Autonomous system
AS47949 GSNETCZ gsnet.cz s.r.o.
Unclassified RIPE Cable/DSL/ISP
Summary
gsnet.cz
isp residential cable dsl
GSNETCZ is operated by gsnet.cz s.r.o.
What it's used for
- The address space carries residential customer traffic, evidenced by the reverse DNS record
13.cust.spartak.gsnet.czand the netnameCZ-NET-ONLINE-20080908. - The AS announces a single IPv4 prefix,
92.43.24.0/21, comprising 2048 addresses, while maintaining 23 observed routing neighbours. - As a cable and DSL provider, the traffic consists of subscriber eyeballs and residential internet access for customers in the Czech Republic.
Notable
- The registrant
NETONLINE Hostmastersandgsnet.cz s.r.o.align with the AS holder, confirming consistent ownership of the address space. - The operator is also known as CoolNetwork or NetOnLine, reflecting its history as a regional internet service provider.
- The inventory consists of a single contiguous /21 block with no announced IPv6 prefixes.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Peering.cz | Prague, Czech Republic | 185.0.20.196 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.216 |
Transit providers
7 upstream, 1 downstream and 8 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 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS47949- Registry name
- GSNETCZ
- Registrant
- NETONLINE-MNT
- Abuse contact
- info@net-online.cz
- Registered
- 2008-09-19
- Last changed
- 2018-09-04
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- gsnet.cz
- Also known as
- CoolNetwork/NetOnLine
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- Present at
- 2 exchanges
- Facilities
- 2 facilities
- Website
- http://www.gsnet.cz
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
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 3 authorising AS47949
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 3 naming AS47949
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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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