Jan Ryznar
Cluster stats
| Netblocks | 32 |
| All fragments | 413 blocks across 183 clusters |
| Cluster ID | 191779170 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 13 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (32)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 85.163.224.0/20 | Jan Ryznar | RIPE | ASSIGNED PA | ● high |
| 185.133.188.0/24 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 185.133.189.0/24 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 185.133.190.0/24 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 185.133.191.0/24 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:100::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:101::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:200::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:201::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:300::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:300::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:302::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:500::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:700::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:a00::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:a01::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:c00::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:e00::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:1000::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:1200::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:1201::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:2000::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:2011::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:2300::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:2311::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:7d20::/48 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:fe00::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 2a01:7d20:ff00::/40 | Jan Ryznar | BGP | ANNOUNCED | ● high |
| 125.213.222.80/28 | JAN-KAB | APNIC | ASSIGNED NON-PORTABLE | ● low |
| 185.133.188.0/22 | Jan Ryznar | RIPE | ALLOCATED PA | ● low |
| 212.244.183.128/26 | JAN-POL | RIPE | ASSIGNED PA | ● low |
| 2a01:7d20::/32 | Jan Ryznar | RIPE | ALLOCATED-BY-RIR | ● low |
Network trust
what's this?
RPKI hygiene: F
how networks compare →
9.4%
of checked blocks have valid RPKI ROA coverage
(3 of 32)
Possible discrepancies (1)
These blocks are registered to Jan Ryznar 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.
| 85.163.224.0/20 /20 | authorized for AS28725 — CETIN a.s. |
NIC Handles
AR63479-RIPE
AS203645
CETIN-MNT2
DUMY-RIPE
DUMY-RIPE
HI17-AP
MAINT-AF-IO-GLOBAL
ORG-JR41-RIPE
ORG-JR75-RIPE
RIPE-NCC-HM-MNT
TPNET
YK182-AP
+1 more