Data as of Nov 7, 2026
52.128.220.0/22
Anonymizer · ISP proxyCogent Communications, LLC · space held by Hostzors Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Jul 2026
from AS33659 Comcast Cable Communications, LLC
IPv4 market
Path
Announced by AS174 since Jul 2026 · 3 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 52.128.220.0/22 | /24s |
|---|---|---|
| Hostzors Inc. | 1,024100% | 4 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
52.128.220.0/22
From the registry to its use
- Jun 10, 2016Registry recordHostzors Inc.Direct Allocation52.128.160.0 - 52.128.223.255
- Sep 18, 2021– Sep 25, 2024
- Sep 24, 2021ReallocatedispexchangecorpReallocated52.128.220.0/22
- Sep 24, 2021Route objectAS399150 ispexchangecorpARIN route object for AS399150 ispexchangecorp, maintainer MNT-HOSTZ-1
- Sep 14, 2024– Aug 27, 2025
- Sep 20, 2024Route objectAS7018 AT&T Enterprises, LLCARIN route object for AS7018 AT&T Enterprises, LLC, maintainer MNT-HOSTZ-1
- Aug 28, 2025– Aug 10, 2026
- Jul 29, 2026Route objectAS174 Cogent Communications, LLCARIN route object for AS174 Cogent Communications, LLC, maintainer MNT-HOSTZ-1
- Jul 30, 2026– today
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.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 52. | 16,384 | HOSTZ-1 | Hostzors Inc. (HOSTZ-1) · US | Direct Allocation | Jun 10, 2016 | jamie@ |
| └ 52.128.220.0/22 | 1,024 | ISPEXCHANGECORP | ispexchangecorp (IC-1621) · US | Reallocated | Sep 24, 2021 | abuse@ |
| └ 52.128.220.0/22 | 1,024 | CHICAGO | Chicago (C10903464) · US | Reassigned | Jul 17, 2024 | abuse@ 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
IPv4 market
Holder
- 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. 220. 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
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Sep 2021
- Current origin since
- Jul 2026 · 3 mo
- Origin networks
- 4
- Last change of origin
- Jul 2026
Recorded history
History
- Handoffs
- 3
RPKI
Route origin authorizations
Whois
Registration for this announcement
- Range
- 52.
128. 220. 0/ 22 - Netname
- CHICAGO
- Registrant
- Chicago
- Organization
- Chicago (C10903464)
- Type
- Reassigned
- Handle
- NET-52-128-220-0-2
- Parent
- NET-52-128-220-0-1
- Created
- Jul 17, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- Jun 10, 2016
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ispexchangecorp. com - Name
- Abuse Desk
- Phone
- +1-201-701-6745
- Handle
- ABUSE8055-ARIN