Alef Nula a.s.
Data as of 2026-08-23
BGP inherited
Cluster stats
| Netblocks | 5 · 1,024 IPv4 addresses |
| IPv6 | 1 prefix (largest 2001:67c:21d0::/48) |
| All fragments | 6 blocks across 2 clusters |
| Cluster ID | 227151992 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 3 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
5 weekly snapshots · JSON
7
0 netblocks since 2026-07-05
2026-07-05
peak 7
2026-07-19
IP Ranges (5)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 193.239.0.0/22 | Alef Nula a.s. | BGP | ANNOUNCED | ● high |
| 193.239.0.0/23 | Alef Nula a.s. | BGP | ANNOUNCED | ● high |
| 193.239.1.0/24 | Alef Nula a.s. | BGP | ANNOUNCED | ● high |
| 193.239.2.0/23 | Alef Nula a.s. | BGP | ANNOUNCED | ● high |
| 2001:67c:21d0::/48 | Alef Nula a.s. | BGP | ANNOUNCED | ● high |
IPv6 ranges (1)
| CIDR |
|---|
| 2001:67c:21d0::/48 |
NIC Handles
ALEFCZ-MNT
AS35096
RIPE-NCC-END-MNT