AS43757
ICZ a.s.
AS43757 is ICZ a.s. (i.cz). It announces 2,304 IPv4 addresses in 2 prefixes, and 1 IPv6 prefix.
Czechia· RIPE NCC· allocated 2007-09-24· Business
2,304
IPv4 addresses announced
2
IPv4 prefixes
1
IPv6 prefix
100.00%
of its routes RPKI-valid
2,304
of its IPv4 geolocated
2
countries
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ICZAS-CZ
- name
- ICZ a.s.
- org
- ORG-Ia714-RIPE
- org name
- ICZ a.s.
- org address
- Na hrebenech II 1718/10, Praha 4, 140 00, Czech Republic
- org country
- CZ
- country
- CZ
- source
- ripe
- status
- ASSIGNED
- created
- 2007-09-24
- updated
- 2025-10-02
- remarks
- >> =========== Czech Republic =========== / >> O2 Czech Republic / >> T-Mobile Czech Republic (GTS CZ) / >> =========== Slovakia ================= / >> Slovak Telekom / >> Slovanet / >> SWAN
- maintainer
- RIPE-NCC-END-MNT|ICZAS-MNT
- abuse name
- Abuse-C Role
- abuse email
- abuse@i.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.
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 78.31.24.0/21 | Czechia | Valid | 17 | 2026-10-02 |
| 192.108.126.0/24 | Slovakia | Valid | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2001:67c:1578::/48 | Czechia | Valid | 19 | 2026-10-02 |
00 · Evaluate
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01 · License
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