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Data as of Nov 8, 2026

91.143.176.0/20

1,536 anonymizer addresses · 38% · ISP proxy

GTT Communications Inc. · space held by GTT - EMEA Ltd.

Announcement
this exact prefix
No RPKI
Announced by
AS3257
Type
Internet provider
50% of it
IPv4 market

Path

1 · Holder
GTT - EMEA Ltd.
record created Nov 2, 2006
2 · Leased from
IPXO
for its owner GTT - EMEA Ltd.
3 · Announced by
AS3257 GTT Communications Inc.
since Aug 2023 · 3.3 yr ago
4 · Use
Proxy providersnamed Ashburn Proxies
Internet provider

Operators, sellers and brokers

Proxy providers

NameParentIn 91.143.176.0/20/24s
Ashburn Proxies
1,02425%
4
Leased from

IP brokers

NameIn 91.143.176.0/20/24s
IPXO
51213%
2
Leased from

Owners leasing their own space

NameIn 91.143.176.0/20/24s
GTT - EMEA Ltd.
1,02425%
4

Lineage

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

91.143.176.0/20

From the registry to its use

  1. Nov 2, 2006
    Registry record
    GTT - EMEA Ltd.
    ALLOCATED PA
    91.143.176.0/20
  2. Nov 8, 2006– Aug 14, 2023
    Announced
    AS8844 GTT - EMEA Ltd.
  3. Aug 3, 2023– today
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  4. Aug 9, 2023
    Route object
    AS3257 GTT Communications Inc.
    RIPE route object for AS3257 GTT Communications Inc., maintainer AS3257-ROUTE-MNT AS8190-MNT
  5. Aug 9, 2023
    Route object
    AS8844 GTT - EMEA Ltd.
    RIPE route object for AS8844 GTT - EMEA Ltd., maintainer AS3257-ROUTE-MNT AS8190-MNT
  6. Apr 29, 2026
    Route object
    AS3257 GTT Communications Inc.
    RIPE route object for AS3257 GTT Communications Inc., maintainer AS3257-ROUTE-MNT
    91.143.182.0/23
  7. Apr 29, 2026
    Route object
    AS3257 GTT Communications Inc.
    RIPE route object for AS3257 GTT Communications Inc., maintainer AS3257-ROUTE-MNT
    91.143.184.0/21
  8. Jun 19, 2026
    Route object
    IPXO
    RADB route object for AS834 IPXO LLC, maintainer MAINT-AS834
    91.143.182.0/23
  9. Oct 8, 2026
    Route object
    IPXO
    RADB route object for AS30042 Boerboel LLC, maintainer MAINT-AS834
    91.143.184.0/21
  10. today
    Leased from
    IPXO
    IP broker
  11. today
    Used
    Ashburn Proxies
    Proxy seller

Announcements

More specific

Announcements inside

PrefixOriginTypeOperatorLeased fromHolderRPKI
91.143.176.0/22
since Aug 2026
AS54004ISP proxyProxy providersoperated by Ashburn ProxiesIP broker IPXOGTT - EMEA Ltd.
via Exo Broadband
91.143.180.0/24
since Oct 5, 2026
AS402133HostingIP broker IPXOGTT - EMEA Ltd.
91.143.189.0/24
since Sep 28, 2026
AS30042HostingIP broker IPXOGTT - EMEA Ltd.
via Internet Utilities Europe and Asia 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
91.143.176.0/204,096UK-EASYNET-20061102GTT - EMEA Ltd. (ORG-EA49-RIPE) · GBALLOCATED PANov 2, 2006abuse@gtt.net
└ 91.143.176.0/221,024Exo-BroadbandExo Broadband (ORG-EB151-RIPE) · USSUB-ALLOCATED PAApr 29, 2026report@abuseradar.com
└ 91.143.180.0/24256NET-91-143-180-0-24unknownSUB-ALLOCATED PAApr 29, 2026report@abuseradar.com
└ 91.143.181.0/24256COMMUNITY-CUST-OXINOxford InnovationASSIGNED PAJun 21, 2007abuse@gtt.net
via UK-EASYNET-20061102
└ 91.143.182.0/23512IPXO-GTTGTT - EMEA Ltd. (ORG-EA49-RIPE) · GBSUB-ALLOCATED PAApr 29, 2026abuse@gtt.net
└ 91.143.184.0/212,048IPXO-GTTInternet Utilities Europe and Asia Limited (ORG-IL687-RIPE) · GBSUB-ALLOCATED PAApr 29, 2026report@abuseradar.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

4,096 addresses
TypeAddressesShareRanges
Internet provider2,04850%3
ISP proxyanonymizer1,53638%2
Hosting51213%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