CKW Fiber Services AG
Data as of 2026-09-06
BGP inherited
This organisation
| Netblocks | 16 · 7,936 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2a00:82c0::/32) |
| Record ID | 236107627 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (16)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 31.40.236.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 31.40.237.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 37.128.176.0/21 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 45.9.163.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 87.117.120.0/21 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 89.200.220.0/22 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 89.200.220.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 89.200.221.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 89.200.222.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 89.200.223.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 185.80.64.0/22 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 193.135.219.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 195.225.60.0/23 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 203.1.19.0/24 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 2a00:82c0::/32 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
| 2a0b:4200:2001::/48 | CKW Fiber Services AG | BGP | ANNOUNCED | ● high |
IPv6 ranges (2)
Footprint over time
11 weekly snapshots · JSON
20
+1 netblocks since 2026-07-05
2026-07-05
peak 20
2026-09-06
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(20 of 20)
Possible discrepancies (1)
These blocks are registered to CKW Fiber Services AG but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 193.135.219.0/24 /24 | authorized for AS3303 — Swisscom (Schweiz) AG |
NIC Handles
AS198433
AS3303
CH-UNISOURCE-MNT
DUMY-RIPE
DUMY-RIPE
LITECOM-MNT
LITECOM-MNT
NINE-MNT
ORG-CFSA1-RIPE
RIPE-NCC-HM-MNT
SMARO-MNT
ch-opacc-1-mnt
+3 more