subnet.im

AS57112Fiber Services B.V.

NetherlandsRegistryRIPE NCC

As of 11th November 2026, AS57112 (Fiber Services B.V.), a network registered in the Netherlands with RIPE NCC, originates 22 IPv4 prefixes covering 32k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 5,616th-largest of the 80,743 networks we see originating IPv4, and the 83rd-largest of 1,042 in the Netherlands. It is seen behind 29 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC), and in front of 3 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

22

IPv6 prefixes

3

IPv4 addresses

32k

IPv6 /64s

103B

Upstream graph

The networks AS57112 is seen behind, one and two hops out, drawn from real AS paths.

AS57112Toward the internet core
Upstream graph for AS57112: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57112Fiber Services B.…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS8298IPng Networks GmbHAS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS20130Depaul UniversityAS132337AxclusiveAS25091IP-Max SAAS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS57112 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

188

adjacent networks

Upstreams
2915%
Peers
15683%
Downstreams
32%

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

Upstreams of AS57112
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer95952
AS174Cogent Communications, LLCUSPeer44955
AS6939Hurricane Electric LLCUSPeer9116
AS18106Viewqwest Pte LtdSGPeer482
AS24940Hetzner Online GmbHDEPeer282
AS22356Durand do Brasil LtdaBRPeer282
AS25091IP-Max SACHPeer282
AS8298IPng Networks GmbHCHPeer282
AS49544i3D.net B.VNLPeer282
AS24482SG.GSSGPeer282

Prefixes

The largest blocks AS57112 originates, widest first.

Largest prefixes originated by AS57112
PrefixAddressesVisibility
5.104.112.0/204.1k75/76
81.30.64.0/204.1k75/76
217.76.16.0/204.1k75/76
31.177.32.0/212k75/76
45.84.40.0/221k75/76
45.91.56.0/221k75/76
45.92.224.0/221k75/76
86.111.208.0/221k75/76
185.23.140.0/221k75/76
185.33.152.0/221k75/76

Routing health

How AS57112'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%25
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%25
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 22 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /64100.0%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS57112 started or stopped in this period.

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