asn.dev

Address space

AS24971 MASTER-AS Czech Republic www.master.cz

IPv4 prefixes 31 58.11K addresses
IPv6 prefixes 26
Most common size /22 IPv4
Flagged 0

Shape

Prefix sizes

IPv4
/19
/19: 3
3
/20
/20: 3
3
/21
/21: 3
3
/22
/22: 11
11
/23
/23: 4
4
/24
/24: 7
7

How this network carves its IPv4 space. A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.

Shape

Prefix sizes

IPv6
/29
/29: 2
2
/32
/32: 4
4
/33
/33: 1
1
/34
/34: 1
1
/35
/35: 1
1
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 2
2
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 4
4

Geography

Where the space lands

CountryNamePrefixes
CZCzechia57

Inventory

All prefixes

57 total
PrefixFamilyAddressesCountryFlags
5.180.200.0/22IPv41,024CZ
37.140.220.0/24IPv4256CZ
37.205.8.0/21IPv42,048CZ
77.93.192.0/19IPv48,192CZ
80.79.16.0/20IPv44,096CZ
81.31.32.0/20IPv44,096CZ
83.167.224.0/19IPv48,192CZ
83.223.52.0/24IPv4256CZ
85.118.128.0/21IPv42,048CZ
89.185.224.0/19IPv48,192CZ
91.213.160.0/24IPv4256CZ
91.214.192.0/22IPv41,024CZ
91.216.179.0/24IPv4256CZ
91.226.216.0/22IPv41,024CZ
92.63.56.0/24IPv4256CZ
130.193.16.0/24IPv4256CZ
149.62.144.0/21IPv42,048CZ
176.227.168.0/23IPv4512CZ
178.238.32.0/20IPv44,096CZ
185.8.164.0/22IPv41,024CZ
185.25.184.0/22IPv41,024CZ
185.32.160.0/24IPv4256CZ
185.58.40.0/22IPv41,024CZ
185.85.164.0/22IPv41,024CZ
185.145.160.0/22IPv41,024CZ
185.239.216.0/22IPv41,024CZ
188.213.234.0/23IPv4512CZ
188.215.18.0/23IPv4512CZ
193.169.160.0/23IPv4512CZ
194.145.180.0/22IPv41,024CZ
195.140.252.0/22IPv41,024CZ
2001:678:a50::/48IPv6—CZ
2001:67c:68::/48IPv6—CZ
2a00:8220::/32IPv6—CZ
2a00:a5a0::/32IPv6—CZ
2a01:430::/44IPv6—CZ
2a01:430:10::/48IPv6—CZ
2a01:430:12::/47IPv6—CZ
2a01:430:14::/46IPv6—CZ
2a01:430:18::/45IPv6—CZ
2a01:430:20::/43IPv6—CZ
2a01:430:40::/42IPv6—CZ
2a01:430:80::/41IPv6—CZ
2a01:430:100::/40IPv6—CZ
2a01:430:200::/39IPv6—CZ
2a01:430:400::/38IPv6—CZ
2a01:430:800::/37IPv6—CZ
2a01:430:1000::/36IPv6—CZ
2a01:430:2000::/35IPv6—CZ
2a01:430:4000::/34IPv6—CZ
2a01:430:8000::/33IPv6—CZ
2a03:3b40::/38IPv6—CZ
2a03:7460::/32IPv6—CZ
2a04:16c0:200::/48IPv6—CZ
2a07:4880::/29IPv6—CZ
2a0b:3240::/32IPv6—CZ
2a0c:6380::/29IPv6—CZ