- 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-173-211-3-0-3
- Parent
- NET-173-211-3-0-2
- Created
- Jul 9, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 5, 2009
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Internet Utilities Abuse
- Phone
- +1-650-934-1667
- Handle
- IUA-ARIN