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Data as of Nov 7, 2026

66.166.0.0/15

100,864 anonymizer addresses · 77%

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

Announcement
this exact prefix
No RPKI
Announced by
AS3257
Type
ISP proxy
73% of it

Residential-proxy exits

Proxy exits
3
<0.01% of its addresses · listed by providers
Spread
3 of 512
/24s with at least one exit
Providers
2
selling exits here

/24s with the most always-on exits

/24Always-on exitsProxy exits
66.166.67.0/2401
66.167.6.0/2401
66.167.53.0/2401

Proxy providers listing exits

  • GSocks
  • ProxyRack
IPv4 market

Path

1 · Holder
GTT Americas, LLC
record created Sep 10, 2001
2 · Leased from
IPNetZone, ARISK
for its owner GTT Americas, LLC
3 · Announced by
AS3257 GTT Communications Inc.
since Apr 2023 · 3.5 yr ago
4 · Use
Proxy providersnamed Bright Data, Oxylabs, Flux Telecom, Bunny
ISP proxy

Operators, sellers and brokers

Proxy providers

NameParentKindIn 66.166.0.0/15/24s
Bright DataProxy seller
18,17614%
71
OxylabsTesonetProxy seller
4,0963.1%
16
Flux TelecomProxy operator
2,0481.6%
8
BunnyProxy operator
1,0240.78%
4
Leased from

IP brokers

NameIn 66.166.0.0/15/24s
IPNetZone
68,86453%
269
ARISK
6,6565.1%
26
Leased from

Owners leasing their own space

NameIn 66.166.0.0/15/24s
GTT Americas, LLC
97,53674%
381

Lineage

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

66.166.0.0/15

From the registry to its use

  1. Sep 10, 2001
    Registry record
    GTT Americas, LLC
    Direct Allocation
    66.166.0.0/15
  2. May 9, 2005– May 15, 2022
    Announced
    AS18566 GTT Americas, LLC
  3. Jul 9, 2018
    Route object
    AS9751 American Samoa Telecommunications Authority
    RADB route object for AS9751 American Samoa Telecommunications Authority, maintainer MAINT-AS11404
    66.167.226.0/24
  4. Apr 29, 2023– today
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  5. Apr 11, 2025
    Route object
    AS3257 GTT Communications Inc.
    RADB route object for AS3257 GTT Communications Inc., maintainer MAINT-AS3257
  6. May 7, 2025
    Route object
    AS3257 GTT Communications Inc.
    ARIN route object for AS3257 GTT Communications Inc., maintainer MNT-GAL-104
  7. Aug 29, 2025
    Route object
    AS22773 Cox Communications Inc.
    ARIN route object for AS22773 Cox Communications Inc., maintainer MNT-GAL-104
    66.166.0.0/16
  8. Aug 29, 2025
    Route object
    AS22773 Cox Communications Inc.
    ARIN route object for AS22773 Cox Communications Inc., maintainer MNT-GAL-104
    66.167.32.0/19
  9. Aug 29, 2025
    Route object
    AS22773 Cox Communications Inc.
    ARIN route object for AS22773 Cox Communications Inc., maintainer MNT-GAL-104
    66.167.96.0/19
  10. Sep 24, 2026
    Route object
    AS22773 Cox Communications Inc.
    RADB route object for AS22773 Cox Communications Inc., maintainer MAINT-AS14713
    66.167.32.0/19
  11. Sep 24, 2026
    Route object
    AS22773 Cox Communications Inc.
    RADB route object for AS22773 Cox Communications Inc., maintainer MAINT-AS14713
    66.167.96.0/19
  12. today
    Used
    Bright Data
    Proxy seller
  13. today
    Used
    Oxylabs
    Proxy seller
  14. today
    Used
    Flux Telecom
    Proxy operator
  15. today
    Used
    Bunny
    Proxy operator

