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Data as of Nov 14, 2026

121.91.240.0/24

1 residential-proxy exit · 30 days

Rackdog, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS398465
Type
Hosting
Risk
50 / 100 · Medium

Residential-proxy exits

Proxy exits
1
0.39% of its addresses · 30 days
Oct 15, 2026 – Nov 13, 2026

Exits seen per day

12K observations
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 Mar 2026 · 8 mo ago
4 · Use
Hosting

Lineage

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

121.91.240.0/24

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. Nov 8, 2025– Mar 31, 2026
    Announced
    AS7029 Windstream Communications LLC
    Internet provider
  4. Mar 20, 2026– today
    Announced
    AS398465 Rackdog, LLC
    Hosting
  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
Rotating
First seen
Nov 2025
Current origin since
Mar 2026 · 8 mo
Origin networks
2
Last change of origin
Mar 2026
Recorded history

History

Handoffs
1