asn.dev

Autonomous system

AS213387 TESUNET

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 1 recorded by PCH
Upstreams 6 0 downstream
Flagged prefixes 0 none

Summary

TeSuNet s.r.o.

Czechia · AI-generated

transit infrastructure czech

TESUNET is operated by TeSuNet s.r.o.

What it's used for

  • The space carries infrastructure for telecommunications operators, as indicated by the netname TESUNET and the registrant TeSuNet s.r.o.
  • With 256 IPv4 addresses announced across 1 prefix and 21 observed neighbours, the high neighbour-to-address ratio indicates a transit or infrastructure role rather than an access network.
  • Traffic from this AS consists of backhaul and interconnection for other telecom operators, given that TeSuNet s.r.o. manages optical and wireless infrastructure offered for further use by telecommunications operators.

Notable

  • The registrant TeSuNet s.r.o. matches the AS handle TESUNET and the announced prefix 194.36.94.0/24.
  • The address inventory consists of a single /24 block, representing a small, focused infrastructure estate.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
NIX.CZ - Neutral Internet eXchange for the Czech RepublicPrague, Czech Republic91.210.17.29

Transit providers

6 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS25512CD-Telematika a.s.43
AS6939Hurricane Electric LLC12
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH1
AS8218Zayo Infrastructure France SA1
AS24482SG.GS1
AS29504Freenet Liberec, z.s.1

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, 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 · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
CZCzechia1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS213387
Registry name
TESUNET
Registrant
TeSuNet s.r.o.
Abuse contact
tesunet@tesunet.cz
Registered
2020-04-07
Last changed
2020-11-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS213387
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS213387

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: 448 networks and 1,849 prefixes, as published 2026-10-30. 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