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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 v1.2.1 — 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
92.1%
MasterDC s.r.o. CZ Prague Prague
83.167.224.0/19 8.2K
95.9%
MasterDC s.r.o. CZ — —
89.185.224.0/19 8.2K
86.2%
MasterDC s.r.o. CZ South Moravian Brno
80.79.16.0/20 4.1K
95.1%
MasterDC s.r.o. CZ — —
81.31.32.0/20 4.1K
85.7%
MasterDC s.r.o. CZ South Moravian Brno
178.238.32.0/20 4.1K
91.4%
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
91.7%
MasterDC s.r.o. CZ — —
149.62.144.0/21 2.0K
98.7%
MasterDC s.r.o. CZ — —
5.180.200.0/22 1.0K
15.9%
MasterDC s.r.o. CZ — —
91.214.192.0/22 1.0K
99.6%
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
18.3%
MasterDC s.r.o. CZ — —
185.25.184.0/22 1.0K
99.7%
MasterDC s.r.o. CZ — —
185.58.40.0/22 1.0K
99.0%
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
97.9%
MasterDC s.r.o. CZ — —
185.239.216.0/22 1.0K
3.3%
MasterDC s.r.o. CZ — —
194.145.180.0/22 1.0K
99.5%
MasterDC s.r.o. CZ — —
195.140.252.0/22 1.0K
99.9%
MasterDC s.r.o. CZ — —
176.227.168.0/23 512
32.8%
MasterDC s.r.o. IT — —
188.213.234.0/23 512
99.8%
MasterDC s.r.o. CZ — —
188.215.18.0/23 512
100.0%
MasterDC s.r.o. CZ — —
193.169.160.0/23 512
56.4%
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
21.5%
MasterDC s.r.o. CZ — —
91.216.179.0/24 256
99.6%
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
98.8%
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 35,007 2026-09-30 23:04:38
37.140.220.0/24 33,534 2026-09-30 23:04:38
37.205.12.0/22 33,345 2026-09-30 23:04:38
37.205.8.0/22 33,341 2026-09-30 23:04:38
77.93.192.0/19 33,024 2026-09-30 23:04:38
80.79.16.0/20 33,023 2026-09-30 23:04:38
91.226.216.0/22 32,971 2026-09-30 23:04:38
83.167.224.0/19 32,929 2026-09-30 23:04:38
81.31.32.0/20 32,928 2026-09-30 23:04:38
85.118.128.0/21 32,891 2026-09-30 23:04:38
91.214.192.0/22 32,742 2026-09-30 23:04:38
91.216.179.0/24 32,725 2026-09-30 23:04:38
91.213.160.0/24 32,684 2026-09-30 23:04:38
92.63.56.0/24 32,630 2026-09-30 23:04:38
83.223.52.0/24 32,060 2026-09-30 23:01:11
130.193.16.0/24 30,663 2026-09-30 23:04:38
149.62.144.0/21 30,228 2026-09-30 23:04:38
176.227.168.0/23 29,328 2026-09-30 23:01:11
178.238.32.0/20 29,152 2026-09-30 23:01:11
185.32.160.0/22 29,111 2026-09-30 23:01:11
185.25.184.0/22 29,109 2026-09-30 23:01:11
185.8.166.0/23 29,071 2026-09-30 23:01:11
185.8.164.0/23 29,065 2026-09-30 23:01:11
185.58.40.0/22 29,038 2026-09-30 23:01:11
185.145.160.0/22 28,872 2026-09-30 23:01:11
185.85.164.0/22 28,858 2026-09-30 23:01:11
185.239.216.0/22 28,559 2026-09-30 23:01:11
188.215.18.0/23 28,473 2026-09-30 23:01:11
188.213.234.0/23 28,428 2026-09-30 23:01:11
193.169.160.0/23 27,971 2026-09-30 23:01:11
194.145.180.0/22 27,872 2026-09-30 23:01:11
195.140.252.0/22 27,727 2026-09-30 23:01:11
89.185.224.0/19 14,510 2026-09-30 23:04:38

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: 2026-09-30 23:24:05 UTC
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