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AS213905ISPLABS LIMITED

United KingdomRegistryRIPE NCCTypeContent

As of 11th November 2026, AS213905 (ISPLABS LIMITED), a content network registered in the United Kingdom with RIPE NCC, originates 5 IPv4 prefixes covering 1.3k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 34,021st-largest of the 80,733 networks we see originating IPv4, and the 960th-largest of 2,122 in the United Kingdom. It is seen behind 3 upstream networks, most often AS203446 (SMARTNET Germany GmbH) and AS214481 (Wojciech Czapkowicz), and in front of 5 downstream networks. 53% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 80% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

5

IPv6 prefixes

10

IPv4 addresses

1.3k

IPv6 /64s

1.6M

Upstream graph

The networks AS213905 is seen behind, one and two hops out, drawn from real AS paths.

AS213905Toward the internet core
Upstream graph for AS213905: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS213905ISPLABS LIMITEDThis networkAS6517LAKENETWORKSAS203446SMARTNET Germany …AS214481Wojciech Czapkowi…AS6939Hurricane Electri…AS56786NEXIM ITALIA SRLAS174Cogent Communicat…AS3257GTT Communication…AS49581Ferdinand Zink tr…AS50917Diederik Focko de…

Networks observed one and two hops upstream of AS213905 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

19

adjacent networks

Upstreams
316%
Peers
1158%
Downstreams
526%

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

Upstreams of AS213905
NetworkCountryRelationshipPathsVantage pts
AS203446SMARTNET Germany GmbHDEPeer648137
AS214481Wojciech CzapkowiczPLPeer337131
AS6517LAKENETWORKS USPeer4848

Prefixes

The largest blocks AS213905 originates, widest first.

Largest prefixes originated by AS213905
PrefixAddressesVisibility
2.27.118.0/2425675/76
31.77.127.0/2425676/76
191.217.212.0/2425675/76
193.23.209.0/2425676/76
193.23.221.0/2425676/76
2a01:ecc0:680::/441M × /6459/63
2a0b:4e07:45::/4865.5k × /6461/63
2a14:c380:152::/4865.5k × /6459/63
2a14:c380:155::/4865.5k × /6460/63
2a14:c380:a20::/4865.5k × /6463/63

Routing health

How AS213905'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

  • Valid53.3%8
  • Invalid0.0%0
  • No ROA46.7%7

Propagation

  • Globally propagated90% of full-feed peers or more80.0%12
  • Partially propagated40% to 90%20.0%3
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 10 prefixes

  • /441M × /6410.0%1
  • /4865.5k × /6490.0%9

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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