subnet.im

AS8637SpainWISP, S.L.

SpainRegistryRIPE NCCTypeCarrier

As of 27th September 2026, AS8637 (SpainWISP, S.L.), a transit carrier registered in Spain with RIPE NCC, originates 4 IPv4 prefixes covering 1k addresses and 4 IPv6 prefixes. By IPv4 address space that makes it the 35,811th-largest of the 79,525 networks we see originating IPv4, and the 559th-largest of 926 in Spain. It is seen behind 43 upstream networks, most often AS3356 (Lumen (Level 3)) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 23 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

4

IPv6 prefixes

4

IPv4 addresses

1k

IPv6 /64s

262k

Upstream graph

The networks AS8637 is seen behind, one and two hops out, drawn from real AS paths.

AS8637Toward the internet core
Upstream graph for AS8637: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS8637SpainWISP, S.L.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS32590Valve CorporationAS38880Micron21 Datacent…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS6939Hurricane Electri…AS9002RETN Limited

Networks observed one and two hops upstream of AS8637 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

292

adjacent networks

Upstreams
4315%
Peers
22677%
Downstreams
238%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 43.

Upstreams of AS8637
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer3,75738
AS1299Arelion (fka. Telia Carrier)SEPeer3,31050
AS174Cogent Communications, LLCUSPeer1,36523
AS38880Micron21 Datacentre Pty LtdAUPeer7732
AS32590Valve CorporationUSPeer7534
AS7713PT Telkom Indonesia TbkIDPeer6273
AS6939Hurricane Electric LLCUSPeer46610
AS8888xTom Pty LtdAUPeer4462
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer4462
AS213151Christian ElsenDEPeer4462

Prefixes

The largest blocks AS8637 originates, widest first.

Largest prefixes originated by AS8637
PrefixAddressesVisibility
5.180.228.0/2425680/81
5.180.229.0/2425680/81
5.180.230.0/2425680/81
5.180.231.0/2425680/81
2a0b:c800:1::/4865.5k × /6463/64
2a0b:c800:2::/4865.5k × /6463/64
2a0b:c800:3::/4865.5k × /6463/64
2a0b:c800:4::/4865.5k × /6463/64

Routing health

How AS8637'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%8
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%8
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 4 prefixes

  • /4865.5k × /64100.0%4

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS8637 started or stopped in this period.

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