AS203645
Jan Ryznar
AS203645 is Jan Ryznar (rps.cz). It announces 1,024 IPv4 addresses in 4 prefixes, and 23 IPv6 prefixes.
Czechia· RIPE NCC· allocated 2016-01-07· ISP
1,024
IPv4 addresses announced
4
IPv4 prefixes
23
IPv6 prefixes
0.00%
of its routes RPKI-valid
1,024
of its IPv4 geolocated
1
country
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Czechia1,024 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- RYZNAR-AS
- name
- Jan Ryznar
- org
- ORG-JR41-RIPE
- org name
- Jan Ryznar
- org address
- Olsany 168, 789 62, Olsany, CZECH REPUBLIC
- org country
- CZ
- country
- CZ
- source
- ripe
- status
- ASSIGNED
- created
- 2016-01-07
- updated
- 2018-11-23
- maintainer
- RIPE-NCC-END-MNT|cz-rpsnet-1-mnt
- abuse name
- Abuse-C Role
- abuse email
- internet@rps.cz
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- 0.10%
- anyIP, LightningProxies0.20%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- 0.29%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 185.133.188.0/24 | Czechia | Not found | 17 | 2026-10-02 |
| 185.133.189.0/24 | Czechia | Not found | 17 | 2026-10-02 |
| 185.133.190.0/24 | Czechia | Not found | 17 | 2026-10-02 |
| 185.133.191.0/24 | Czechia | Not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2a01:7d20:100::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:101::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:200::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:201::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:300::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:300::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:302::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:500::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:700::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:a00::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:a01::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:c00::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:e00::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:1000::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:1200::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:1201::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:2000::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:2011::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:2300::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:2311::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:7d20::/48 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:fe00::/40 | Czechia | Not found | 19 | 2026-10-02 |
| 2a01:7d20:ff00::/40 | Czechia | Not found | 19 | 2026-10-02 |
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