Data as of Nov 8, 2026
204.217.128.0/17
32,256 anonymizer addresses · 98%8 residential-proxy exits · 30 daysCogent Communications, LLC
Residential-proxy exits
Proxy exits
8
0.02% of its addresses · 30 days
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
17 observations
IPv4 market
Path
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 204.217.128.0/17 | /24s |
|---|---|---|---|
| Oxylabs | Tesonet | 7,16822% | 28 |
| PrivateProxy | 1,0243.1% | 4 | |
| ProxyBonanza | 5121.6% | 2 |
Leased from
IP brokers
| Name | In 204.217.128.0/17 | /24s |
|---|---|---|
| Aventice | 32,25698% | 126 |
Leased from
Owners leasing their own space
| Name | In 204.217.128.0/17 | /24s |
|---|---|---|
| Cogent Communications, LLC | 26,88082% | 105 |
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Operator | Leased from | Holder | RPKI |
|---|---|---|---|---|---|---|
| 204.217.128.0/22 since Nov 2021 | AS11572 | Datacenter proxy | Proxy providerssold by PrivateProxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.132.0/24 since Jul 2022 | AS35758 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.133.0/24 since Sep 2022 | AS136988 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.134.0/24 since Sep 2023 | AS212238 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.135.0/24 since Mar 2023 | AS11426 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Charter Communications Inc | ||
| 204.217.136.0/24 since Nov 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.137.0/24 since Nov 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.139.0/24 since Nov 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.140.0/24 since Nov 2021 | AS19437 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.141.0/24 since Nov 2021 | AS46261 | Datacenter proxy | Proxy providerssold by ProxyBonanza | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.142.0/24 since Nov 2022 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.143.0/24 since Nov 2022 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.144.0/24 since Mar 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Cyberzone S.A | ||
| 204.217.145.0/24 since Mar 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.146.0/24 since Mar 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.147.0/24 since Mar 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.148.0/23 since Nov 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.150.0/23 since Nov 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.152.0/24 since Jul 2025 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.153.0/24 since Jul 2025 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.154.0/23 since Mar 2024 | AS133752 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via H4Y Technologies LLC | ||
| 204.217.156.0/24 since Feb 2025 | AS35758 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.157.0/24 since Feb 2025 | AS35758 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.158.0/24 since Mar 2024 | AS397373 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via H4Y Technologies LLC | ||
| 204.217.159.0/24 since May 2024 | AS28753 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.160.0/23 since Oct 2024 | AS28753 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.162.0/24 since Feb 2025 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.163.0/24 since Oct 2024 | AS20853 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.168.0/21 since Nov 2021 | AS262287 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.177.0/24 since Aug 2023 | AS212238 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.178.0/24 since Jan 2023 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.179.0/24 since Sep 2023 | AS262287 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.184.0/22 since Nov 2021 | AS46261 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.188.0/23 since Nov 2021 | AS46261 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.190.0/24 since Nov 2021 | AS19437 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.191.0/24 since Nov 2021 | AS46261 | Datacenter proxy | Proxy providerssold by ProxyBonanza | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.192.0/24 since May 2023 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.193.0/24 since Aug 2023 | AS212238 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.194.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.195.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.198.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.199.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.202.0/23 since Jan 2023 | AS11325 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.204.0/23 since Jan 2023 | AS11325 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.206.0/24 since Nov 2021 | AS46261 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.207.0/24 since Sep 2024 | AS212238 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.208.0/24 since Aug 2023 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.209.0/24 since Nov 2023 | AS212238 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.210.0/24 since Aug 2022 | AS134351 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.211.0/24 since Dec 2021 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.212.0/24 since Mar 2023 | AS9009 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.214.0/24 since Mar 2022 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.215.0/24 since Mar 2022 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.216.0/24 since Jan 2023 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.217.0/24 since Jan 2023 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.218.0/24 since Dec 2025 | AS396356 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.220.0/24 since May 2024 | AS212238 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.224.0/23 since Oct 2022 | AS9009 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.226.