C4K5 LLC
Cluster stats
| Netblocks | 16 |
| Cluster ID | 191677185 |
| Registry | ARIN |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 10 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
2 weekly snapshots · JSON
16
0 netblocks since 2026-07-05
2026-07-05
peak 16
2026-07-06
IP Ranges (16)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 31.57.203.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 46.37.119.0/24 | C4K5 LLC | RIPE | SUB-ALLOCATED PA | ● high |
| 77.83.106.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 151.245.173.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 151.245.175.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 155.117.164.0/24 | C4K5 LLC | RIPE | LEGACY | ● high |
| 162.141.124.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 162.141.127.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 167.148.15.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 167.148.175.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 167.148.217.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 167.148.219.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 191.101.207.0/24 | C4K5 LLC | RIPE | SUB-ALLOCATED PA | ● high |
| 191.101.227.0/24 | C4K5 LLC | RIPE | ASSIGNED PA | ● high |
| 191.101.251.0/24 | C4K5 LLC | RIPE | SUB-ALLOCATED PA | ● high |
| 198.20.128.0/24 | C4K5 LLC | ARIN | ● high |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(16 of 16)
Possible discrepancies (16)
These blocks are registered to C4K5 LLC but cryptographically authorized for a different, unrelated network (3 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 46.37.119.0/24 /24 | authorized for AS35916 — MULTACOM CORPORATION |
| 191.101.207.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 191.101.251.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 191.101.227.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 77.83.106.0/24 /24 | authorized for AS59895 — Binary Racks Limited |
| 31.57.203.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 167.148.15.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 155.117.164.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 167.148.175.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 167.148.219.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 162.141.127.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 167.148.217.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 162.141.124.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 151.245.175.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
| 151.245.173.0/24 /24 | authorized for AS397423 — Tier.Net Technologies LLC |
+1 more — see the REST API
NIC Handles
C11574668
CL10035-RIPE
DCL-577
DUMY-RIPE
DUMY-RIPE
GRINI3-ARIN
IUA-ARIN
IUS-ARIN
ORG-CL758-RIPE
netutils-mnt