asn.dev

Autonomous system

AS39679 ASJZTKFT

Hosting RIPE

IPv4 addresses 1.79K 6 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly HU
Exchanges 1 recorded by PCH
Upstreams 4 2 downstream
Flagged prefixes 0 none

Summary

JZT Informatikai Kft.

Hungary · AI-generated

hosting business hungary

ASJZTKFT is operated by JZT Informatikai Kft., a Hungarian information technology company.

What it's used for

  • The address space carries hosting and server infrastructure, evidenced by reverse DNS entries such as panel.hosting4u.hu and static-128.sv4u.hu, alongside netnames like JZT-SRV and JZT-NET.
  • The AS announces 1792 IPv4 addresses across 6 prefixes and 1 IPv6 prefix, with 12 observed neighbours; this ratio indicates a hosting or business network rather than a transit provider.
  • Traffic from this AS consists of web hosting, server endpoints, and IT services provided to business clients.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing JZT Informatikai Kft for HU-JZTINFORMATIKAI-20190218, JZT-INFORMATIKA, JZT-SRV, and JZT-NET.
  • The prefix 193.188.192.0/24 is registered to Pipenet Informatics and Securities Bt. under the netname PIPENET, indicating a distinct ownership or lease arrangement within the announced space.
  • The inventory includes a mix of /24 and /23 blocks, with the largest being 45.67.158.0/23.

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
Budapest Internet ExchangeBudapest, Hungary193.188.137.73

Transit providers

4 upstream, 2 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9002RETN Limited389
AS215366Gabor Birincsik30
AS6939Hurricane Electric LLC14
AS33891Core-Backbone GmbH14

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 6 prefixes · 1.79K addresses IPv6 1 prefixes

CountryNamePrefixes
HUHungary7

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS39679
Registry name
ASJZTKFT
Registrant
DENINET-MNT
Abuse contact
abuse@jztkft.hu
Registered
2017-10-31
Last changed
2020-11-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
10 authorising AS39679
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
12 naming AS39679

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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