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Data as of Nov 6, 2026

128.121.64.0/19

Anonymizer · ISP proxy

Windstream Communications LLC · space held by NTT America, Inc.

Announcement
this exact prefix
RPKI valid
Announced by
AS7029
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
NTT America, Inc.
record created Jul 11, 2000
2 · Leased from
Rackdog
for its owner NTT America, Inc.
3 · Announced by
AS7029 Windstream Communications LLC
since Sep 2025 · 14 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 128.121.64.0/19/24s
Rackdog
8,192100%
32
Leased from

Owners leasing their own space

NameIn 128.121.64.0/19/24s
NTT America, Inc.
8,192100%
32

Lineage

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

128.121.64.0/19

From the registry to its use

  1. Jul 11, 2000
    Registry record
    NTT America, Inc.
    Direct Allocation
    128.121.0.0/16
  2. Jun 29, 2025– today
    Announced
    AS6079 RCN
    as part of 128.121.64.0/18
    128.121.64.0/18
  3. Sep 21, 2025– today
    Announced
    AS7029 Windstream Communications LLC
    Internet provider
  4. May 19, 2026
    Assigned
    RCN
    Reassigned
    128.121.64.0/18
  5. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
128.121.64.0/18
since Jun 2025
AS6079ISP proxyIP broker RackdogNTT America, Inc.
128.121.0.0/16
since May 2005
AS2914Internet provider4
1 always on
NTT America, Inc.

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
128.121.0.0/1665,536NTTA-128-121NTT America, Inc. (NTTAM-1) · USDirect AllocationJul 11, 2000abuse@ntt.net
└ 128.121.64.0/1816,384RCN-128-241-64RCN (C11598210) · USReassignedMay 19, 2026abuse@ntt.net
via NTTA-128-121

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
NTT America, Inc.
Handle
NTTAM-1
Range
128.121.0.0/16
Registration type
Direct Allocation
Record created
Jul 11, 2000
Origin network

AS7029

US
Name
Windstream Communications LLC
Type
Internet provider
Registered
Jul 30, 1996
Domain
uniti.com
Website
www.uniti.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed