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Autonomous System

AS57112

Fiber Services B.V.

Announced IPs
31,232
CIDR prefixes
21
ASN
AS57112

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

58/100
Caution
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS57112 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
185.236.16.0/22 AS15830, AS57112 2026-11-13 18:09:11

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 50-100Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-F2X

Present at 6 internet exchanges: AMS-IX, NL-ix: Main, Speed-IX: SPEED-IX, Equinix Amsterdam: Equinix IX - AM Metro, Frys-IX, INTERIX

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
5.104.112.0/20 4.1K
98.7%
Fiber Services B.V. NL South Holland Rotterdam
81.30.64.0/20 4.1K
12.5%
Fiber Services B.V. NL North Holland Amsterdam
217.76.16.0/20 4.1K
6.5%
Fiber Services B.V. NL North Holland Amsterdam
31.177.32.0/21 2.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
45.84.40.0/22 1.0K
98.4%
Fiber Services B.V. NL South Holland Rotterdam
45.91.56.0/22 1.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
45.92.224.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
86.111.208.0/22 1.0K
0.1%
Fiber Services B.V. NL North Holland Amsterdam
185.23.140.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.33.152.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.38.152.0/22 1.0K
0.3%
Fiber Services B.V. NL North Holland Amsterdam
185.70.236.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.72.160.0/22 1.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
185.82.192.0/22 1.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
185.87.104.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.87.116.0/22 1.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
185.87.156.0/22 1.0K
0.0%
Fiber Services B.V. NL — —
185.103.236.0/22 1.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
185.113.172.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.133.108.0/22 1.0K
24.9%
Fiber Services B.V. NL South Holland Rotterdam
185.192.146.0/23 512
0.0%
Fiber Services B.V. NL — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS57112 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
5.104.112.0/20 55,234 2026-11-13 18:04:02
45.92.224.0/22 50,734 2026-11-13 18:04:02
31.177.32.0/21 50,603 2026-11-13 18:04:04
185.192.144.0/22 50,399 2026-11-13 18:04:04
86.111.208.0/22 50,078 2026-11-13 18:04:02
185.87.104.0/22 50,041 2026-11-13 18:04:02
185.23.140.0/22 49,946 2026-11-13 18:04:02
81.30.64.0/20 49,861 2026-11-13 18:04:02
185.38.152.0/22 49,693 2026-11-13 18:04:04
185.103.236.0/22 49,676 2026-11-13 18:04:02
185.133.108.0/22 49,553 2026-11-13 18:04:02
217.76.16.0/20 48,743 2026-11-13 18:04:02
185.82.192.0/22 47,426 2026-11-13 18:04:02
45.84.40.0/22 46,666 2026-11-13 18:04:02
45.91.56.0/22 44,120 2026-11-13 18:04:02
185.33.152.0/22 43,882 2026-11-13 18:04:02
185.87.156.0/22 43,334 2026-11-13 18:04:02
185.113.172.0/22 43,078 2026-11-13 18:04:02
185.87.116.0/22 43,002 2026-11-13 18:04:02
185.72.160.0/22 42,995 2026-11-13 18:04:02
185.70.236.0/22 42,914 2026-11-13 18:04:02
185.192.147.0/24 35,467 2026-11-13 18:04:04
185.236.16.0/22 22,823 2026-11-13 18:04:04
103.109.235.0/24 4 2026-09-27 21:34:58

Frequently Asked Questions

What is AS57112?

AS57112 is an Autonomous System Number assigned to Fiber Services B.V.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS57112 announce?

AS57112 announces 31.2K IPv4 addresses distributed across 21 routed CIDR prefixes. The network is registered in The Netherlands.

Who operates AS57112?

AS57112 is operated by Fiber Services B.V.. The organization is based in The Netherlands. You can view all IP ranges and related ASNs on the organization page.

What country is AS57112 registered in?

AS57112 is registered in The Netherlands. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 18:09:05 UTC
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