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WorldIP.io
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 v1.3.0 — 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
91.9%
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
86.1%
MasterDC s.r.o. CZ South Moravian Brno
80.79.16.0/20 4.1K
95.3%
MasterDC s.r.o. CZ — —
81.31.32.0/20 4.1K
85.8%
MasterDC s.r.o. CZ South Moravian Brno
178.238.32.0/20 4.1K
91.2%
MasterDC s.r.o. CZ — —
37.205.8.0/21 2.0K
39.2%
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
16.0%
MasterDC s.r.o. CZ — —
91.214.192.0/22 1.0K
99.7%
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
17.8%
MasterDC s.r.o. CZ — —
185.25.184.0/22 1.0K
99.4%
MasterDC s.r.o. CZ — —
185.58.40.0/22 1.0K
97.7%
MasterDC s.r.o. CZ — —
185.85.164.0/22 1.0K
97.9%
MasterDC s.r.o. CZ — —
185.145.160.0/22 1.0K
99.9%
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
100.0%
MasterDC s.r.o. CZ — —
176.227.168.0/23 512
33.0%
MasterDC s.r.o. IT — —
188.213.234.0/23 512
100.0%
MasterDC s.r.o. CZ — —
188.215.18.0/23 512
99.6%
MasterDC s.r.o. CZ — —
193.169.160.0/23 512
59.8%
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
99.2%
MasterDC s.r.o. CZ — —
185.32.160.0/24 256
98.0%
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 37,840 2026-10-27 11:07:58
37.140.220.0/24 36,459 2026-10-27 11:07:58
37.205.12.0/22 36,107 2026-10-27 11:07:58
37.205.8.0/22 36,104 2026-10-27 11:07:58
91.226.216.0/22 35,869 2026-10-27 11:07:58
77.93.192.0/19 35,817 2026-10-27 11:07:58
80.79.16.0/20 35,756 2026-10-27 11:07:58
81.31.32.0/20 35,663 2026-10-27 11:07:58
83.167.224.0/19 35,649 2026-10-27 11:07:58
85.118.128.0/21 35,620 2026-10-27 11:07:58
91.214.192.0/22 35,467 2026-10-27 11:07:58
91.216.179.0/24 35,447 2026-10-27 11:07:58
91.213.160.0/24 35,402 2026-10-27 11:07:58
92.63.56.0/24 35,342 2026-10-27 11:07:58
83.223.52.0/24 34,760 2026-10-27 11:07:58
130.193.16.0/24 33,255 2026-10-27 11:07:58
149.62.144.0/21 32,915 2026-10-27 11:07:58
176.227.168.0/23 31,954 2026-10-27 11:07:58
178.238.32.0/20 31,853 2026-10-27 11:07:58
185.58.40.0/22 31,768 2026-10-27 11:07:58
185.25.184.0/22 31,757 2026-10-27 11:07:58
185.32.160.0/22 31,751 2026-10-27 11:07:58
185.8.166.0/23 31,714 2026-10-27 11:07:58
185.8.164.0/23 31,710 2026-10-27 11:07:58
185.145.160.0/22 31,691 2026-10-27 11:07:58
185.85.164.0/22 31,499 2026-10-27 11:07:58
185.239.216.0/22 31,197 2026-10-27 11:07:58
188.215.18.0/23 31,117 2026-10-27 11:07:58
188.213.234.0/23 31,079 2026-10-27 11:07:58
195.140.252.0/22 30,678 2026-10-27 11:07:58
193.169.160.0/23 30,616 2026-10-27 11:07:58
194.145.180.0/22 30,514 2026-10-27 11:07:58
89.185.224.0/19 17,230 2026-10-27 11:07:58

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: 2026-10-27 12:09:05 UTC
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