Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS43037

Announcement observedRIPE NCC

SEZNAM-CZ Seznam.cz, a.s. · SEZNAM-CZ

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/3/2026, 17:11:32Snapshot expired

View network topology RDAP registration

ASN: AS43037
Registration country: Czechia
Name: SEZNAM-CZ Seznam.cz, a.s.
Abbreviation: SEZNAM-CZ
Registration date: 5/29/2007, 08:00:03
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.66.188.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
77.75.72.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
77.75.74.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
77.75.75.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
77.75.76.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
77.75.78.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: SEZNAM-CZ Seznam.cz, a.s.
RIR: RIPE NCC
Registration country: Czechia
Registration date: 5/29/2007, 08:00:03
Abuse contact: abuse@seznam.cz

Snapshot trend

10/3/2026, 17:11:326 v46 v653 Upstream · 62 Uncertain

10/3/2026, 16:53:530 v40 v60 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap