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AS57608FIBO SA

PolandRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS57608 (FIBO SA), an access network registered in Poland with RIPE NCC, originates 27 IPv4 prefixes covering 13.6k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 9,078th-largest of the 80,747 networks we see originating IPv4, and the 122nd-largest of 2,109 in Poland. It is seen behind 8 upstream networks, most often AS12912 (T-Mobile Polska S.A.) and AS20804 (Exatel S.A.), and in front of 12 downstream networks. 97% of its announcements have 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

27

IPv6 prefixes

2

IPv4 addresses

13.6k

IPv6 /64s

68.7B

Upstream graph

The networks AS57608 is seen behind, one and two hops out, drawn from real AS paths.

AS57608Toward the internet core
Upstream graph for AS57608: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57608FIBO SAThis networkAS12912T-Mobile Polska S…AS20804Exatel S.A.AS29535Orange Polska Spo…AS42927S-NET Sp. z o.o.AS49544i3D.net B.VAS1299Arelion (fka. Tel…AS33891Core-Backbone GmbHAS6453TATA Communicatio…AS6461Zayo BandwidthAS6939Hurricane Electri…AS9002RETN LimitedAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS57608 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

45

adjacent networks

Upstreams
818%
Peers
2556%
Downstreams
1227%

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

Upstreams of AS57608
NetworkCountryRelationshipPathsVantage pts
AS12912T-Mobile Polska S.A.PLPeer1,11790
AS20804Exatel S.A.PLPeer96157
AS42927S-NET Sp. z o.o.PLPeer49024
AS29535Orange Polska Spolka AkcyjnaPLPeer29665
AS49544i3D.net B.VNLPeer332
AS24940Hetzner Online GmbHDEPeer322
AS3303Swisscom (Schweiz) AGCHPeer301
AS6939Hurricane Electric LLCUSPeer44

Prefixes

All 29

The largest blocks AS57608 originates, widest first.

Largest prefixes originated by AS57608
PrefixAddressesVisibility
84.205.172.0/221k76/76
91.233.112.0/221k76/76
185.46.168.0/221k76/76
185.238.120.0/221k76/76
193.32.180.0/221k76/76
193.203.56.0/221k76/76
194.177.4.0/221k76/76
195.225.136.0/221k76/76
176.102.184.0/2351276/76
194.88.214.0/2351276/76

Routing health

How AS57608'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

  • Valid96.6%28
  • Invalid0.0%0
  • No ROA3.4%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%29
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 27 prefixes

IPv6 — 2 prefixes

  • /2934.4B × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn84.205.168.0/2427th Oct 2026
  • Announced84.205.168.0/2426th Oct 2026
  • Withdrawn84.205.168.0/2425th Oct 2026

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