LAYER3 INTEL
Get started
Sign in
Data as of Nov 11, 2026

121.91.239.0/24

Anonymizer · Datacenter proxy

Rackdog, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS398465
Type
Datacenter proxy
Risk
85 / 100 · Critical
IPv4 market

Path

1 · Holder
Rackdog, LLC
record created Dec 21, 2020 · reallocated to Cable & Fiberlink Sep 18, 2023
2 · Leased from
Rackdog
3 · Announced by
AS398465 Rackdog, LLC
since Sep 2025 · 14 mo ago
4 · Use
Datacenter proxy
anonymizer space, operator not named

Lineage

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

121.91.239.0/24

From the registry to its use

  1. Dec 21, 2020
    Registry record
    Rackdog, LLC
    Direct Allocation
    121.91.208.0 - 121.91.255.255
  2. Sep 18, 2023
    Reallocated
    Cable & Fiberlink
    Reallocated
    121.91.224.0/19
  3. Sep 9, 2025– today
    Announced
    AS398465 Rackdog, LLC
    Hosting
  4. Nov 16, 2025
    Route object
    Rackdog
    RADB route object for AS6079 RCN, maintainer MAINT-AS398465
  5. today
    Leased from
    Rackdog
    IP broker

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
121.91.208.0 - 121.91.255.25512,288NET-121-91-208-0Rackdog, LLC (RL-859) · USDirect AllocationDec 21, 2020contact@rackdog.com
└ 121.91.224.0/198,192RACKDOGCable & Fiberlink (MIL-167) · USReallocatedSep 18, 2023ipoperations@cablefiberlink.com

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern
Stable
First seen
Sep 2025
Current origin since
Sep 2025 · 1.2 yr
Origin networks
1