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Autonomous System

AS51088

A2b Ip B.v.

Announced IPs
34,048
CIDR prefixes
44
ASN
AS51088

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.

53/100
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 AS51088 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)
104.152.52.0/22 AS14987, AS51088 2026-07-24 09:08:47

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 20-50Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Selective
IRR record RIPE::AS51088:AS-A2B

Present at 4 internet exchanges: AMS-IX, Speed-IX: SPEED-IX, Frys-IX, INTERIX

Web3 footprint

AS51088 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

AS51088 — global IP footprint

Cities where AS51088 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
46.244.0.0/20 4.1K
89.6%
A2b Ip B.v. NL Limburg Maastricht
31.134.200.0/21 2.0K
8.1%
A2b Ip B.v. NL North Holland Amsterdam
46.244.24.0/21 2.0K
11.4%
A2b Ip B.v. NL North Holland Amsterdam
46.244.120.0/21 2.0K
48.3%
A2b Ip B.v. NL South Holland The Hague
93.93.120.0/21 2.0K
0.0%
A2b Ip B.v. NL
178.249.152.0/21 2.0K
91.9%
A2b Ip B.v. NL North Holland Amsterdam
46.244.20.0/22 1.0K
89.8%
A2b Ip B.v. NL North Holland Amsterdam
46.244.100.0/22 1.0K
0.4%
A2b Ip B.v. NL
46.244.104.0/22 1.0K
2.3%
A2b Ip B.v. NL North Brabant Eindhoven
185.34.220.0/22 1.0K
6.3%
A2b Ip B.v. NL
185.41.124.0/22 1.0K
1.7%
A2b Ip B.v. NL
185.44.244.0/22 1.0K
1.1%
A2b Ip B.v. NL
185.63.244.0/22 1.0K
0.5%
A2b Ip B.v. NL North Holland Amsterdam
185.205.52.0/22 1.0K
3.2%
A2b Ip B.v. NL North Holland Amsterdam
185.225.220.0/22 1.0K
0.0%
A2b Ip B.v. NL
185.240.112.0/22 1.0K
0.0%
A2b Ip B.v. NL
192.166.96.0/22 1.0K
11.3%
A2b Ip B.v. NL
46.244.16.0/23 512
93.6%
A2b Ip B.v. NL North Holland Amsterdam
46.244.112.0/23 512
0.0%
A2b Ip B.v. NL South Holland The Hague
185.30.204.0/23 512
100.0%
A2b Ip B.v. NL
185.37.4.0/23 512
100.0%
A2b Ip B.v. NL
185.51.52.0/23 512
1.0%
A2b Ip B.v. NL
193.169.108.0/23 512
0.0%
A2b Ip B.v. NL
5.10.192.0/24 256
1.6%
A2b Ip B.v. NL North Holland Amsterdam
31.41.255.0/24 256
0.0%
A2b Ip B.v. NL
45.85.191.0/24 256
3.5%
A2b Ip B.v. NL North Holland Amsterdam
46.175.131.0/24 256
10.2%
A2b Ip B.v. NL North Holland Amsterdam
62.3.55.0/24 256
0.0%
A2b Ip B.v. NL
62.68.84.0/24 256
3.9%
A2b Ip B.v. NL
91.213.13.0/24 256
28.9%
A2b Ip B.v. NL
93.190.124.0/24 256
24.2%
A2b Ip B.v. NL
146.19.97.0/24 256
0.0%
A2b Ip B.v. NL North Brabant Boxmeer
178.211.151.0/24 256
1.6%
A2b Ip B.v. NL
185.30.207.0/24 256
0.0%
A2b Ip B.v. NL
185.37.6.0/24 256
100.0%
A2b Ip B.v. NL
185.40.254.0/24 256
99.6%
A2b Ip B.v. NL
185.46.173.0/24 256
2.3%
A2b Ip B.v. NL North Holland Amsterdam
185.217.118.0/24 256
2.3%
A2b Ip B.v. NL
185.218.207.0/24 256
23.8%
A2b Ip B.v. NL
188.95.143.0/24 256
99.2%
A2b Ip B.v. NL
193.39.250.0/24 256
98.8%
A2b Ip B.v. NL
193.108.238.0/24 256
0.4%
A2b Ip B.v. NL
193.110.189.0/24 256
3.1%
A2b Ip B.v. NL
212.24.126.0/24 256
0.0%
A2b Ip B.v. NL

