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Data as of Nov 3, 2026

72.244.128.0/23

Anonymizer · ISP proxy

GTT Communications Inc. · space held by GTT Americas, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS3257
Type
ISP proxy
Risk
90 / 100 · Critical
Recent change
New origin Aug 2026
its first announcement on record
IPv4 market

Path

Announced by AS3257 since Aug 2026 · 10 wk ago
1 · Holder
GTT Americas, LLC
record created Mar 22, 2005 · reallocated to Internet Utilities NA LLC Jul 30, 2025
2 · Leased from
IPXO
3 · Announced by
AS3257 GTT Communications Inc.
since Aug 2026 · 10 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 72.244.128.0/23/24s
IPXO
512100%
2

Lineage

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

72.244.128.0/23

From the registry to its use

  1. Mar 22, 2005
    Registry record
    GTT Americas, LLC
    Direct Allocation
    72.244.0.0/15
  2. Sep 22, 2005– May 15, 2022
    Announced
    AS18566 GTT Americas, LLC
    as part of 72.244.0.0/15
    72.244.0.0/15
  3. Apr 29, 2023– Nov 2, 2026
    Announced
    AS3257 GTT Communications Inc.
    as part of 72.244.0.0/15
    72.244.0.0/15
  4. Jul 30, 2025
    Reallocated
    Internet Utilities NA LLC
    Reallocated
    72.244.0.0/16
  5. Jul 31, 2026
    Route object
    AS3257 GTT Communications Inc.
    ARIN route object for AS3257 GTT Communications Inc., maintainer MNT-GAL-104
  6. Aug 23, 2026– Nov 2, 2026
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  7. today
    Leased from
    IPXO
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
72.244.0.0/15
since Apr 2023
AS3257Internet providerIP broker IPXO (part)428
76 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
72.244.0.0/15131,072MEGAPATH-BLK-63GTT Americas, LLC (GAL-104) · USDirect AllocationMar 22, 2005[email protected]
└ 72.244.0.0/1665,536IPXO-GTTIPXO LLC (IL-845) · USReallocatedJul 18, 2025[email protected]
└ 72.244.0.0/1665,536NETUTILSInternet Utilities NA LLC (DCL-577) · USReallocatedJul 30, 2025[email protected]
└ 72.244.128.0/24256NET-72-244-128-0-24IPNetZone (IPNET-1) · USReallocatedMar 25, 2026[email protected]
└ 72.244.128.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026[email protected]
└ 72.244.129.0/24256NET-72-244-129-0-24IPNetZone (IPNET-1) · USReallocatedMar 25, 2026[email protected]
└ 72.244.129.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026[email protected]

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
GTT Americas, LLC
Handle
GAL-104
Range
72.244.0.0/15
Registration type
Direct Allocation
Record created
Mar 22, 2005
Reallocated to
Internet Utilities NA LLC (DCL-577)
Reallocated range
72.244.0.0/16
Reallocated
Jul 30, 2025
Origin network

AS3257

US
Name
GTT Communications Inc.
Type
Internet provider
Registered
Sep 30, 1994
Domain
gtt.net
Website
www.gtt.net
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
244