Data as of Nov 12, 2026
37.128.178.136/30
No anonymizer space · no proxy exits in 30 daysCKW Fiber Services AG
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@ |
| └ 37.128.178.136/30 | 4 | INFRA-INTERNET-SERVICE | CKW Fiber Services AG | ASSIGNED PA | Jan 22, 2013 | 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.
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