Data as of Nov 6, 2026
37.128.181.0/24
2 residential-proxy exits · 30 daysCKW Fiber Services AG
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Always-on exits
1
50% of its exits
Providers
14
selling exits here
Oct 7, 2026 – Nov 5, 2026
Exits seen per day
1.1K observations
Proxy providers listing exits
- BlurPath
- CliProxy
- DataImpulse
- GloryCloud
- IPFly
- IPPeak
- LemonBright
- MoMoProxy
- NovProxy
- Proxmint
- Proxy4U
- PuraRoute
- Q2IP
- Thordata
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 |
|---|---|---|---|---|---|---|
| 37.128.176.0/21 | 2,048 | CH-CFS-20120220 | CKW Fiber Services AG (ORG-CFSA1-RIPE) · CH | ALLOCATED PA | Feb 20, 2012 | abuse@ |
| └ 37.128.181.0/25 | 128 | BWO-Internet | BWO Systems AG | ASSIGNED PA | Nov 25, 2014 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.128/28 | 16 | BWO2-Internet | BWO Schenkon | ASSIGNED PA | Apr 2, 2015 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.144/28 | 16 | StadtverwaltungSursee-Internet | unknown | ASSIGNED PA | Apr 28, 2016 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.168/29 | 8 | Renergia-INTERNET | unknown | ASSIGNED PA | Aug 20, 2019 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.188/30 | 4 | INFRA-INTERNET-SERVICE | unknown | ASSIGNED PA | May 12, 2017 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.192/27 | 32 | OrthoLU-Internet | unknown | ASSIGNED PA | Jun 30, 2016 | abuse@ via CH-CFS-20120220 |
| └ 37.128.181.240/28 | 16 | TRISA-INTERNET | unknown | ASSIGNED PA | Jul 21, 2016 | abuse@ via CH-CFS-20120220 |
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
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 220 | 86% | 7 | |
| Internet provider | 36 | 14% | 3 |
Network & registry
Announced by
Covering announcement 37.128.176.0/21
- Prefix
- 37.128.176.0/21
- Announced by
- AS198433 CKW Fiber Services AG
- Type
- Internet provider
- Proxy exits
- 2
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- CH-CFS-20120220
- Registrant
- CKW Fiber Services AG
- RIR
- RIPE NCC
Origin network
AS198433
CH
- Name
- CKW Fiber Services AG
- Type
- Internet provider
- Registered
- Jan 26, 2012
- Domain
- ckw.ch
- Website
- www.ckw.ch/fiber-services/uebersicht-fiber-services.html
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 37.128.176.0/21
37.128.176.0/21
Routing history
- Pattern
- Stable
- First seen
- Mar 2012
- Current origin since
- Mar 2012 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 37.128.176.0/21 | AS198433 | /24 | RIPE | RPKI valid |
IRR
Route objects on 37.128.176.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS198433 | RIPE | CKW Fiber Services AG | LITECOM-MNT | Mar 8, 2012 |
Whois
Registration for this announcement
- Range
- 37.
128. 176. 0/ 21 - Netname
- CH-CFS-20120220
- Registrant
- CKW Fiber Services AG
- Registrant country
- CH
- Organization
- CKW Fiber Services AG (ORG-CFSA1-RIPE)
- Org country
- CH
- Type
- ALLOCATED PA
- Created
- Feb 20, 2012
- Updated
- Jun 2, 2016
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CH
- Delegated
- Feb 20, 2012
- Status
- assigned
Report abuse
Abuse contact
- abuse@
litecom. ch - Name
- Litecom Network Operations
- Handle
- LCM1-RIPE