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AS41201DOLSAT sp. z o.o.

PolandRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS41201 (DOLSAT sp. z o.o.), an access network registered in Poland with RIPE NCC, originates 97 IPv4 prefixes covering 49.2k addresses. By IPv4 address space that makes it the 4,559th-largest of the 80,763 networks we see originating IPv4, and the 38th-largest of 2,109 in Poland. It is seen behind 6 upstream networks, most often AS174 (Cogent Communications, LLC) and AS6939 (Hurricane Electric LLC). 99% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 2% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

97

IPv6 prefixes

0

IPv4 addresses

49.2k

IPv6 /64s

0

Upstream graph

The networks AS41201 is seen behind, one and two hops out, drawn from real AS paths.

AS41201Toward the internet core
Upstream graph for AS41201: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS41201DOLSAT sp. z o.o.This networkAS174Cogent Communicat…AS6939Hurricane Electri…AS24482SG.GSAS49544i3D.net B.VAS137409GSL Networks Pty …AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS20130Depaul UniversityAS132337AxclusiveAS38623Metfone (Viettel …AS215859Hetzner Cloud - S…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS41201 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

18

adjacent networks

Upstreams
633%
Peers
1267%
Downstreams
00%

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

Upstreams of AS41201
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer2,96645
AS6939Hurricane Electric LLCUSPeer4765
AS24482SG.GSSGPeer2823
AS49544i3D.net B.VNLPeer961
AS137409GSL Networks Pty LTDAUPeer941
AS20804Exatel S.A.PLPeer9346

Prefixes

All 97

The largest blocks AS41201 originates, widest first.

Largest prefixes originated by AS41201
PrefixAddressesVisibility
87.199.0.0/1816.4k76/77
87.199.64.0/198.2k76/77
87.199.142.0/235121/77
87.199.0.0/2425641/77
87.199.1.0/2425641/77
87.199.2.0/2425641/77
87.199.3.0/2425641/77
87.199.4.0/2425641/77
87.199.5.0/2425641/77
87.199.6.0/2425641/77

Routing health

How AS41201'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

  • Valid99.0%96
  • Invalid0.0%0
  • No ROA1.0%1

Propagation

  • Globally propagated90% of full-feed peers or more2.1%2
  • Partially propagated40% to 90%96.9%94
  • Seen by few peersUnder 40%1.0%1

Prefix sizes

IPv4 — 97 prefixes

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.