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Data as of Nov 9, 2026

66.17.144.0/21

No anonymizer space · no proxy exits in 30 days

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

Announcement
66.17.128.0/17
No RPKI
Announced by
AS3257
Type
Internet provider
50% of it

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
66.17.148.0/22
since Nov 3, 2026
AS265627ResidentialGTT Americas, LLC
66.17.148.0/24
since Nov 3, 2026
AS265627ResidentialGTT Americas, LLC

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
66.17.128.0/1732,768RGS-BLK6GTT Americas, LLC (GAL-104) · USDirect AllocationNov 18, 2002abuse@gtt.net
└ 66.17.144.0/221,024GTT-BITE-HRS-NETunknown———
└ 66.17.148.0/221,024NIDIX-NET-GTTNidix Networks (C11739960) · MXReassignedOct 16, 2026abuse@gtt.net
via RGS-BLK6

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses
TypeAddressesShareRanges
Internet provider1,02450%1
Residential1,02450%2

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 66.17.128.0/17

Prefix
66.17.128.0/17
Announced by
AS3257 GTT Communications Inc.
Type
Internet provider
Proxy exits
9
RPKI
No RPKI
Netname
RGS-BLK6
Registrant
GTT Americas, LLC
RIR
ARIN
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
239