All ASNs

Autonomous System details for AS24971

AS24971

MasterDC s.r.o. • master.cz

AS24971 — MasterDC s.r.o.

AS Name

MASTER-AS

Country

Czechia (CZ)

Website

master.cz

Number of IPv4

58,880

Number of IPv6

1.67 × 10³⁰

ASN type

Hosting

Status

Allocated

Registry

RIPE

Allocated

June 11, 2002

Last updated

April 15, 2026

IP Ranges

33 IPv4 prefixes, 13 IPv6 prefixes

Prefix	Company	Number of IPs
5.180.200.0/22	Bydzovsky s.r.o.	1,024
37.140.220.0/24	profisms 1	256
37.205.8.0/22	vpsFree.cz, z.s.	1,024
37.205.12.0/22	VPSFREE PRG6	1,024
77.93.192.0/19	Master Internet s.r.o.	8,192
80.79.16.0/20	MasterDC s.r.o.	4,096
81.31.32.0/20	Master Internet s.r.o.	4,096
83.167.224.0/19	MasterDC s.r.o.	8,192
83.223.52.0/24	Verotel International B.V.	256
85.118.128.0/21	MasterDC s.r.o.	2,048
89.185.224.0/19	MasterDC s.r.o.	8,192
91.213.160.0/24	Internet Info, s.r.o.	256
91.214.192.0/22	QCM, s.r.o.	1,024
91.216.179.0/24	oXyShop s.r.o.	256
91.226.216.0/22	W HOSTING, s.r.o.	1,024
92.63.56.0/24	Axfone s.r.o.	256
130.193.16.0/24	AUTO GAMES PLUS a.s.	256
149.62.144.0/21	MasterDC s.r.o.	2,048
176.227.168.0/23	Aziende Italia S.r.l.	512
178.238.32.0/20	MasterDC s.r.o.	4,096
185.8.164.0/23	vpsFree.cz, z.s.	512
185.8.166.0/23	vpsFree.cz - Brno3	512
185.25.184.0/22	NETIO Solutions s.r.o.	1,024
185.32.160.0/22	ANAFRA a.s.	1,024
185.58.40.0/22	MasterDC s.r.o.	1,024
185.85.164.0/22	ServerNow s.r.o.	1,024
185.145.160.0/22	Etnetera Core a.s.	1,024
185.239.216.0/22	AdminIT, s. r. o.	1,024
188.213.234.0/23	NETIO Solutions s.r.o.	512
188.215.18.0/23	NETIO Solutions s.r.o.	512
193.169.160.0/23	Imarto Inc.	512
194.145.180.0/22	ServerNow s.r.o.	1,024
195.140.252.0/22	Virtualmaster, s.r.o.	1,024
2001:678:a50::/48	Imarto Inc.	1.21 × 10²⁴
2001:67c:68::/48	Internet Info, s.r.o.	1.21 × 10²⁴
2a00:8220::/32	NETIO Solutions s.r.o.	7.92 × 10²⁸
2a00:a5a0::/32	ANAFRA a.s.	7.92 × 10²⁸
2a01:430::/32	MasterDC s.r.o.	7.92 × 10²⁸
2a03:3b40::/40	vpsFree.cz, z.s.	3.09 × 10²⁶
2a03:3b40:100::/40	vpsFree.cz - IPv6 - Brno 2	3.09 × 10²⁶
2a03:3b40:200::/39	VPSFREE IPV6 TUNNELS	6.19 × 10²⁶
2a03:7460::/32	ServerNow s.r.o.	7.92 × 10²⁸
2a04:16c0:200::/48	Verotel International B.V.	1.21 × 10²⁴
2a07:4880::/29	Etnetera Core a.s.	6.34 × 10²⁹
2a0b:3240::/32	Bydzovsky s.r.o.	7.92 × 10²⁸
2a0c:6380::/29	AdminIT, s. r. o.	6.34 × 10²⁹

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS24971

26 peers

AS1764 AS4455 AS6939 AS8218 AS8529 AS13194 AS21320 AS24940 AS24482 AS28917 AS29504 AS32590 AS33891 AS39120 AS59890 AS263444 AS35369 AS37721 AS40994 AS47232 AS47692 AS49544 AS50629 AS51184 AS132337 AS212483

AS24971 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS24971

2 upstreams

AS1299 AS9002

AS24971 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS24971 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS24971

8 downstreams

AS21045 AS48921 AS51134 AS64481 AS202857 AS204957 AS207167 AS211085

AS24971 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.