Data as of Nov 3, 2026
166.88.237.0/24
Anonymizer · ISP proxyNTT America, Inc. · space held by Ace Data Centers II, L.L.C.
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin May 2026
from AS7488 CNServer LLC
IPv4 market
Path
Announced by AS2914 since May 2026 · 5 mo ago
2 · Leased from
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 166.88.237.0/24 | /24s |
|---|---|---|
| Ace Data Centers | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
166.88.237.0/24
From the registry to its use
- Oct 26, 2012Registry recordAce Data Centers II, L.L.C.Direct Allocation166.88.0.0/16
- Mar 21, 2019– Apr 1, 2019
- Dec 4, 2020– Sep 17, 2021AnnouncedAS1239 Cogent Communications, LLC
- May 29, 2024– Sep 8, 2025
- Aug 28, 2025– Dec 1, 2025
- Nov 20, 2025– Dec 1, 2025
- Dec 2, 2025– Dec 25, 2025Announced
- Dec 14, 2025– Jan 6, 2026
- Jan 19, 2026– Mar 31, 2026
- Apr 1, 2026– May 6, 2026
- May 21, 2026AssignedMetronetReassigned166.88.237.0/24
- May 31, 2026– Nov 2, 2026
- Jun 5, 2026Route objectAS2914 NTT America, Inc.ARIN route object for AS2914 NTT America, Inc., maintainer MNT-ADCIL
- todayLeased fromAce Data CentersIP 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 |
|---|---|---|---|---|---|---|
| 166.88.0.0/16 | 65,536 | ADCIL | Ace Data Centers II, L.L.C. (ADCIL) · US | Direct Allocation | Oct 26, 2012 | [email protected] |
| └ 166.88.237.0/24 | 256 | METRONET | Metronet (C11600590) · US | Reassigned | May 21, 2026 | [email protected] via ADCIL |
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 II, L.L.C.
- Handle
- ADCIL
- Range
- 166.88.0.0/16
- Registration type
- Direct Allocation
- Record created
- Oct 26, 2012
Origin network
AS2914
US
- Name
- NTT America, Inc.
- Type
- Internet provider
- Registered
- Dec 7, 1998
- Domain
- ntt.net
- Website
- www.gin.ntt.net/
- 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 2019
- Current origin since
- May 2026 · 5 mo
- Origin networks
- 9
- Last change of origin
- May 2026
Recorded history
History
- Handoffs
- 9
Whois
Registration for this announcement
- Range
- 166.88.237.0/24
- Netname
- METRONET
- Registrant
- Metronet
- Organization
- Metronet (C11600590)
- Type
- Reassigned
- Handle
- NET-166-88-237-0-1
- Parent
- NET-166-88-0-0-1
- Created
- May 21, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 26, 2012
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Abuse
- Phone
- +1-801-851-5540
- Handle
- ABUSE8727-ARIN