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Data as of Nov 7, 2026

139.171.76.0/24

Anonymizer · ISP proxy

RCN · space held by Cimage Corporation

Announcement
this exact prefix
No RPKI
Announced by
AS6079
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Sep 2026
from AS10753 Level 3 Parent, LLC, after 3 years unannounced
IPv4 market

Path

Announced by AS6079 since Sep 2026 · 7 wk ago
1 · Holder
Cimage Corporation
record created Mar 25, 1990
2 · Leased from
Rackdog
for its owner Cimage Corporation
3 · Announced by
AS6079 RCN
since Sep 2026 · 7 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 139.171.76.0/24/24s
Rackdog
256100%
1
Leased from

Owners leasing their own space

NameIn 139.171.76.0/24/24s
Cimage Corporation
256100%
1

Lineage

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

139.171.76.0/24

From the registry to its use

  1. Mar 25, 1990
    Registry record
    Cimage Corporation
    Direct Allocation (legacy, pre-1997)
    139.171.0.0/16
  2. Sep 20, 2023– Oct 1, 2023
    Announced
    AS10753 Level 3 Parent, LLC
    Internet provider
  3. Sep 4, 2026
    Route object
    AS6079 RCN
    ALTDB route object for AS6079 RCN, maintainer MAINT-AS2015
  4. Sep 4, 2026
    Route object
    AS7843 Charter Communications Inc
    ALTDB route object for AS7843 Charter Communications Inc, maintainer MAINT-AS2015
  5. Sep 4, 2026
    Route object
    AS22773 Cox Communications Inc.
    ALTDB route object for AS22773 Cox Communications Inc., maintainer MAINT-AS2015
  6. Sep 16, 2026– today
    Announced
    AS6079 RCN
    Internet provider
  7. today
    Leased from
    Rackdog
    IP broker

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS6079

US
Name
RCN
Type
Internet provider
Registered
Apr 4, 2001
Domain
astound.com
Website
www.astound.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed