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AS215638Cilix Limited

United KingdomRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS215638 (Cilix Limited), an access network registered in the United Kingdom with RIPE NCC, originates 10 IPv4 prefixes covering 2.8k addresses and 8 IPv6 prefixes. By IPv4 address space that makes it the 22,789th-largest of the 80,747 networks we see originating IPv4, and the 676th-largest of 2,122 in the United Kingdom. It is seen behind 44 upstream networks, most often AS9002 (RETN Limited) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 28 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 89% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

10

IPv6 prefixes

8

IPv4 addresses

2.8k

IPv6 /64s

64.4B

Upstream graph

The networks AS215638 is seen behind, one and two hops out, drawn from real AS paths.

AS215638Toward the internet core
Upstream graph for AS215638: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS215638Cilix LimitedThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS8888xTom Pty LtdAS9002RETN LimitedAS23673Cogetel Online, C…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS3356Lumen (Level 3)AS6667Elisa OyjAS23764China Telecom Glo…AS55329Telcotech Ltd.

Networks observed one and two hops upstream of AS215638 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

392

adjacent networks

Upstreams
4411%
Peers
32082%
Downstreams
287%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 44.

Upstreams of AS215638
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer5,32856
AS1299Arelion (fka. Telia Carrier)SEPeer64945
AS174Cogent Communications, LLCUSPeer29315
AS23673Cogetel Online, Cambodia, ISPKHAdjacent2492
AS8888xTom Pty LtdAUPeer2342
AS213151Christian ElsenDEPeer2332
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer2282
AS8298IPng Networks GmbHCHPeer2032
AS3214xTom GmbHDEPeer1601
AS56662Marcin GondekPLPeer1581

Prefixes

The largest blocks AS215638 originates, widest first.

Largest prefixes originated by AS215638
PrefixAddressesVisibility
213.218.252.0/2351275/76
62.84.169.0/2425675/76
82.27.23.0/2425675/76
89.117.218.0/2425675/76
89.213.96.0/2425675/76
91.217.229.0/2425676/76
109.176.243.0/2425675/76
151.243.216.0/2425675/76
185.21.255.0/2425675/76
185.225.124.0/2425676/76

Routing health

How AS215638'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%18
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more88.9%16
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%11.1%2

Prefix sizes

IPv4 — 10 prefixes

IPv6 — 8 prefixes

  • /2934.4B × /6412.5%1
  • /324.3B × /6487.5%7

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced2a14:f700::/2922nd Oct 2026
  • Withdrawn2a14:f700::/2922nd Oct 2026

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