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Data as of Nov 3, 2026

194.77.72.0/21

1,792 anonymizer addresses · 88% · ISP proxy

GTT Communications Inc.

Announcement
this exact prefix
No RPKI
Announced by
AS3257
Type
ISP proxy
88% of it
IPv4 market

Path

1 · Holder
GTT Communications Inc.
record created Mar 31, 2021
2 · Leased from
IPXO
for its owner GTT Communications Inc.
3 · Announced by
AS3257 GTT Communications Inc.
since Oct 2023 · 3.1 yr ago
4 · Use
Proxy providersnamed Ashburn Proxies
ISP proxy

Operators, sellers and brokers

Proxy providers

NameParentIn 194.77.72.0/21/24s
Ashburn Proxies
1,02450%
4
Leased from

IP brokers

NameIn 194.77.72.0/21/24s
IPXO
76838%
3
Leased from

Owners leasing their own space

NameIn 194.77.72.0/21/24s
GTT Communications Inc.
1,28063%
5

Lineage

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

194.77.72.0/21

From the registry to its use

  1. Jun 11, 2017– Oct 13, 2023
    Announced
    AS5669 GTT Americas, LLC
  2. Mar 31, 2021
    Registry record
    GTT Communications Inc.
    ALLOCATED PA
    194.77.66.0 - 194.77.85.255
  3. Sep 29, 2023
    Route object
    AS3257 GTT Communications Inc.
    RIPE route object for AS3257 GTT Communications Inc., maintainer AS3257-ROUTE-MNT
  4. Oct 2, 2023– Nov 2, 2026
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  5. Apr 29, 2026
    Route object
    AS3257 GTT Communications Inc.
    RIPE route object for AS3257 GTT Communications Inc., maintainer AS3257-ROUTE-MNT
    194.77.76.0/23
  6. Sep 29, 2026
    Route object
    IPXO
    RADB route object for AS979 NetLab Global, maintainer MAINT-AS834
    194.77.76.0/23
  7. Sep 29, 2026
    Route object
    IPXO
    RADB route object for AS137897 PAN-Lian Technology Co., Limited, maintainer MAINT-AS834
    194.77.76.0/23
  8. Sep 29, 2026
    Route object
    IPXO
    RADB route object for AS206675 PAN-Lian Technology Co., Limited, maintainer MAINT-AS834
    194.77.76.0/23
  9. Sep 29, 2026
    Route object
    IPXO
    RADB route object for AS400618 Prime Security Corp., maintainer MAINT-AS834
    194.77.76.0/23
  10. Oct 22, 2026
    Route object
    IPXO
    RADB route object for AS218701 Hatam AM Shop LLC, maintainer MAINT-AS834
    194.77.76.0/23
  11. today
    Leased from
    IPXO
    IP broker
  12. today
    Used
    Ashburn Proxies
    Proxy seller

Announcements

More specific

Announcements inside

PrefixOriginTypeOperatorLeased fromHolderRPKI
194.77.72.0/22
since Aug 2026
AS54004ISP proxyProxy providersoperated by Ashburn ProxiesIP broker IPXOGTT Communications Inc.
via Exo Broadband
194.77.78.0/24
since Sep 2026
AS9304ISP proxyIP broker IPXOGTT Communications Inc.
via StarNet InfoTech Consulting Limited

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
194.77.66.0 - 194.77.85.2555,120US-GTTCOMMUNICATIONS-19951016GTT Communications Inc. (ORG-GCI2-RIPE) · USALLOCATED PAMar 31, 2021[email protected]
└ 194.77.72.0/221,024Exo-BroadbandExo Broadband (ORG-EB151-RIPE) · USSUB-ALLOCATED PAApr 29, 2026[email protected]
└ 194.77.73.0/2732NETWORKX-NETNetWorX Internet Michael Weiß e.K.ASSIGNED PAJan 11, 2005[email protected]
via Exo-Broadband
└ 194.77.73.48/298MEYER-HOLSEN-NETMeyer-Holsen GmbHASSIGNED PAJan 14, 2005[email protected]
via Exo-Broadband
└ 194.77.73.152/298CSD-netCSD Management Consulting GmbHASSIGNED PAFeb 1, 2005[email protected]
via Exo-Broadband
└ 194.77.73.160/298CSD-netCSD Management Consulting GmbHASSIGNED PAFeb 1, 2005[email protected]
via Exo-Broadband
└ 194.77.74.0/298HAASEEDV-NETJens Haase EDV ConsultingASSIGNED PAFeb 10, 2005[email protected]
via Exo-Broadband
└ 194.77.74.32/298PNOWACK-NETPeter NowackASSIGNED PAFeb 23, 2005[email protected]
via Exo-Broadband
└ 194.77.76.0/23512IPXO-GTTunknownSUB-ALLOCATED PAApr 29, 2026[email protected]
└ 194.77.76.208/2816kuppinger-netMartin KuppingerASSIGNED PAApr 2, 2004[email protected]
via IPXO-GTT
└ 194.77.77.80/298k2l-netK2L GmbHASSIGNED PAJul 5, 2004[email protected]
via IPXO-GTT
└ 194.77.78.0/24256NET-194-77-78-0-24StarNet InfoTech Consulting Limited (ORG-SICL4-RIPE) · HKSUB-ALLOCATED PAApr 29, 2026[email protected]
└ 194.77.79.64/2664Hypersoft1-netHypersoft GmbHASSIGNED PAApr 24, 2012[email protected]
via US-GTTCOMMUNICATIONS-19951016
└ 194.77.79.128/2664OBETA-netOskar Boettcher GmbH & Co. KGASSIGNED PAApr 27, 2012[email protected]
via US-GTTCOMMUNICATIONS-19951016

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
ISP proxyanonymizer1,79288%3
Business1286.3%2
Internet provider1286.3%2

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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