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Data as of Nov 9, 2026

38.15.21.0/24

Anonymizer · Datacenter proxy

SparkTech LTD · space held by Cogent Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS215595
Type
Datacenter proxy
Risk
85 / 100 · Critical
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Apr 16, 1991
2 · Leased from
Cogent Communications, LLC
its owner, directly
3 · Announced by
AS215595 SparkTech LTD
since Oct 2024 · 2.1 yr ago
4 · Use
Datacenter proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

Owners leasing their own space

NameIn 38.15.21.0/24/24s
Cogent Communications, LLC
256100%
1

Lineage

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

38.15.21.0/24

From the registry to its use

  1. Apr 16, 1991
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    38.0.0.0/8
  2. Oct 20, 2024– today
    Announced
    AS215595 SparkTech LTD
    Hosting
  3. Oct 26, 2024
    Route object
    AS215595 SparkTech LTD
    RADB route object for AS215595 SparkTech LTD, maintainer MAINT-NEAROUTE
  4. Sep 18, 2026– today
    Announced
    AS174 Cogent Communications, LLC
    as part of 38.0.0.0/8
    38.0.0.0/8

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesOperatorLeased fromProxy exitsHolderRPKI
38.0.0.0/8AS174Internet provider62,4700.37%ISP proxy, Datacenter proxy, VPNProxy providerssold by Oxylabs, QuarkIP, HypeProxy, Novada, MyPrivateProxyVPN servicesoperated by Windscribe, VPN GateIP broker Rackdog (part)401,849
78,907 always on
Cogent Communications, LLC

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS215595

US
Name
SparkTech LTD
Type
Hosting
Registered
Feb 1, 2024
Domain
sparktechltd.com
Spamhaus ASN-DROP
not listed