subnet.im

AS21013eww ag

AustriaRegistryRIPE NCCTypeCarrier

As of 27th September 2026, AS21013 (eww ag), a transit carrier registered in Austria with RIPE NCC, originates 11 IPv4 prefixes covering 25.1k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 6,197th-largest of the 79,536 networks we see originating IPv4, and the 52nd-largest of 615 in Austria. It is seen behind 41 upstream networks, most often AS6461 (Zayo Bandwidth) and AS33891 (Core-Backbone GmbH), and in front of 33 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

11

IPv6 prefixes

3

IPv4 addresses

25.1k

IPv6 /64s

38.7B

Upstream graph

The networks AS21013 is seen behind, one and two hops out, drawn from real AS paths.

AS21013Toward the internet core
Upstream graph for AS21013: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21013eww agThis networkAS1299Arelion (fka. Tel…AS3257GTT Communication…AS6461Zayo BandwidthAS6939Hurricane Electri…AS33891Core-Backbone GmbHAS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS32590Valve CorporationAS6667Elisa OyjAS20130Depaul UniversityAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS21013 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

285

adjacent networks

Upstreams
4114%
Peers
21174%
Downstreams
3312%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 41.

Upstreams of AS21013
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer1,35021
AS33891Core-Backbone GmbHDEPeer85827
AS1299Arelion (fka. Telia Carrier)SEPeer64521
AS6939Hurricane Electric LLCUSPeer60531
AS3257GTT Communications Inc.USPeer54110
AS3356Lumen (Level 3)USPeer42110
AS174Cogent Communications, LLCUSPeer3166
AS1764Next Layer TelecommunicationsATPeer2368
AS13030Init7 (Switzerland) Ltd.CHPeer2344
AS39122Blacknight Internet Solutions LimitedIEPeer2182

Prefixes

The largest blocks AS21013 originates, widest first.

Largest prefixes originated by AS21013
PrefixAddressesVisibility
85.31.0.0/198.2k81/82
212.52.192.0/198.2k81/82
80.243.160.0/204.1k81/82
91.210.140.0/221k81/82
185.91.80.0/221k81/82
185.136.80.0/221k81/82
91.221.138.0/2351281/82
91.220.179.0/2425681/82
194.242.35.0/2425681/82
195.190.26.0/2425681/82

Routing health

How AS21013'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

  • Valid100.0%14
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%14
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 11 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /324.3B × /6433.3%1
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS21013 started or stopped in this period.

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