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS51088 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
188.95.143.0/24 7,059 2026-07-24 23:07:40
5.10.192.0/24 4,962 2026-07-24 23:32:22
46.244.104.0/22 4,903 2026-07-24 23:32:22
31.41.255.0/24 4,875 2026-07-24 23:32:22
185.218.207.0/24 4,826 2026-07-24 23:32:20
46.244.8.0/22 4,801 2026-07-24 23:32:22
185.40.254.0/24 4,791 2026-07-24 23:32:35
62.68.84.0/24 4,763 2026-07-24 23:32:22
185.51.52.0/23 4,761 2026-07-24 23:32:22
193.39.250.0/24 4,754 2026-07-24 23:32:22
45.85.191.0/24 4,753 2026-07-24 23:32:22
46.244.126.0/24 4,749 2026-07-24 23:32:22
31.134.200.0/21 4,749 2026-07-24 23:32:22
46.244.29.0/24 4,748 2026-07-24 23:32:22
46.244.30.0/24 4,747 2026-07-24 23:32:22
46.244.22.0/24 4,744 2026-07-24 23:32:22
46.175.131.0/24 4,743 2026-07-24 23:32:22
46.244.0.0/21 4,743 2026-07-24 23:32:22
46.244.100.0/22 4,743 2026-07-24 23:32:22
185.63.244.0/22 4,737 2026-07-24 23:32:22
46.244.28.0/24 4,736 2026-07-24 23:32:22
46.244.31.0/24 4,734 2026-07-24 23:32:22
46.244.23.0/24 4,721 2026-07-24 23:32:22
46.244.122.0/23 4,720 2026-07-24 23:32:22
46.244.20.0/24 4,718 2026-07-24 23:32:22
46.244.127.0/24 4,717 2026-07-24 23:32:22
62.3.55.0/24 4,716 2026-07-24 23:32:22
46.244.120.0/23 4,713 2026-07-24 23:32:22
91.213.13.0/24 4,711 2026-07-24 23:32:22
46.244.21.0/24 4,704 2026-07-24 23:32:22
46.244.24.0/22 4,702 2026-07-24 23:32:22
46.244.124.0/23 4,696 2026-07-24 23:32:22
46.244.14.0/23 4,694 2026-07-24 23:32:22
46.244.12.0/23 4,693 2026-07-24 23:32:22
46.244.112.0/23 4,688 2026-07-24 23:32:22
185.37.4.0/23 4,684 2026-07-24 23:32:22
46.244.16.0/23 4,683 2026-07-24 23:32:22
193.108.238.0/24 4,678 2026-07-24 23:32:22
185.37.6.0/24 4,668 2026-07-24 23:32:22
193.110.189.0/24 4,632 2026-07-24 23:32:22
93.190.124.0/24 4,623 2026-07-24 23:32:22
185.217.118.0/24 4,622 2026-07-24 23:32:22
192.166.96.0/22 4,614 2026-07-24 23:32:22
185.41.124.0/22 4,607 2026-07-24 23:32:22
93.93.120.0/21 4,604 2026-07-24 23:32:35
212.24.126.0/24 4,598 2026-07-24 23:32:22
146.19.97.0/24 4,597 2026-07-24 23:32:22
178.249.152.0/21 4,589 2026-07-24 23:32:22
185.46.173.0/24 4,587 2026-07-24 23:32:22
185.205.52.0/22 4,584 2026-07-24 23:32:22

Showing top 50 of 75 announced prefixes by sample volume.

Frequently Asked Questions

What is AS51088?

AS51088 is an Autonomous System Number assigned to A2b Ip 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 AS51088 announce?

AS51088 announces 34.0K IPv4 addresses distributed across 44 routed CIDR prefixes. The network is registered in The Netherlands.

Who operates AS51088?

AS51088 is operated by A2b Ip 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 AS51088 registered in?

AS51088 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: 2026-07-25 00:10:32 UTC
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