Autonomous system
AS50163 ALTNET-SKVELYNET
Unclassified RIPE
Summary
Altnet s.r.o.
isp residential czech local
ALTNET-SKVELYNET is operated by Altnet s.r.o.
What it's used for
- The address space carries residential and small business internet access, evidenced by reverse DNS entries such as
ip-0-210.skvelynet.czandip-254-213.skvelynet.cz. - The network announces 2048 IPv4 addresses in a single /21 prefix (109.71.208.0/21) and one IPv6 prefix, with only 2 observed routing neighbours, indicating a local access provider rather than a transit carrier.
- Traffic consists of subscriber eyeballs for wireless and wired internet connections, along with VoIP services, as Altnet s.r.o. provides internet connectivity through its own network in the Czech Republic.
Notable
- The RDAP registrant for the announced prefix is Altnet s.r.o., matching the AS holder and the netname
CZ-ALTNET-20091124. - The address inventory is compact, consisting of a single contiguous IPv4 block and one IPv6 prefix, typical of a regional ISP managing its own allocated space.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
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 1 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50163- Registry name
- altnet-skvelynet
- Registrant
- MNT-CZ-ALTNET
- Abuse contact
- admini@altnet.cz
- Registered
- 2009-11-24
- Last changed
- 2018-11-16
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS50163
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS50163
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: 436 networks and 1,771 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