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Data as of Nov 4, 2026

74.1.24.0/23

Anonymizer · ISP proxy

Comcast Cable Communications, LLC · space held by GTT Americas, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS33651
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Sep 2026
from AS174 Cogent Communications, LLC
IPv4 market

Path

Announced by AS33651 since Sep 2026 · 9 wk ago
1 · Holder
GTT Americas, LLC
record created Dec 20, 2005 · reallocated to Internet Utilities NA LLC Oct 10, 2025
2 · Leased from
IPXO
for its owner GTT Americas, LLC
3 · Announced by
AS33651 Comcast Cable Communications, LLC
since Sep 2026 · 9 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 74.1.24.0/23/24s
IPXO
512100%
2
Leased from

Owners leasing their own space

NameIn 74.1.24.0/23/24s
GTT Americas, LLC
512100%
2

Lineage

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

74.1.24.0/23

From the registry to its use

  1. Dec 20, 2005
    Registry record
    GTT Americas, LLC
    Direct Allocation
    74.0.0.0 - 74.3.127.255
  2. Jan 8, 2006– May 15, 2022
    Announced
    AS18566 GTT Americas, LLC
    as part of 74.0.0.0/15
    74.0.0.0/15
  3. Apr 29, 2023– today
    Announced
    AS3257 GTT Communications Inc.
    as part of 74.0.0.0/15
    74.0.0.0/15
  4. Oct 10, 2025
    Reallocated
    Internet Utilities NA LLC
    Reallocated
    74.1.0.0/16
  5. Oct 27, 2025– Dec 25, 2025
    Announced
    AS174 Cogent Communications, LLC
    Internet provider
  6. Aug 25, 2026
    Assigned
    SkyQuantum Internet Service LLC
    Reassigned
    74.1.24.0/23
  7. Aug 25, 2026
    Route object
    AS33651 Comcast Cable Communications, LLC
    ARIN route object for AS33651 Comcast Cable Communications, LLC, maintainer MNT-GAL-104
  8. Aug 25, 2026
    Route object
    IPXO
    RADB route object for AS33651 Comcast Cable Communications, LLC, maintainer MAINT-AS834
  9. Aug 25, 2026
    Route object
    AS33667 Comcast Cable Communications, LLC
    ARIN route object for AS33667 Comcast Cable Communications, LLC, maintainer MNT-GAL-104
  10. Aug 25, 2026
    Route object
    IPXO
    RADB route object for AS33667 Comcast Cable Communications, LLC, maintainer MAINT-AS834
  11. Aug 25, 2026
    Route object
    AS55201 SkyQuantum Internet Service
    ARIN route object for AS55201 SkyQuantum Internet Service, maintainer MNT-GAL-104
  12. Aug 25, 2026
    Route object
    IPXO
    RADB route object for AS55201 SkyQuantum Internet Service, maintainer MAINT-AS834
  13. Sep 4, 2026– today
    Announced
    AS33651 Comcast Cable Communications, LLC
    Internet provider
  14. today
    Leased from
    IPXO
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
74.0.0.0/15
since Apr 2023
AS3257Internet providerIP broker IPXO (part)160
56 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
74.0.0.0 - 74.3.127.255229,376MEGAPATH-BLK-64-65-66GTT Americas, LLC (GAL-104) · USDirect AllocationDec 20, 2005abuse@gtt.net
└ 74.1.0.0/1665,536IPXO-LLCIPXO LLC (IL-845) · USReallocatedOct 6, 2025abuse@ipxo.com
└ 74.1.0.0/1665,536NETUTILSInternet Utilities NA LLC (DCL-577) · USReallocatedOct 10, 2025report@abuseradar.com
└ 74.1.24.0/23512NET-74-1-24-0-23SkyQuantum Internet Service LLC (C11690202) · USReassignedAug 25, 2026report@abuseradar.com
via IPXO-LLC

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
GTT Americas, LLC
Handle
GAL-104
Range
74.0.0.0 - 74.3.127.255
Registration type
Direct Allocation
Record created
Dec 20, 2005
Reallocated to
Internet Utilities NA LLC (DCL-577)
Reallocated range
74.1.0.0/16
Reallocated
Oct 10, 2025
Origin network

AS33651

US
Name
Comcast Cable Communications, LLC
Type
Internet provider
Registered
Feb 16, 2005
Domain
comcast.com
Website
corporate.comcast.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed