subnet.im

AS201633Perfect Sense AB

SwedenRegistryRIPE NCC

As of 26th September 2026, AS201633 (Perfect Sense AB), a network registered in Sweden with RIPE NCC, originates 2 IPv4 prefixes covering 512 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 48,553rd-largest of the 79,516 networks we see originating IPv4, and the 418th-largest of 642 in Sweden. It is seen behind 1 upstream network, most often AS35661 (VIRTUA SYSTEMS SAS). 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

2

IPv6 prefixes

2

IPv4 addresses

512

IPv6 /64s

131k

Upstream graph

The networks AS201633 is seen behind, one and two hops out, drawn from real AS paths.

AS201633Toward the internet core
Upstream graph for AS201633: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS201633Perfect Sense ABThis networkAS35661VIRTUA SYSTEMS SASAS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS201633 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS201633
NetworkCountryRelationshipPathsVantage pts
AS35661VIRTUA SYSTEMS SASFRPeer288144

Prefixes

The largest blocks AS201633 originates, widest first.

Largest prefixes originated by AS201633
PrefixAddressesVisibility
193.33.156.0/2425680/81
206.225.17.0/2425680/81
2a12:d4c0:b00b::/4865.5k × /6464/64
2a12:d4c0:beef::/4865.5k × /6464/64

Routing health

How AS201633'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS201633 started or stopped in this period.

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