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Data as of Nov 8, 2026

66.253.99.0/24

Anonymizer · ISP proxy

NTT America, Inc. · space held by GTT Americas, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS2914
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Oct 22, 2026
from AS7029 Windstream Communications LLC
IPv4 market

Path

Announced by AS2914 since Oct 22, 2026 · 2 wk ago
1 · Holder
GTT Americas, LLC
record created Nov 21, 2005 · reallocated to Internet Utilities NA LLC Jul 22, 2025
2 · Leased from
IPXO
for its owner GTT Americas, LLC
3 · Announced by
AS2914 NTT America, Inc.
since Oct 22, 2026 · 2 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 66.253.99.0/24/24s
IPXO
256100%
1
Leased from

Owners leasing their own space

NameIn 66.253.99.0/24/24s
GTT Americas, LLC
256100%
1

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

66.253.99.0/24

From the registry to its use

  1. Nov 21, 2005
    Registry record
    GTT Americas, LLC
    Direct Allocation
    66.253.0.0/17
  2. Jul 8, 2006– Jun 8, 2016
    Announced
    AS23504 GTT Americas, LLC
    as part of 66.253.0.0/17
    66.253.0.0/17
  3. Jun 15, 2016– May 15, 2022
    Announced
    AS18566 GTT Americas, LLC
    as part of 66.253.0.0/17
    66.253.0.0/17
  4. Apr 29, 2023– today
    Announced
    AS3257 GTT Communications Inc.
    as part of 66.253.0.0/17
    66.253.0.0/17
  5. Jul 22, 2025
    Reallocated
    Internet Utilities NA LLC
    Reallocated
    66.253.64.0/18
  6. May 31, 2026– Jul 29, 2026
    Announced
    AS7029 Windstream Communications LLC
    Internet provider
  7. Oct 22, 2026– today
    Announced
    AS2914 NTT America, Inc.
    Internet provider
  8. Oct 27, 2026
    Route object
    IPXO
    RADB route object for AS2914 NTT America, Inc., maintainer MAINT-AS834
  9. Oct 27, 2026
    Route object
    IPXO
    ARIN route object for AS2914 NTT America, Inc., maintainer MNT-DCL-577
  10. Oct 27, 2026
    Route object
    IPXO
    RADB route object for AS9304 HGC Global Communications Limited, maintainer MAINT-AS834
  11. Oct 27, 2026
    Route object
    IPXO
    ARIN route object for AS9304 HGC Global Communications Limited, maintainer MNT-DCL-577
  12. Oct 30, 2026
    Route object
    IPXO
    RADB route object for AS6079 RCN, maintainer MAINT-AS834
  13. Oct 30, 2026
    Route object
    IPXO
    ARIN route object for AS6079 RCN, maintainer MNT-DCL-577

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesOperatorLeased fromProxy exitsHolderRPKI
66.253.0.0/17
since Apr 2023
AS3257Internet provider5121.6%ISP proxyProxy providersoperated by Bunnysold by NovadaIP broker IPXO (part)317
29 always on
GTT Americas, LLC

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
66.253.0.0/1732,768MEGAPATH-BLK-56GTT Americas, LLC (GAL-104) · USDirect AllocationNov 21, 2005abuse@gtt.net
└ 66.253.64.0/1816,384IPXO-GTTIPXO LLC (IL-845) · USReallocatedJul 18, 2025abuse@ipxo.com
└ 66.253.64.0/1816,384NETUTILSInternet Utilities NA LLC (DCL-577) · USReallocatedJul 22, 2025report@abuseradar.com
└ 66.253.96.0/204,096TURKNET-BROADBANDTurknet Iletisim Hizmetleri A.S (C11319578) · USReassignedAug 17, 2025report@abuseradar.com
via IPXO-GTT

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

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
GTT Americas, LLC
Handle
GAL-104
Range
66.253.0.0/17
Registration type
Direct Allocation
Record created
Nov 21, 2005
Reallocated to
Internet Utilities NA LLC (DCL-577)
Reallocated range
66.253.64.0/18
Reallocated
Jul 22, 2025
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