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

Arrived
PrefixOriginTypeAnonymizer addressesOperatorLeased fromProxy exitsHolderRPKI
66.166.0.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.16.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.32.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.166.48.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.64.0/20
since Oct 22, 2026
AS22773Unknown3,84094%ISP proxy1GTT Americas, LLC
via IPNetZone
66.166.80.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.96.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.166.112.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.128.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.166.144.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.160.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.164.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.168.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.172.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.176.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.180.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.184.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.188.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.192.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.196.0/22
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.200.0/21
since Oct 22, 2026
AS22773UnknownallISP proxyGTT Americas, LLC
via IPNetZone
66.166.208.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.166.224.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.166.240.0/20
since Oct 22, 2026
AS22773ISP proxyGTT Americas, LLC
via IPNetZone
66.167.0.0/23
since May 2026
AS401783ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.2.0/23
since Oct 2025
AS9304ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.4.0/23
since May 2026
AS402363ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.6.0/23
since Sep 18, 2026
AS3257ISP proxyIP broker ARISK1GTT Americas, LLC
via Arisk Communications inc.
66.167.8.0/22
since May 2026
AS7459ISP proxyProxy providersoperated by Flux TelecomGTT Americas, LLC
66.167.12.0/23
since Mar 2026
AS20001ISP proxyIP broker IPNetZoneGTT Americas, LLC
via IPNetZone
66.167.15.0/24
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.16.0/20
since Sep 28, 2026
AS11611Internet providerGTT Americas, LLC
via Arctic Fox Networks Inc
66.167.32.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.167.48.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright Data1GTT Americas, LLC
via IPNetZone
66.167.64.0/23
since Oct 2025
AS30058Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.66.0/23
since Nov 2025
AS55470Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.68.0/23
since Nov 2025
AS212238Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.70.0/23
since Nov 2025
AS59711Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.72.0/23
since Nov 2025
AS59711Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.74.0/23
since Oct 2025
AS30058Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.76.0/23
since Oct 2025
AS6762ISP proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.78.0/23
since Oct 2025
AS30058Datacenter proxyProxy providersoperated by OxylabsGTT Americas, LLC
66.167.80.0/23
since Sep 18, 2026
AS3257ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.82.0/23
since Oct 2025
AS9304ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.84.0/23
since May 2026
AS401783ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.86.0/23
since Apr 2026
AS401783ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.90.0/24
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.92.0/22
since Mar 2026
AS11427ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.96.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.167.112.0/20
since Oct 22, 2026
AS22773ISP proxyProxy providersoperated by Bright DataGTT Americas, LLC
via IPNetZone
66.167.128.0/21
since Jan 2026
AS11427ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.136.0/22
since Dec 2025
AS401783ISP proxyIP broker ARISKGTT Americas, LLC
66.167.140.0/23
since May 2026
AS402363ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.142.0/23
since May 2026
AS402363ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.144.0/24
since Aug 2025
AS21859Datacenter proxyProxy providersoperated by BunnyGTT Americas, LLC
via Bunny Communications
66.167.147.0/24
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.151.0/24
since Aug 2025
AS21859Datacenter proxyProxy providersoperated by BunnyGTT Americas, LLC
via Bunny Communications
66.167.164.0/24
since Apr 2023
AS26669UnknownGTT Americas, LLC
66.167.166.0/24
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.169.0/24
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN
66.167.172.0/22
since May 2026
AS7459ISP proxyProxy providersoperated by Flux TelecomGTT Americas, LLC
66.167.201.0/24
since Aug 2025
AS21859Datacenter proxyProxy providersoperated by BunnyGTT Americas, LLC
via Bunny Communications
66.167.202.0/23
since Sep 18, 2026
AS3257ISP proxyIP broker ARISKGTT Americas, LLC
via Arisk Communications inc.
66.167.204.0/24
since Aug 2025
AS21859Datacenter proxyProxy providersoperated by BunnyGTT Americas, LLC
via Bunny Communications
66.167.206.0/23
since Aug 2026
AS3257ISP proxyIP broker IPNetZoneGTT Americas, LLC
via RCN

