asn.dev

Autonomous system

AS57697 TIER4

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly UA
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

Tier-4 Ltd

Ukraine · AI-generated

business ukraine ipv4

The AS handle TIER4 is held by Tier-4 Ltd.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netname UA-TIER-4-20160602 and reverse DNS entries pointing to unallocated.tier4.kiev.ua.
  • The network announces 1024 IPv4 addresses across a single prefix (185.154.180.0/22) with 3 observed neighbours, a ratio consistent with a small business or internal corporate estate rather than a transit provider.
  • Traffic from this AS consists of internal corporate endpoints and services associated with the Kiev-based organization.

Notable

  • The RDAP registrant Tier-4 Ltd aligns with the AS holder tier4 Tier-4 Ltd.
  • The inventory consists of a single contiguous /22 block, representing a compact and unified address allocation.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 1 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS42352TOV 'Dream Line Holding'118
AS43668"AS43668" LLC59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
UAUkraine1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57697
Registry name
tier4
Registrant
Tier-4 Ltd
Abuse contact
abuse@tier4.kiev.ua
Registered
2016-06-03
Last changed
2022-08-22
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS57697
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
6 naming AS57697

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,779 prefixes, as published 2026-10-24. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check