Autonomous system profile

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

AS57697

Announcement observedRIPE NCC

Tier-4 Ltd · tier4

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

Last active10/5/2026, 18:59:15Snapshot expired

View network topology RDAP registration

ASN: AS57697
Registration country: Ukraine
Name: Tier-4 Ltd
Abbreviation: tier4
Registration date: 6/3/2016, 13:06:04
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.154.180.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	9/27/2026, 16:00:00	✓	×	Historical record
185.154.180.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	9/27/2026, 16:00:00	✓	×	Historical record
185.154.183.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	9/27/2026, 16:00:00	✓	×	Historical record

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

Registration and sources

Organization: Tier-4 Ltd
RIR: RIPE NCC
Registration country: Ukraine
Registration date: 6/3/2016, 13:06:04
Abuse contact: abuse@tier4.kiev.ua

Snapshot trend

10/5/2026, 18:59:153 v40 v62 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 · iana-rdap-asn-bootstrap · rir-rdap-asn