OptoNet Communication, spol. s.r.o.
AS43542 is OptoNet Communication, spol. s.r.o. (optonet.cz). It announces 7,936 IPv4 addresses in 1 prefixes, and 1 IPv6 prefixes.
Czechia· RIPE· allocated 2007-08-20· business
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Czechia7,936 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- OptoNet-AS
- name
- OptoNet Communication, spol. s.r.o.
- org
- ORG-OCLS3-RIPE
- org name
- OptoNet Communication, spol. s.r.o.
- org address
- Cerveny Kriz 318, 586 01, Jihlava, CZECH REPUBLIC
- org country
- CZ
- country
- CZ
- source
- ripe
- status
- ASSIGNED
- created
- 2007-08-20
- updated
- 2026-03-16
- remarks
- ======== TRANSIT UPSTREAM ======== / -- VODAFONE-CZ -- / -- T-Mobile CZ -- / ======== IXs peers ======== / -- NIX.CZ ROUTESERVERS -- / ======== TRANSIT CUSTOMERS ======== / -- Kraj Vysocina -- / -- LCJ s.r.o. -- / -- NGA Services, spol. s r.o. -- / -- CNI Group s.r.o. --
- maintainer
- RIPE-NCC-END-MNT|MNT-OPTONET
- abuse name
- ABUSE-C OptoNet Communication
- abuse email
- abuse@optonet.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.
- VPN IP162watchguard2.04%
- anyip, dataimpulse, onesproxy0.21%
- None here
- None here
- None here
- None here
- Hosting IP3,32841.94%
- None here
- None here
- None here
- SSH IP500.63%
- SMTP IP120.15%
- 0.16%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 78.156.128.0/19 | Czechia | valid | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2a00:d940::/32 | Czechia | valid | 20 | 2026-10-02 |
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