asn.dev

Autonomous system

AS34819 h17 H17 Networks, s.r.o.

Unclassified RIPE

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

Summary

H17 Networks

Czechia · AI-generated

business czech small

The AS handle H17 is held by H17 Networks, s.r.o.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the reverse DNS entry bbone.habr2.nat.h17.cz and the netname CZ-H17-20190624.
  • The AS announces 1024 IPv4 addresses and 1 IPv6 prefix, with only 3 observed neighbours, indicating a small-scale internal or business network rather than a transit provider.

Notable

  • The registrant H17 Networks, s.r.o. matches the announcer, confirming direct ownership of the address space.
  • The address inventory consists of a single IPv4 block (45.90.100.0/22) and one IPv6 prefix (2a0d:1c0::/29), representing a compact and unified corporate 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

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

Transit providers

1 upstream, 2 downstream and 7 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS49095PRAHA12.com s.r.o.96

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-13, 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 1 prefixes

CountryNamePrefixes
CZCzechia2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS34819
Registry name
h17
Registrant
mnt-cz-h17-1
Abuse contact
abuse@h17.cz
Registered
2019-09-27
Last changed
2019-09-27
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS34819
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS34819

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: 455 networks and 1,849 prefixes, as published 2026-11-13. 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