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Data as of Nov 7, 2026

64.81.172.0/23

Anonymizer · ISP proxy

Korea Telecom · space held by GTT Americas, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS4766
Type
ISP proxy
IPv4 market

Path

1 · Holder
GTT Americas, LLC
record created Apr 28, 2000 · reallocated to Internet Utilities NA LLC Jul 22, 2025
2 · Leased from
IPXO
for its owner GTT Americas, LLC
3 · Announced by
AS4766 Korea Telecom
since Aug 2025 · 14 mo ago
4 · Use
Proxy providersnamed FlashProxy
ISP proxy

Operators, sellers and brokers

Proxy providers

NameParentIn 64.81.172.0/23/24s
FlashProxy
25650%
1
Leased from

IP brokers

NameIn 64.81.172.0/23/24s
IPXO
512100%
2
Leased from

Owners leasing their own space

NameIn 64.81.172.0/23/24s
GTT Americas, LLC
512100%
2

Lineage

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

64.81.172.0/23

From the registry to its use

  1. Apr 28, 2000
    Registry record
    GTT Americas, LLC
    Direct Allocation
    64.81.0.0/16
  2. May 9, 2005– Jun 8, 2016
    Announced
    AS23504 GTT Americas, LLC
    as part of 64.81.0.0/16
    64.81.0.0/16
  3. Jun 15, 2016– May 15, 2022
    Announced
    AS18566 GTT Americas, LLC
    as part of 64.81.0.0/16
    64.81.0.0/16
  4. Apr 29, 2023– today
    Announced
    AS3257 GTT Communications Inc.
    as part of 64.81.0.0/16
    64.81.0.0/16
  5. Jul 22, 2025
    Reallocated
    Internet Utilities NA LLC
    Reallocated
    64.81.160.0/19
  6. Aug 21, 2025
    Route object
    IPXO
    RADB route object for AS4766 Korea Telecom, maintainer MAINT-AS834
  7. Aug 21, 2025
    Route object
    IPXO
    ARIN route object for AS4766 Korea Telecom, maintainer MNT-DCL-577
  8. Aug 28, 2025
    Route object
    IPXO
    RADB route object for AS16589 Wired Tech LLC, maintainer MAINT-AS834
  9. Aug 28, 2025
    Route object
    IPXO
    ARIN route object for AS16589 Wired Tech LLC, maintainer MNT-DCL-577
  10. Aug 28, 2025– today
    Announced
    AS4766 Korea Telecom
    Internet provider
  11. Apr 24, 2026
    Route object
    IPXO
    RADB route object for AS6079 RCN, maintainer MAINT-AS834
  12. Apr 24, 2026
    Route object
    IPXO
    ARIN route object for AS6079 RCN, maintainer MNT-DCL-577
  13. Apr 30, 2026
    Route object
    IPXO
    RADB route object for AS399955 B-Rock Crude, maintainer MAINT-AS834
  14. Apr 30, 2026
    Route object
    IPXO
    ARIN route object for AS399955 B-Rock Crude, maintainer MNT-DCL-577
  15. today
    Leased from
    IPXO
    IP broker
  16. today
    Used
    FlashProxy
    Proxy seller

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
64.81.0.0/16
since Apr 2023
AS3257Internet providerIP broker IPXO (part)289
71 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
64.81.0.0/1665,536MEGAPATH-BLK-50GTT Americas, LLC (GAL-104) · USDirect AllocationApr 28, 2000abuse@gtt.net
└ 64.81.160.0/198,192IPXO-GTTIPXO LLC (IL-845) · USReallocatedJul 18, 2025abuse@ipxo.com
└ 64.81.160.0/198,192NETUTILSInternet Utilities NA LLC (DCL-577) · USReallocatedJul 22, 2025report@abuseradar.com

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
GTT Americas, LLC
Handle
GAL-104
Range
64.81.0.0/16
Registration type
Direct Allocation
Record created
Apr 28, 2000
Reallocated to
Internet Utilities NA LLC (DCL-577)
Reallocated range
64.81.160.0/19
Reallocated
Jul 22, 2025
Origin network

AS4766

KR
Name
Korea Telecom
Type
Internet provider
Registered
Apr 22, 1996
Domain
kt.com
Website
www.kt.com/eng/main.jsp
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1