asn.dev

Autonomous system

AS57472 JRNET JR-NET, s.r.o.

Unclassified RIPE

IPv4 addresses 768 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

JR-NET

Czechia · AI-generated

isp residential czech small

JRNET is operated by JR-NET, s.r.o.

What it's used for

  • The address space carries residential internet traffic, evidenced by reverse DNS records pointing to vaslepsi.net (e.g., 38-128.vaslepsi.net, 35-64.vaslepsi.net).
  • The AS announces 768 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small access network rather than a transit provider.
  • Traffic consists of subscriber eyeballs for a local Czech internet service provider.

Notable

  • Registrants for both announced prefixes (193.150.38.0/23 and 193.150.35.0/24) are listed as JR-NET, s.r.o., matching the AS holder.
  • The address inventory is compact, consisting of two contiguous IPv4 blocks and a single IPv6 /32.

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

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS39761ABAK, Co.Ltd.155

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-12, 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 2 prefixes · 768 addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57472
Registry name
JRNET
Registrant
MNT-ABAK
Abuse contact
ioj@post.cz
Registered
2011-11-04
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
33% valid · 1 valid, 2 with no ROA
ROAs
1 authorising AS57472
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS57472

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: 453 networks and 1,848 prefixes, as published 2026-11-12. 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