asn.dev

Autonomous system

AS34040 CZTTNET-AS

Unclassified RIPE

IPv4 addresses 13.31K 7 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

TTNET s.r.o.

Czechia · AI-generated

isp residential fiber czech

The AS handle CZTTNET-AS is held by TTNET s.r.o., a Czech internet service provider.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries like core.ttnet.cz and netnames such as TTN-FREENET2 and TTN-INFRASDL-NET128.
  • The network announces 13,312 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, while maintaining only 1 observed neighbour, a ratio that indicates an access or eyeball network rather than a transit provider.

Notable

  • All registrants in the evidence pack are consistent with the announcer, listing either TTNET s.r.o. or CZTTNET ABUSE for the largest prefixes.
  • The address inventory is finely subdivided into multiple /20, /21, /22, and /23 blocks, suggesting internal segmentation for different service tiers or geographic sites within the Czech Republic.

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
AS16019Vodafone Czech Republic a.s.273

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 7 prefixes · 13.31K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia8

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS34040
Registry name
CZTTNET-AS
Registrant
CZTTNET-MNT
Abuse contact
abuse-ttnet@ttnet.cz
Registered
2004-10-07
Last changed
2026-02-26
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 5 valid, 0 with no ROA
ROAs
5 authorising AS34040
ASPA
2 declared providers
IRR
100% registered · 5 of 5 announcements
Route objects
35 naming AS34040

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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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