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Data as of Nov 3, 2026

205.246.64.0/20

Anonymizer · ISP proxy

RCN · space held by Cogent Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS6079
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
Cogent Communications, LLC
record created Apr 24, 1995
2 · Leased from
Rackdog
for its owner Cogent Communications, LLC
3 · Announced by
AS6079 RCN
since Aug 2025 · 15 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 205.246.64.0/20/24s
Rackdog
4,096100%
16
Leased from

Owners leasing their own space

NameIn 205.246.64.0/20/24s
Cogent Communications, LLC
4,096100%
16

Lineage

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

205.246.64.0/20

From the registry to its use

  1. Apr 24, 1995
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    205.240.0.0/13
  2. Aug 16, 2025– Nov 2, 2026
    Announced
    AS6079 RCN
    Internet provider
  3. Aug 26, 2025
    Route object
    Rackdog
    RADB route object for AS6079 RCN, maintainer MAINT-AS398465
  4. May 27, 2026
    Assigned
    RCN
    Reassigned
    205.246.64.0/18
  5. Sep 18, 2026– Nov 2, 2026
    Announced
    AS174 Cogent Communications, LLC
    as part of 205.240.0.0/13
    205.240.0.0/13
  6. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesProxy exitsHolderRPKI
205.240.0.0/13AS174Internet provider28,6725.5%ISP proxy30
3 always on
Cogent Communications, 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
205.240.0.0/13524,288COGENT-205-240-0Cogent Communications, LLC (COGC) · USDirect AllocationApr 24, 1995[email protected]
└ 205.246.64.0/1816,384RACKDOG-CGNT-NET-41RCN (C11605236) · USReassignedMay 27, 2026[email protected]
via COGENT-205-240-0

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
Cogent Communications, LLC
Handle
COGC
Range
205.240.0.0/13
Registration type
Direct Allocation
Record created
Apr 24, 1995
Legacy
yes
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