Data as of Nov 11, 2026
166.0.121.0/24
Anonymizer · ISP proxyCenturyLink Communications, LLC · space held by Ace Data Centers, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Oct 2, 2026
from AS401152 Ace Data Centers II, L.L.C.
IPv4 market
Path
Announced by AS3561 since Oct 2, 2026 · 6 wk ago
2 · Leased from
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 166.0.121.0/24 | /24s |
|---|---|---|
| Ace Data Centers | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
166.0.121.0/24
From the registry to its use
- Jul 10, 2012Registry recordAce Data Centers, Inc.Direct Allocation166.0.0.0/15
- Mar 24, 2023– Aug 2, 2023
- Sep 8, 2023– Sep 19, 2023
- Mar 30, 2024– Apr 12, 2026
- Apr 13, 2026– Oct 1, 2026
- May 21, 2026AssignedMetronetReassigned166.0.121.0/24
- Sep 30, 2026Route objectAS3561 CenturyLink Communications, LLCARIN route object for AS3561 CenturyLink Communications, LLC, maintainer MNT-ADC-96
- Oct 2, 2026– today
- todayLeased fromAce Data CentersIP broker
- todayLeased fromRackdogIP 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@ |
| └ 166.0.121.0/24 | 256 | METRONET | Metronet (C11600563) · US | Reassigned | May 21, 2026 | ipabuse@ via ACE-NETWORK-10 |
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
Origin network
AS3561
US
- Name
- CenturyLink Communications, LLC
- Type
- Internet provider
- Registered
- Oct 7, 1998
- Domain
- lumen.com
- Website
- www.lumen.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Mar 2023
- Current origin since
- Oct 2, 2026 · 1 mo
- Origin networks
- 5
- Last change of origin
- Oct 2, 2026
Recorded history
History
- Handoffs
- 4
Whois
Registration for this announcement
- Range
- 166.
0. 121. 0/ 24 - Netname
- METRONET
- Registrant
- Metronet
- Organization
- Metronet (C11600563)
- Type
- Reassigned
- Handle
- NET-166-0-121-0-1
- Parent
- NET-166-0-0-0-1
- Created
- May 21, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 10, 2012
- Status
- assigned
Report abuse
Abuse contact
- ipabuse@
acedatacenter. com - Name
- Abuse
- Phone
- +1-801-851-5540
- Handle
- ABUSE8727-ARIN