SIGMASOFT-CZ
BGP inherited
Cluster stats
| Netblocks | 6 · 1,535 IPv4 addresses |
| All fragments | 8 blocks across 2 clusters |
| Cluster ID | 210133740 |
| Registry | RIPE |
| 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 | |
Footprint over time
4 weekly snapshots · JSON
6
0 netblocks since 2026-07-05
2026-07-05
peak 6
2026-07-13
IP Ranges (6)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 62.209.220.0/23 | SIGMASOFT-CZ | RIPE | SUB-ALLOCATED PA | ● low |
| 193.86.122.0/24 | SIGMASOFT-CZ | RIPE | SUB-ALLOCATED PA | ● low |
| 194.108.18.0/23 | SIGMASOFT-CZ | RIPE | SUB-ALLOCATED PA | ● low |
| 194.213.200.0/24 | SIGMASOFT-CZ | RIPE | SUB-ALLOCATED PA | ● low |
| 212.47.3.44/30 | SIGMASOFT-CZ | RIPE | ASSIGNED PA | ● low |
| 2001:af0:ff10::/44 | SIGMASOFT-CZ | RIPE | ALLOCATED-BY-LIR | ● low |
Possibly related to this organisation
what's this?Same name family
Separately-registered clusters whose names share “SIGMASOFT CZ” — often
per-country or per-system registrations of the same brand, occasionally a different
organisation sharing the name. Not counted in this organisation's own footprint.
- SIGMASOFT-CZ-CUST-DANEK 2 blocks
Sub-allocations under carriers
IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own
naming convention, not a direct registration.
- SIGMASOFT-PA-CUST-RFSERVIS via T-Mobile Czech Republic a.s. sub-allocation
- SIGMASOFT-CUST-SOUS via T-Mobile Czech Republic a.s. sub-allocation
- SIGMASOFT-PA-CUST-EBOLA via T-Mobile Czech Republic a.s. sub-allocation
- SIGMASOFT-CUST-vlan444 via T-Mobile Czech Republic a.s. sub-allocation
- SIGMASOFT-VLAN208-VM via T-Mobile Czech Republic a.s. sub-allocation
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(6 of 6)
Possible discrepancies (5)
These blocks are registered to SIGMASOFT-CZ 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.
| 2001:af0:ff10::/44 /44 | authorized for AS13036 — T-Mobile Czech Republic a.s. |
| 62.209.220.0/23 /23 | authorized for AS13036 — T-Mobile Czech Republic a.s. |
| 194.108.18.0/23 /23 | authorized for AS13036 — T-Mobile Czech Republic a.s. |
| 193.86.122.0/24 /24 | authorized for AS13036 — T-Mobile Czech Republic a.s. |
| 194.213.200.0/24 /24 | authorized for AS13036 — T-Mobile Czech Republic a.s. |
NIC Handles
DUMY-RIPE
DUMY-RIPE
GTSCZ-MNT