subnet.im

AS33921Lebara Ltd

United KingdomRegistryRIPE NCC

As of 26th September 2026, AS33921 (Lebara Ltd), a network registered in the United Kingdom with RIPE NCC, originates 12 IPv4 prefixes covering 3.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 20,108th-largest of the 79,480 networks we see originating IPv4, and the 628th-largest of 2,074 in the United Kingdom. It is seen behind 16 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC). 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

12

IPv6 prefixes

1

IPv4 addresses

3.1k

IPv6 /64s

16.8M

Upstream graph

The networks AS33921 is seen behind, one and two hops out, drawn from real AS paths.

AS33921Toward the internet core
Upstream graph for AS33921: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS33921Lebara LtdThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS8220COLTAS24785Joint Transit (Br…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS15576NTS workspace AGAS20562Open Peering (Bro…

Networks observed one and two hops upstream of AS33921 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

77

adjacent networks

Upstreams
1621%
Peers
6179%
Downstreams
00%

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

Upstreams of AS33921
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer32481
AS174Cogent Communications, LLCUSPeer29280
AS3356Lumen (Level 3)USPeer252111
AS8220COLTGBPeer8181
AS24785Joint Transit (Broadband Hosting B.V.)NLPeer6464
AS6939Hurricane Electric LLCUSPeer44
AS7713PT Telkom Indonesia TbkIDPeer33
AS38880Micron21 Datacentre Pty LtdAUPeer22
AS24940Hetzner Online GmbHDEPeer11
AS132337AxclusiveSGPeer11

Prefixes

The largest blocks AS33921 originates, widest first.

Largest prefixes originated by AS33921
PrefixAddressesVisibility
5.42.207.0/2425681/81
45.92.79.0/2425681/81
84.246.112.0/2425680/81
84.246.113.0/2425680/81
84.246.114.0/2425680/81
84.246.115.0/2425680/81
91.208.59.0/2425681/81
141.98.208.0/2425680/81
185.5.129.0/2425681/81
194.26.132.0/2425681/81

Routing health

How AS33921'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%13
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 1 prefixes

  • /4016.8M × /64100.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

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