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
66.166.0.0/15131,072MEGAPATH-BLK-55GTT Americas, LLC (GAL-104) · USDirect AllocationSep 10, 2001abuse@gtt.net
└ 66.166.0.0/1665,536GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedSep 25, 2025ipabuse@unsi.net
└ 66.167.0.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.0.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.2.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.2.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.4.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.4.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.6.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.6.0/23512ARISK-GTTunknownReassignedJan 6, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.8.0/221,024FLUXSTREAM-GTTunknownReassignedApr 14, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.12.0/23512GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedFeb 25, 2026ipabuse@unsi.net
└ 66.167.12.0/23512GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedFeb 26, 2026ipabuse@unsi.net
└ 66.167.15.0/24256GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.15.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com
└ 66.167.16.0/204,096NET-V4-GTT-BLK14Arctic Fox Networks Inc (AFN-35) · USReallocatedFeb 23, 2026dmcanotice@arcticfox.dev
└ 66.167.32.0/198,192BRIGHT-GTTIPNetZone (IPNET-1) · USReallocatedNov 3, 2026ipabuse@unsi.net
└ 66.167.64.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.66.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.68.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.70.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.72.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.74.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.76.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.78.0/23512GTT-CUST-PON2820636unknownReassignedJan 27, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.80.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.80.0/23512ARISK-GTTunknownReassignedJan 6, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.82.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.82.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.84.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.84.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.86.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.86.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.90.0/24256GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.90.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com
└ 66.167.92.0/221,024GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedFeb 25, 2026ipabuse@unsi.net
└ 66.167.92.0/221,024RCN-GTTRCN (RTSL-6) · USReallocatedOct 23, 2026abuse@rcn.com
└ 66.167.96.0/198,192BRIGHT-GTTIPNetZone (IPNET-1) · USReallocatedNov 3, 2026ipabuse@unsi.net
└ 66.167.128.0/212,048GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedDec 21, 2025ipabuse@unsi.net
└ 66.167.128.0/212,048RCN-GTTRCN (RTSL-6) · USReallocatedOct 23, 2026abuse@rcn.com
└ 66.167.136.0/221,024GTT-CUSTOMERunknownReassignedDec 10, 2025abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.140.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.140.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.142.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.142.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.144.0/24256BUNNY1-ARIN-GTTBunny Communications (BCL-435) · USReallocatedSep 4, 2025abuse@bunnycommunications.com
└ 66.167.147.0/24256GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.147.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com
└ 66.167.151.0/24256BUNNY1-ARIN-GTTBunny Communications (BCL-435) · USReallocatedSep 4, 2025abuse@bunnycommunications.com
└ 66.167.166.0/24256GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.166.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com
└ 66.167.169.0/24256GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.169.0/24256RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com
└ 66.167.172.0/221,024FLUXSTREAM-GTTunknownReassignedApr 14, 2026abuse@gtt.net
via MEGAPATH-BLK-55
└ 66.167.201.0/24256BUNNY1-ARIN-GTTBunny Communications (BCL-435) · USReallocatedSep 4, 2025abuse@bunnycommunications.com
└ 66.167.202.0/23512GTT-ARISK-NETArisk Communications inc. (AC-5396) · USReallocatedOct 9, 2025support@ariskisp.com
└ 66.167.202.0/23512GTTunknownReassignedJan 11, 2026support@ariskisp.com
via GTT-ARISK-NET
└ 66.167.204.0/24256BUNNY1-ARIN-GTTBunny Communications (BCL-435) · USReallocatedSep 4, 2025abuse@bunnycommunications.com
└ 66.167.206.0/23512GTT-CUSTOMERIPNetZone (IPNET-1) · USReallocatedJul 31, 2026ipabuse@unsi.net
└ 66.167.206.0/23512RCN-GTTRCN (RTSL-6) · USReallocatedSep 25, 2026abuse@rcn.com

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

131,072 addresses
TypeAddressesShareRanges
ISP proxyanonymizer96,25673%116
Internet provider29,69623%13
Datacenter proxyanonymizer4,6083.5%11
Unknown5120.39%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