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AS12971Internet Viennaweb Service GmbH

AustriaRegistryRIPE NCC

As of 11th November 2026, AS12971 (Internet Viennaweb Service GmbH), a network registered in Austria with RIPE NCC, originates 7 IPv4 prefixes covering 15.4k addresses. By IPv4 address space that makes it the 8,515th-largest of the 80,743 networks we see originating IPv4, and the 63rd-largest of 624 in Austria. It is seen behind 1 upstream network, most often AS20751 (AZISTA GmbH), and in front of 1 downstream network. 86% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 86% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

7

IPv6 prefixes

0

IPv4 addresses

15.4k

IPv6 /64s

0

Upstream graph

The networks AS12971 is seen behind, one and two hops out, drawn from real AS paths.

AS12971Toward the internet core
Upstream graph for AS12971: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12971Internet Viennawe…This networkAS20751AZISTA GmbHAS1764Next Layer Teleco…AS24953NETPLANET GmbH

Networks observed one and two hops upstream of AS12971 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

4

adjacent networks

Upstreams
125%
Peers
250%
Downstreams
125%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS12971
NetworkCountryRelationshipPathsVantage pts
AS20751AZISTA GmbHATPeer68576

Prefixes

The largest blocks AS12971 originates, widest first.

Largest prefixes originated by AS12971
PrefixAddressesVisibility
195.110.192.0/198.2k1/76
195.110.192.0/204.1k76/76
195.110.212.0/221k76/76
195.110.220.0/221k76/76
195.110.210.0/2351276/76
195.110.208.0/2425676/76
195.110.209.0/2425676/76

Routing health

How AS12971's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid85.7%6
  • Invalid0.0%0
  • No ROA14.3%1

Propagation

  • Globally propagated90% of full-feed peers or more85.7%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%14.3%1

Prefix sizes

IPv4 — 7 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced195.110.192.0/1929th Oct 2026
  • Withdrawn195.110.192.0/1912th Oct 2026
  • Withdrawn195.110.216.0/2212th Oct 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.