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Data as of Nov 3, 2026

204.97.96.0/21

Anonymizer · ISP proxy

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

Announcement
this exact prefix
No RPKI
Announced by
AS3257
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Jul 13, 1994 · reallocated to I-2000, Inc. Oct 4, 1994
2 · Leased from
Cogent Communications, LLC
its owner, directly
3 · Announced by
AS3257 GTT Communications Inc.
since Nov 2019 · 7.0 yr ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

Owners leasing their own space

NameIn 204.97.96.0/21/24s
Cogent Communications, LLC
2,048100%
8

Lineage

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

204.97.96.0/21

From the registry to its use

  1. Jul 13, 1994
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    204.94.0.0 - 204.97.255.255
  2. Oct 4, 1994
    Reallocated
    I-2000, Inc.
    Reallocated
    204.97.96.0/21
  3. May 9, 2005– May 16, 2024
    Announced
    AS1239 Cogent Communications, LLC
    as part of 204.96.0.0/15
    204.96.0.0/15
  4. May 9, 2005– Nov 27, 2019
    Announced
    AS6459 I-2000, Inc.
  5. Nov 14, 2019
    Route object
    AS3257 GTT Communications Inc.
    RADB route object for AS3257 GTT Communications Inc., maintainer MAINT-AS3257
  6. Nov 16, 2019– Nov 2, 2026
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  7. May 5, 2024– Nov 2, 2026
    Announced
    AS174 Cogent Communications, LLC
    as part of 204.96.0.0/15
    204.96.0.0/15

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
204.96.0.0/15
since May 2024
AS174Internet provider1Cogent Communications, 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
204.94.0.0 - 204.97.255.255262,144COGCCogent Communications, LLC (COGC) · USDirect AllocationJul 13, 1994[email protected]
└ 204.97.96.0/212,048SPRINT-CC6167I-2000, Inc. (I2I) · USReallocatedOct 4, 1994[email protected]
└ 204.97.96.0/24256CYDS-NETCygne Designs, Inc. (C00007779) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.97.0/24256I2000-NET2I-2000, Inc (C00007780) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.98.0/24256NEWSTALK-NETThe Talk Channel (C00007781) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.99.0/24256I2000-NET7I-2000, Inc. (C00007792) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.100.0/24256UNDERNET-NETJarad Broadcasting (C00007782) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.101.0/24256EMNET-NETEd McGinley (EDMCGI) · USReassignedJan 24, 1996[email protected]
└ 204.97.102.0/24256I2000-NET3I-2000, Inc. (C00007783) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167
└ 204.97.103.0/24256PECONIC-NETPeconic On-Line (C00007784) · USReassignedJan 24, 1996[email protected]
via SPRINT-CC6167

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

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
204.94.0.0 - 204.97.255.255
Registration type
Direct Allocation
Record created
Jul 13, 1994
Legacy
yes
Reallocated to
I-2000, Inc. (I2I)
Reallocated range
204.97.96.0/21
Reallocated
Oct 4, 1994
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