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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 v1.2.0 — 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 2026-07-27 06:09:13

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
0.0%
Fiber Services B.V. NL South Holland Rotterdam
81.30.64.0/20 4.1K
11.7%
Fiber Services B.V. NL North Holland Amsterdam
217.76.16.0/20 4.1K
6.6%
Fiber Services B.V. NL South Holland Rotterdam
31.177.32.0/21 2.0K
0.0%
Fiber Services B.V. NL North Holland Amsterdam
45.84.40.0/22 1.0K
99.0%
Fiber Services B.V. NL North Holland Amsterdam
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 South Holland Rotterdam
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 North Holland Amsterdam
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 North Holland Amsterdam
185.103.236.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Rotterdam
185.113.172.0/22 1.0K
0.0%
Fiber Services B.V. NL South Holland Maasdam
185.133.108.0/22 1.0K
24.8%
Fiber Services B.V. NL South Holland Rotterdam
185.192.146.0/23 512
0.0%
Fiber Services B.V. NL North Holland Amsterdam

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
185.192.144.0/22 9,952 2026-07-29 02:21:55
5.104.112.0/20 9,948 2026-07-29 02:21:54
31.177.32.0/21 9,836 2026-07-29 02:21:55
86.111.208.0/22 9,816 2026-07-29 02:21:54
45.92.224.0/22 9,762 2026-07-29 02:21:54
81.30.64.0/20 9,734 2026-07-29 02:21:59
185.23.140.0/22 9,718 2026-07-29 02:21:54
185.38.152.0/22 9,690 2026-07-29 02:21:55
185.103.236.0/22 9,606 2026-07-29 02:21:54
185.87.104.0/22 9,556 2026-07-29 02:21:54
185.133.108.0/22 9,452 2026-07-29 02:21:54
217.76.16.0/20 9,333 2026-07-29 02:21:59
185.82.192.0/22 8,790 2026-07-29 02:21:59
45.84.40.0/22 8,455 2026-07-29 02:21:59
45.91.56.0/22 7,762 2026-07-29 02:21:59
185.33.152.0/22 7,619 2026-07-29 02:21:59
185.113.172.0/22 7,578 2026-07-29 02:21:59
185.87.156.0/22 7,515 2026-07-29 02:21:59
185.72.160.0/22 7,481 2026-07-29 02:21:59
185.87.116.0/22 7,478 2026-07-29 02:21:59
185.70.236.0/22 7,402 2026-07-29 02:21:59
185.192.147.0/24 7,261 2026-07-29 02:21:22
185.236.16.0/22 2,419 2026-07-29 02:21:22

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: 2026-07-29 02:25:31 UTC
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