subnet.im

AS212175Stelia Ltd

United KingdomRegistryRIPE NCCTypeCarrier

As of 26th September 2026, AS212175 (Stelia Ltd), a transit carrier registered in the United Kingdom with RIPE NCC, originates 9 IPv4 prefixes covering 2.3k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 24,092nd-largest of the 79,516 networks we see originating IPv4, and the 722nd-largest of 2,074 in the United Kingdom. It is seen behind 3 upstream networks, most often AS174 (Cogent Communications, LLC) and AS3257 (GTT Communications Inc.), and in front of 3 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

9

IPv6 prefixes

6

IPv4 addresses

2.3k

IPv6 /64s

34.4B

Upstream graph

The networks AS212175 is seen behind, one and two hops out, drawn from real AS paths.

AS212175Toward the internet core
Upstream graph for AS212175: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS212175Stelia LtdThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6667Elisa OyjAS398465Rackdog LLC

Networks observed one and two hops upstream of AS212175 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

13

adjacent networks

Upstreams
323%
Peers
754%
Downstreams
323%

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

Upstreams of AS212175
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer95985
AS3257GTT Communications Inc.USPeer79080
AS1299Arelion (fka. Telia Carrier)SEPeer259103

Prefixes

The largest blocks AS212175 originates, widest first.

Largest prefixes originated by AS212175
PrefixAddressesVisibility
79.135.120.0/2425680/81
185.165.50.0/2425680/81
185.165.51.0/2425680/81
185.225.9.0/2425680/81
194.110.239.0/2425680/81
212.104.135.0/2425680/81
212.104.138.0/2425680/81
212.104.139.0/2425680/81
213.254.169.0/2425680/81
2a10:9e80::/2934.4B × /6462/64

Routing health

How AS212175'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%15
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%15
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 9 prefixes

IPv6 — 6 prefixes

  • /2934.4B × /6416.7%1
  • /441M × /6416.7%1
  • /4865.5k × /6466.7%4

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS212175 started or stopped in this period.

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