Data as of Nov 5, 2026
166.0.21.0/24
No anonymizer space · no proxy exits in 30 daysG-Core Labs S.A. · space held by Ace Data Centers, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recently moved
Recent change
New origin Jun 2026
from AS834 IPXO LLC, after 2.9 years unannounced
registry: reallocated to Internet Utilities NA LLC by Ace Data Centers, Inc., Jun 19, 2026
IPv4 market
Path
Announced by AS199524 since Jun 2026 · 4 mo ago
1 · Holder
record created Jul 10, 2012 · reallocated to Internet Utilities NA LLC Jun 19, 2026
2 · Leased from
4 · Use
Hosting
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
166.0.21.0/24
From the registry to its use
- Jul 10, 2012Registry recordAce Data Centers, Inc.Direct Allocation166.0.0.0/15
- Mar 24, 2023– Apr 16, 2023
- Apr 5, 2023– Apr 28, 2023
- Apr 29, 2023– Jun 3, 2023
- Jun 16, 2023– Aug 2, 2023
- Jul 22, 2023– Aug 14, 2023
- Jun 19, 2026ReallocatedInternet Utilities NA LLCReallocated166.0.21.0/24
- Jun 22, 2026Route objectIPXORADB route object for AS199524 G-Core Labs S.A., maintainer MAINT-AS834
- Jun 22, 2026Route objectIPXOARIN route object for AS199524 G-Core Labs S.A., maintainer MNT-DCL-577
- Jun 24, 2026– today
- todayLeased fromAce Data CentersIP broker
- todayLeased fromIPXOIP broker
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 |
|---|---|---|---|---|---|---|
| 166.0.0.0/15 | 131,072 | ACE-NETWORK-10 | Ace Data Centers, Inc. (ADC-96) · US | Direct Allocation | Jul 10, 2012 | ipabuse@ |
| └ 166.0.21.0/24 | 256 | IPXO | IPXO LLC (IL-845) · US | Reallocated | Jun 18, 2026 | abuse@ |
| └ 166.0.21.0/24 | 256 | NETUTILS | Internet Utilities NA LLC (DCL-577) · US | Reallocated | Jun 19, 2026 | report@ |
| └ 166.0.21.0/24 | 256 | NET-166-0-21-0-24 | unknown | Reassigned | Jun 21, 2026 | report@ 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
- Ace Data Centers, Inc.
- Handle
- ADC-96
- Range
- 166.
0. 0. 0/ 15 - Registration type
- Direct Allocation
- Record created
- Jul 10, 2012
- Reallocated to
- Internet Utilities NA LLC (DCL-577)
- Reallocated range
- 166.
0. 21. 0/ 24 - Reallocated
- Jun 19, 2026
Origin network
AS199524
LU
- Name
- G-Core Labs S.A.
- Type
- Hosting
- Registered
- Dec 10, 2012
- Domain
- gcore.com
- Website
- gcore.com/
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 10
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Reactivated
- First seen
- Mar 2023
- Current origin since
- Jun 2026 · 4 mo
- Origin networks
- 5
- Last change of origin
- Jun 2026
Recorded history
History
- Handoffs
- 5
Whois
Registration for this announcement
- Range
- 166.
0. 21. 0/ 24 - Netname
- NET-166-0-21-0-24
- 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-166-0-21-0-3
- Parent
- NET-166-0-21-0-2
- Created
- Jun 21, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 10, 2012
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse
- Phone
- +1-650-934-1667
- Handle
- IUA-ARIN