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Autonomous System

AS24971

MasterDC s.r.o.

Announced IPs
58,112
CIDR prefixes
31
ASN
AS24971

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 Content
Geographic scope Europe
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS24971:AS-MASTERCZ

Present at 5 internet exchanges: NIX.CZ: Public peering VLAN, Peering.cz, NIX.SK, BR-IX: PEER, NIX.CZ FENIX: FENIX VLAN

Web3 footprint

AS24971 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.

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
77.93.192.0/19 8.2K
85.9%
MasterDC s.r.o. CZ Prague Prague
83.167.224.0/19 8.2K
90.2%
MasterDC s.r.o. CZ
89.185.224.0/19 8.2K
85.8%
MasterDC s.r.o. CZ South Moravian Brno
80.79.16.0/20 4.1K
89.1%
MasterDC s.r.o. CZ
81.31.32.0/20 4.1K
84.6%
MasterDC s.r.o. CZ Prague Prague
178.238.32.0/20 4.1K
91.3%
MasterDC s.r.o. CZ
37.205.8.0/21 2.0K
40.3%
MasterDC s.r.o. CZ South Moravian Brno
85.118.128.0/21 2.0K
85.1%
MasterDC s.r.o. CZ
149.62.144.0/21 2.0K
90.5%
MasterDC s.r.o. CZ
5.180.200.0/22 1.0K
15.2%
MasterDC s.r.o. CZ
91.214.192.0/22 1.0K
97.6%
MasterDC s.r.o. CZ
91.226.216.0/22 1.0K
1.8%
MasterDC s.r.o. CZ
185.8.164.0/22 1.0K
18.8%
MasterDC s.r.o. CZ
185.25.184.0/22 1.0K
96.2%
MasterDC s.r.o. CZ
185.58.40.0/22 1.0K
98.9%
MasterDC s.r.o. CZ
185.85.164.0/22 1.0K
99.3%
MasterDC s.r.o. CZ
185.145.160.0/22 1.0K
100.0%
MasterDC s.r.o. CZ
185.239.216.0/22 1.0K
0.0%
MasterDC s.r.o. CZ
194.145.180.0/22 1.0K
99.4%
MasterDC s.r.o. CZ
195.140.252.0/22 1.0K
98.4%
MasterDC s.r.o. CZ
176.227.168.0/23 512
32.6%
MasterDC s.r.o. IT
188.213.234.0/23 512
92.0%
MasterDC s.r.o. CZ
188.215.18.0/23 512
99.6%
MasterDC s.r.o. CZ
193.169.160.0/23 512
0.2%
MasterDC s.r.o. DM
37.140.220.0/24 256
0.0%
MasterDC s.r.o. CZ
83.223.52.0/24 256
10.5%
MasterDC s.r.o. NL
91.213.160.0/24 256
0.0%
MasterDC s.r.o. CZ
91.216.179.0/24 256
0.0%
MasterDC s.r.o. CZ
92.63.56.0/24 256
14.8%
MasterDC s.r.o. CZ
130.193.16.0/24 256
100.0%
MasterDC s.r.o. CZ
185.32.160.0/24 256
87.9%
MasterDC s.r.o. CZ

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS24971 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
5.180.200.0/22 25,238 2026-09-11 00:34:38
37.140.220.0/24 23,734 2026-09-11 00:34:38
37.205.12.0/22 23,580 2026-09-11 00:34:38
37.205.8.0/22 23,572 2026-09-11 00:34:38
80.79.16.0/20 23,357 2026-09-11 00:34:04
77.93.192.0/19 23,338 2026-09-11 00:34:04
91.226.216.0/22 23,336 2026-09-11 00:34:04
83.167.224.0/19 23,297 2026-09-11 00:34:04
81.31.32.0/20 23,271 2026-09-11 00:34:04
85.118.128.0/21 23,267 2026-09-11 00:34:04
91.216.179.0/24 23,169 2026-09-11 00:34:04
91.214.192.0/22 23,164 2026-09-11 00:34:04
91.213.160.0/24 23,142 2026-09-11 00:34:04
92.63.56.0/24 23,110 2026-09-11 00:34:04
83.223.52.0/24 22,821 2026-09-11 00:34:04
130.193.16.0/24 21,317 2026-09-11 00:34:04
149.62.144.0/21 20,951 2026-09-11 00:34:04
176.227.168.0/23 20,175 2026-09-11 00:34:04
178.238.32.0/20 19,985 2026-09-11 00:34:04
185.32.160.0/22 19,960 2026-09-11 00:34:04
185.25.184.0/22 19,955 2026-09-11 00:34:04
185.8.166.0/23 19,945 2026-09-11 00:34:04
185.8.164.0/23 19,938 2026-09-11 00:34:04
185.58.40.0/22 19,907 2026-09-11 00:34:04
185.85.164.0/22 19,773 2026-09-11 00:34:04
185.145.160.0/22 19,748 2026-09-11 00:34:04
185.239.216.0/22 19,511 2026-09-11 00:34:04
188.215.18.0/23 19,416 2026-09-11 00:34:04
188.213.234.0/23 19,372 2026-09-11 00:34:04
193.169.160.0/23 19,011 2026-09-11 00:34:04
194.145.180.0/22 18,922 2026-09-11 00:34:04
195.140.252.0/22 18,817 2026-09-11 00:34:04
89.185.224.0/19 11,844 2026-09-11 00:34:04

Frequently Asked Questions

What is AS24971?

AS24971 is an Autonomous System Number assigned to MasterDC s.r.o.. 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 AS24971 announce?

AS24971 announces 58.1K IPv4 addresses distributed across 31 routed CIDR prefixes. The network is registered in Czechia.

Who operates AS24971?

AS24971 is operated by MasterDC s.r.o.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.

What country is AS24971 registered in?

AS24971 is registered in Czechia. 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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