Autonomous system
AS21430 WIA-AS
Unclassified RIPE
Summary
WIA
isp residential cable czech
The AS handle WIA-AS is held by WIA spol. s.r.o.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS entries such as
pra-strah-trib-v62-wia.cz,r.lucerna.cz, andvpn-koncentrator.wia.cz. - With 41,216 IPv4 addresses announced across 64 prefixes and 49 observed neighbours, the ratio indicates an access network providing connectivity to end-users rather than a transit provider.
Notable
- All registrants in the RDAP sample are consistent with the announcer, listing
WIA spol. s.r.o.for every prefix. - The address inventory is finely subdivided into numerous /22 and /23 blocks, reflecting site-by-site segmentation typical of a regional ISP managing distinct customer segments or geographic areas.
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 | 185.0.20.26 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.27 |
Transit providers
11 upstream, 9 downstream and 34 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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 64 prefixes · 41.22K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 68 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21430- Registry name
- WIA-AS
- Registrant
- WIA spol. s.r.o.
- Abuse contact
- abuse@wia.cz
- Registered
- 2001-12-07
- Last changed
- 2026-08-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 97% valid · 68 valid, 2 with no ROA
- ROAs
- 70 authorising AS21430
- ASPA
- 4 declared providers
- IRR
- 100% registered · 70 of 70 announcements
- Route objects
- 76 naming AS21430
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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