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.227.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.228.0/22 since Nov 2021 | AS46261 | Hosting | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.228.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.229.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.230.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.231.0/24 since May 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.232.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.234.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.235.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.236.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.237.0/24 since May 2024 | AS5511 | ISP proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.238.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.239.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.240.0/22 since Nov 2025 | AS9009 | Hosting | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.241.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.242.0/24 since Apr 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.243.0/24 since May 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.244.0/24 since May 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.245.0/24 since Feb 2024 | AS46261 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.247.0/24 since Feb 2024 | AS9009 | Datacenter proxy | Proxy providerssold by Oxylabs | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | |
| 204.217.248.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.249.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.250.0/24 since Jun 2023 | AS5650 | ISP proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.252.0/22 since Dec 2025 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.252.0/23 since May 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC | ||
| 204.217.254.0/23 since May 2024 | AS9009 | Datacenter proxy | IP broker Aventice | Cogent Communications, LLC via Aventice LLC |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.217.0.0/16 | 65,536 | COGENT-204-217-16 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Dec 29, 1994 | abuse@ |
| └ 204.217.128.0/17 | 32,768 | NET-204-217-128-0-1 | Aventice LLC (AL-584) · US | Reallocated | Nov 26, 2021 | abuse@ |
| └ 204.217.135.0/24 | 256 | CHARTER | Charter Communications Inc (CC-3517) · US | Reallocated | Mar 17, 2023 | abuse@ |
| └ 204.217.144.0/24 | 256 | CYBER | Cyberzone S.A (CS-2833) · PA | Reallocated | Mar 14, 2024 | abuses@ |
| └ 204.217.154.0/23 | 512 | HTL-33 | H4Y Technologies LLC (HTL-33) · US | Reallocated | Feb 23, 2024 | abuse@ |
| └ 204.217.158.0/24 | 256 | HTL-33 | H4Y Technologies LLC (HTL-33) · US | Reallocated | Feb 23, 2024 | abuse@ |
| └ 204.217.192.0/24 | 256 | WIFIBER-IKE | Wifiber IKE (C09246107) · US | Reassigned | Feb 22, 2023 | abuse@ via NET-204-217-128-0-1 |
| └ 204.217.193.0/24 | 256 | WIFIBER-IKE | Wifiber IKE (C09649131) · US | Reassigned | Jun 12, 2023 | abuse@ via NET-204-217-128-0-1 |
| └ 204.217.208.0/24 | 256 | PNV-LIMITED | PNV Limited (C09933878) · GB | Reassigned | Aug 5, 2023 | abuse@ via NET-204-217-128-0-1 |
| └ 204.217.209.0/24 | 256 | SPRINT | Aventice (C09695317) · GB | Reassigned | Jun 21, 2023 | abuse@ via NET-204-217-128-0-1 |
| └ 204.217.212.0/24 | 256 | WIFIBER-IKE | Wifiber IKE (C09246545) · US | Reassigned | Feb 22, 2023 | abuse@ via NET-204-217-128-0-1 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
32,768 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Datacenter proxyanonymizer | 22,528 | 69% | 68 | |
| ISP proxyanonymizer | 9,728 | 30% | 31 | |
| Hosting | 256 | 0.78% | 1 | |
| Internet provider | 256 | 0.78% | 1 |
Network & registry
Announced by
Covering announcement 204.217.0.0/16
- Prefix
- 204.217.0.0/16
- Announced by
- AS174 Cogent Communications, LLC
- Type
- Internet provider
- Anonymizer addresses
- 5,376 addresses · 8.2%ISP proxy
- Leased from
- IP broker Aventice (part)
- RPKI
- No RPKI
- Netname
- COGENT-204-217-16
- Registrant
- Cogent Communications, LLC
- RIR
- ARIN
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 204.217.0.0/16
204.217.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 204.217.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS174 | RADB | Cogent | MAINT-AS174 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
217. 0. 0/ 16 - Netname
- COGENT-204-217-16
- Registrant
- Cogent Communications, LLC
- Organization
- Cogent Communications, LLC (COGC)
- Org address
- 2450 N Street NW, Washington, DC, 20037
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-204-217-0-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Dec 29, 1994
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 29, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN