asn.dev

Autonomous system

AS197251 TEREWENKO-AS

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly UA
Exchanges 0 recorded by PCH
Upstreams 3 1 downstream
Flagged prefixes 0 none

Summary

FOP Tereshchenko Oleksandr Trohumovich

Ukraine · AI-generated

isp residential ukraine small

The AS handle TEREWENKO-AS is held by FOP Tereshchenko Oleksandr Trohumovich.

What it's used for

  • The address space carries residential broadband traffic, indicated by reverse DNS entries such as pppoe-91-217-59-126.klad.zp.ua and host-91-217-58-128.klad.zp.ua.
  • The network announces 512 IPv4 addresses across 1 prefix (91.217.58.0/23) and maintains 14 observed neighbours.
  • As a small Ukrainian ISP, the traffic consists of subscriber eyeballs accessing the internet via PPPoE and static host assignments.

Notable

  • The registrant FOP TERESHCHENKO OLEKSANDR TROHUMOVICH matches the AS holder, with the netname AS-TEREWENKO confirming ownership.
  • The address inventory is a single contiguous /23 block, typical for a small local provider.

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

3 upstream, 1 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC40
AS51528KOZOBROD ANDRIY ANATOLIYOVICH28
AS24482SG.GS3

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
UAUkraine1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS197251
Registry name
TEREWENKO-AS
Registrant
MNT-TEREWENKO
Abuse contact
root@klad.zp.ua
Registered
2010-09-02
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS197251
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS197251

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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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