Autonomous system
AS25496 ZT-AS
Unclassified RIPE
Summary
ZSR - ZT Bratislava
business slovakia corporate
ZT-AS is operated by ZSR - ZT Bratislava.
What it's used for
- The address space is registered under netnames
SK-ZSR-20021118andSK-ZSR-20131219, both attributed to ZSR - ZT Bratislava. - The AS announces 5120 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 14 observed neighbours. This ratio of address space to peering partners suggests a business or corporate network rather than a large-scale transit provider.
Notable
- Registrants for both announced IPv4 prefixes align with the AS holder, listing ZSR - ZT Bratislava and the ZT_OT Team for abuse handling.
- The inventory consists of two distinct IPv4 blocks, 217.12.48.0/20 and 185.43.112.0/22, alongside a single /32 IPv6 prefix.
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
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Slovak Internet eXchange Bratislava | Bratislava, Slovakia | 192.108.148.190 |
Transit providers
6 upstream, 0 downstream and 10 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 5.12K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SK | Slovakia | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS25496- Registry name
- ZT-AS
- Registrant
- ZSR - ZT Bratislava
- Abuse contact
- NMC.datanet@zsr.sk
- Registered
- 2002-12-10
- Last changed
- 2022-01-27
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- ZSR - ZT Bratislava
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS-SET-ZT- Present at
- 1 exchanges
- Website
- https://www.zsr.sk/zt/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS25496
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS25496
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: 440 networks and 1,773 prefixes, as published 2026-10-13. 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