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Data as of Nov 3, 2026

199.160.136.0/21

Anonymizer · ISP proxy

Cox Communications Inc. · space held by Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS22773
Type
ISP proxy
Risk
90 / 100 · Critical
Recent change
New origin Sep 28, 2026
its first announcement on record
IPv4 market

Path

Announced by AS22773 since Sep 28, 2026 · 5 wk ago
1 · Holder
Cogent Communications, LLC
record created Feb 1, 1994
2 · Leased from
Rackdog
for its owner Cogent Communications, LLC
3 · Announced by
AS22773 Cox Communications Inc.
since Sep 28, 2026 · 5 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 199.160.136.0/21/24s
Rackdog
2,048100%
8
Leased from

Owners leasing their own space

NameIn 199.160.136.0/21/24s
Cogent Communications, LLC
2,048100%
8

Lineage

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

199.160.136.0/21

From the registry to its use

  1. Feb 1, 1994
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    199.160.0.0/14
  2. May 27, 2026
    Assigned
    RCN
    Reassigned
    199.160.128.0/17
  3. Sep 28, 2026– Nov 2, 2026
    Announced
    AS22773 Cox Communications Inc.
    as part of 199.160.128.0/17
    199.160.128.0/17
  4. Sep 28, 2026– Nov 2, 2026
    Announced
    AS22773 Cox Communications Inc.
    Internet provider
  5. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesLeased fromHolderRPKI
199.160.128.0/17
since Sep 28, 2026
AS22773ISP proxy16,38450%IP broker RackdogCogent 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
199.160.0.0/14262,144COGENT-199-160-0Cogent Communications, LLC (COGC) · USDirect AllocationFeb 1, 1994[email protected]
└ 199.160.128.0/1732,768RACKDOG-CGNT-NET-23RCN (C11605217) · USReassignedMay 27, 2026[email protected]
via COGENT-199-160-0

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 historyWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
199.160.0.0/14
Registration type
Direct Allocation
Record created
Feb 1, 1994
Legacy
yes
Origin network

AS22773

US
Name
Cox Communications Inc.
Type
Internet provider
Registered
Nov 20, 2001
Domain
cox.com
Website
www.cox.com/peering
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed