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Autonomous System

AS41230

ASK4 Limited

Announced IPs
88,320
CIDR prefixes
27
ASN
AS41230

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type NSP
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Selective
IRR record AS-ASK4

Present at 6 internet exchanges: LINX LON1: Main, IXLeeds, LINX Manchester, LONAP: LON0, MegaIX Dusseldorf, MegaIX Frankfurt

AS41230 — global IP footprint

Cities where AS41230 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
31.205.0.0/16 65.5K
55.0%
ASK4 Limited GB England Sheffield
31.205.128.0/17 32.8K
0.0%
ASK4 Limited GB England Sheffield
31.205.0.0/18 16.4K
0.0%
ASK4 Limited GB England Barnsley
31.205.64.0/19 8.2K
0.0%
ASK4 Limited GB England Camden
213.143.0.0/19 8.2K
97.7%
ASK4 Limited GB England Sheffield
31.205.112.0/20 4.1K
0.0%
ASK4 Limited GB England Lewisham
78.109.176.0/20 4.1K
98.7%
ASK4 Limited GB England Tower Hamlets
81.23.48.0/20 4.1K
93.6%
ASK4 Limited GB England Sheffield
31.205.96.0/21 2.0K
0.0%
ASK4 Limited GB England Wembley
81.23.48.0/21 2.0K
0.0%
ASK4 Limited GB
31.205.108.0/22 1.0K
0.0%
ASK4 Limited GB England Islington
45.81.120.0/22 1.0K
11.7%
ASK4 Limited GB
45.154.248.0/22 1.0K
73.4%
ASK4 Limited GB
81.23.56.0/22 1.0K
0.0%
ASK4 Limited GB
185.134.128.0/22 1.0K
96.5%
ASK4 Limited GB
185.134.136.0/22 1.0K
81.6%
ASK4 Limited DE State of Berlin Berlin
185.134.144.0/22 1.0K
0.0%
ASK4 Limited GB
185.198.228.0/22 1.0K
34.0%
ASK4 Limited GB
31.205.106.0/23 512
0.0%
ASK4 Limited GB England Islington
45.154.250.0/23 512
0.0%
ASK4 Limited GB
81.23.60.0/23 512
0.0%
ASK4 Limited GB
185.134.146.0/23 512
0.0%
ASK4 Limited IE Leinster Dublin
185.198.230.0/23 512
0.0%
ASK4 Limited GB
31.205.105.0/24 256
0.0%
ASK4 Limited GB England Lancaster
45.81.120.0/24 256
0.0%
ASK4 Limited DE
45.81.121.0/24 256
0.0%
ASK4 Limited GB
45.81.123.0/24 256
0.0%
ASK4 Limited GB
81.23.63.0/24 256
0.0%
ASK4 Limited GB
176.119.145.0/24 256
18.8%
ASK4 Limited GB
185.134.128.0/24 256
0.0%
ASK4 Limited DE North Rhine-Westphalia Münster
185.134.137.0/24 256
0.0%
ASK4 Limited DE Hesse Frankfurt am Main
31.205.104.128/25 128
0.0%
ASK4 Limited GB England Loughborough
45.81.122.128/25 128
0.0%
ASK4 Limited GB
45.154.249.128/25 128
0.0%
ASK4 Limited GB
81.23.62.0/25 128
0.0%
ASK4 Limited GB
176.119.145.0/25 128
0.0%
ASK4 Limited GB
185.134.129.128/25 128
0.0%
ASK4 Limited DE Brandenburg Potsdam
185.134.136.128/25 128
0.0%
ASK4 Limited DE North Rhine-Westphalia Löhne
185.134.139.128/25 128
0.0%
ASK4 Limited DE Lower Saxony Göttingen
185.198.228.0/25 128
0.0%
ASK4 Limited IE Leinster Dublin
185.198.229.128/25 128
0.0%
ASK4 Limited GB
31.205.104.0/26 64
0.0%
ASK4 Limited GB England Loughborough
45.81.122.64/26 64
0.0%
ASK4 Limited GB
45.154.248.64/26 64
0.0%
ASK4 Limited DE State of Berlin Berlin
45.154.248.128/26 64
0.0%
ASK4 Limited DE State of Berlin Berlin
45.154.249.64/26 64
0.0%
ASK4 Limited GB
81.23.62.192/26 64
0.0%
ASK4 Limited GB
176.119.145.128/26 64
0.0%
ASK4 Limited GB
176.119.145.192/26 64
0.0%
ASK4 Limited IT
185.134.129.0/26 64
0.0%
ASK4 Limited DE Saxony Leipzig
185.134.130.0/26 64
0.0%
ASK4 Limited GB
185.134.130.64/26 64
0.0%
ASK4 Limited DE Rheinland-Pfalz Kaiserslautern
185.134.130.192/26 64
0.0%
ASK4 Limited DE
185.134.131.64/26 64
0.0%
ASK4 Limited DE
185.134.131.128/26 64
0.0%
ASK4 Limited DE
185.134.136.0/26 64
0.0%
ASK4 Limited DE North Rhine-Westphalia Löhne
185.134.138.64/26 64
0.0%
ASK4 Limited GB
185.134.138.192/26 64
0.0%
ASK4 Limited DE Lower Saxony Hanover
185.134.139.64/26 64
0.0%
ASK4 Limited DE Lower Saxony Göttingen
185.134.144.0/26 64
0.0%
ASK4 Limited IE
185.134.145.64/26 64
0.0%
ASK4 Limited IE Munster Cork
185.134.145.192/26 64
0.0%
ASK4 Limited IE
185.198.228.128/26 64
0.0%
ASK4 Limited IE Leinster Dublin
185.198.229.64/26 64
0.0%
ASK4 Limited IE
31.205.104.64/27 32
0.0%
ASK4 Limited GB England Loughborough
45.81.122.0/27 32
0.0%
ASK4 Limited GB
45.154.248.224/27 32
0.0%
ASK4 Limited GB
45.154.249.32/27 32
0.0%
ASK4 Limited DE Rheinland-Pfalz Ludwigshafen am Rhein
81.23.62.160/27 32
0.0%
ASK4 Limited GB
185.134.129.96/27 32
0.0%
ASK4 Limited DE
185.134.130.160/27 32
0.0%
ASK4 Limited DE
185.134.131.0/27 32
0.0%
ASK4 Limited DE
185.134.136.96/27 32
0.0%
ASK4 Limited GB
185.134.138.128/27 32
0.0%
ASK4 Limited DE Saarland Saarbrücken
185.134.139.32/27 32
0.0%
ASK4 Limited DE Bremen Bremen
185.134.144.192/27 32
0.0%
ASK4 Limited IE
185.134.145.32/27 32
0.0%
ASK4 Limited IE Munster Cork
185.198.228.192/27 32
0.0%
ASK4 Limited IE
185.198.229.32/27 32
0.0%
ASK4 Limited GB
31.205.104.96/28 16
0.0%
ASK4 Limited GB England Loughborough
45.81.122.48/28 16
0.0%
ASK4 Limited GB
45.154.248.0/28 16
0.0%
ASK4 Limited DE State of Berlin Berlin
45.154.248.48/28 16
0.0%
ASK4 Limited DE State of Berlin Berlin
45.154.248.208/28 16
0.0%
ASK4 Limited GB
45.154.249.0/28 16
0.0%
ASK4 Limited DE
81.23.62.128/28 16
0.0%
ASK4 Limited GB
185.134.129.64/28 16
0.0%
ASK4 Limited DE
185.134.130.128/28 16
0.0%
ASK4 Limited GB
185.134.130.144/28 16
0.0%
ASK4 Limited DE
185.134.131.48/28 16
0.0%
ASK4 Limited DE
185.134.131.192/28 16
0.0%
ASK4 Limited DE
185.134.131.240/28 16
0.0%
ASK4 Limited DE
185.134.136.64/28 16
0.0%
ASK4 Limited DE North Rhine-Westphalia Löhne
185.134.138.0/28 16
0.0%
ASK4 Limited DE
185.134.138.16/28 16
0.0%
ASK4 Limited GB
185.134.138.48/28 16
0.0%
ASK4 Limited DE
185.134.138.160/28 16
0.0%
ASK4 Limited DE Saarland Saarbrücken
185.134.138.176/28 16
0.0%
ASK4 Limited GB
185.134.139.0/28 16
0.0%
ASK4 Limited DE
185.134.139.16/28 16
0.0%
ASK4 Limited GB

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS41230 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
31.205.0.0/16 12,780 2026-09-11 00:29:10
78.109.176.0/20 12,505 2026-09-11 00:29:10
81.23.48.0/20 12,433 2026-09-11 00:29:10
213.143.0.0/19 12,176 2026-09-11 00:30:07
185.134.144.0/22 12,122 2026-09-11 00:30:07
185.198.228.0/22 12,118 2026-09-11 00:30:07
45.81.120.0/22 9,721 2026-09-11 00:34:07
45.154.248.0/22 9,699 2026-09-11 00:34:07
176.119.145.0/24 9,423 2026-09-11 00:34:36
185.134.138.0/24 9,363 2026-09-11 00:34:36
185.134.128.0/22 9,350 2026-09-11 00:34:36
185.134.139.0/24 9,348 2026-09-11 00:34:36
185.134.136.0/23 9,339 2026-09-11 00:34:36
185.134.136.0/22 6,787 2026-09-11 00:34:36
31.205.64.0/18 3,643 2026-09-10 22:33:38
31.205.192.0/18 3,374 2026-09-10 22:33:38

Frequently Asked Questions

What is AS41230?

AS41230 is an Autonomous System Number assigned to ASK4 Limited. 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 AS41230 announce?

AS41230 announces 88.3K IPv4 addresses distributed across 27 routed CIDR prefixes. The network is registered in United Kingdom.

Who operates AS41230?

AS41230 is operated by ASK4 Limited. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.

What country is AS41230 registered in?

AS41230 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-11 00:39:06 UTC
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