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Data as of Nov 3, 2026

52.128.192.0/22

Anonymizer · ISP proxy

Cogent Communications, LLC · space held by Hostzors Inc.

Announcement
this exact prefix
RPKI valid
Announced by
AS174
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Oct 4, 2026
from AS1299 Arelion Sweden AB
IPv4 market

Path

Announced by AS174 since Oct 4, 2026 · 4 wk ago
1 · Holder
Hostzors Inc.
record created Jun 10, 2016 · reallocated to ispexchangecorp Sep 24, 2021
2 · Leased from
Hostzors Inc.
its owner, directly
3 · Announced by
AS174 Cogent Communications, LLC
since Oct 4, 2026 · 4 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

Owners leasing their own space

NameIn 52.128.192.0/22/24s
Hostzors Inc.
1,024100%
4

Lineage

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

52.128.192.0/22

From the registry to its use

  1. Jun 10, 2016
    Registry record
    Hostzors Inc.
    Direct Allocation
    52.128.160.0 - 52.128.223.255
  2. Sep 18, 2021– Sep 25, 2024
    Announced
    AS399150 ispexchangecorp
    Hosting
  3. Sep 24, 2021
    Reallocated
    ispexchangecorp
    Reallocated
    52.128.192.0/22
  4. Sep 24, 2021
    Route object
    AS399150 ispexchangecorp
    ARIN route object for AS399150 ispexchangecorp, maintainer MNT-HOSTZ-1
  5. Sep 14, 2024– Aug 27, 2025
    Announced
    AS7018 AT&T Enterprises, LLC
    Internet provider
  6. Sep 20, 2024
    Route object
    AS7018 AT&T Enterprises, LLC
    ARIN route object for AS7018 AT&T Enterprises, LLC, maintainer MNT-HOSTZ-1
  7. Aug 28, 2025– Aug 10, 2026
    Announced
    AS33659 Comcast Cable Communications, LLC
    Internet provider
  8. Jul 30, 2026– Oct 3, 2026
    Announced
    AS1299 Arelion Sweden AB
    Internet provider
  9. Aug 4, 2026
    Route object
    AS1299 Arelion Sweden AB
    ARIN route object for AS1299 Arelion Sweden AB, maintainer MNT-HOSTZ-1
  10. Oct 4, 2026– Nov 2, 2026
    Announced
    AS174 Cogent Communications, LLC
    Internet provider

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
52.128.160.0 - 52.128.223.25516,384HOSTZ-1Hostzors Inc. (HOSTZ-1) · USDirect AllocationJun 10, 2016[email protected]
└ 52.128.192.0/221,024ISPEXCHANGECORPispexchangecorp (IC-1621) · USReallocatedSep 24, 2021[email protected]
└ 52.128.192.0/221,024ASHBURNAshburn (C10903455) · USReassignedJul 17, 2024[email protected]
via ISPEXCHANGECORP

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
Hostzors Inc.
Handle
HOSTZ-1
Range
52.128.160.0 - 52.128.223.255
Registration type
Direct Allocation
Record created
Jun 10, 2016
Reallocated to
ispexchangecorp (IC-1621)
Reallocated range
52.128.192.0/22
Reallocated
Sep 24, 2021
Origin network

AS174

US
Name
Cogent Communications, LLC
Type
Internet provider
Registered
May 16, 1996
Domain
cogentco.com
Website
www.cogentco.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1,658