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AS24971

MASTER-AS

Czech Republic / www.master.cz

Registry

Authoritative registration data

AS number
24971
Name
MASTER-AS
Organisation
Czech Republic / www.master.cz
Country
RIR
RIPE
Registered
Source:asn:rdap retrieved

IPv4 prefixes

33

IPv6 prefixes

13

Total announced

46

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS24971
77.93.192.0/19 IPv4 /19 not checked
83.167.224.0/19 IPv4 /19 not checked
89.185.224.0/19 IPv4 /19 not checked
178.238.32.0/20 IPv4 /20 not checked
80.79.16.0/20 IPv4 /20 not checked
81.31.32.0/20 IPv4 /20 not checked
149.62.144.0/21 IPv4 /21 not checked
85.118.128.0/21 IPv4 /21 not checked
185.145.160.0/22 IPv4 /22 not checked
185.239.216.0/22 IPv4 /22 not checked
185.25.184.0/22 IPv4 /22 not checked
185.32.160.0/22 IPv4 /22 not checked
185.58.40.0/22 IPv4 /22 not checked
185.85.164.0/22 IPv4 /22 not checked
194.145.180.0/22 IPv4 /22 not checked
195.140.252.0/22 IPv4 /22 not checked
37.205.12.0/22 IPv4 /22 not checked
37.205.8.0/22 IPv4 /22 not checked
5.180.200.0/22 IPv4 /22 not checked
91.214.192.0/22 IPv4 /22 not checked
91.226.216.0/22 IPv4 /22 not checked
176.227.168.0/23 IPv4 /23 not checked
185.8.164.0/23 IPv4 /23 not checked
185.8.166.0/23 IPv4 /23 not checked
188.213.234.0/23 IPv4 /23 not checked
188.215.18.0/23 IPv4 /23 not checked
193.169.160.0/23 IPv4 /23 not checked
130.193.16.0/24 IPv4 /24 not checked
37.140.220.0/24 IPv4 /24 not checked
83.223.52.0/24 IPv4 /24 not checked
91.213.160.0/24 IPv4 /24 not checked
91.216.179.0/24 IPv4 /24 not checked
92.63.56.0/24 IPv4 /24 not checked
2a07:4880::/29 IPv6 /29 not checked
2a0c:6380::/29 IPv6 /29 not checked
2a00:8220::/32 IPv6 /32 not checked
2a00:a5a0::/32 IPv6 /32 not checked
2a01:430::/32 IPv6 /32 not checked
2a03:7460::/32 IPv6 /32 not checked
2a0b:3240::/32 IPv6 /32 not checked
2a03:3b40:200::/39 IPv6 /39 not checked
2a03:3b40:100::/40 IPv6 /40 not checked
2a03:3b40::/40 IPv6 /40 not checked
2001:678:a50::/48 IPv6 /48 not checked
2001:67c:68::/48 IPv6 /48 not checked
2a04:16c0:200::/48 IPv6 /48 not checked

No rows match “”.

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Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

Internet Exchange memberships listed for AS24971
Address families
BR-IX: PEER 10,000 Mbps IPv4 · IPv6
NIX.CZ FENIX: FENIX VLAN 200,000 Mbps IPv4 · IPv6
NIX.CZ: Public peering VLAN 200,000 Mbps IPv4 · IPv6
NIX.SK 10,000 Mbps IPv4 · IPv6
Peering.cz 100,000 Mbps IPv4 · IPv6

No rows match “”.

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Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS24971 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

15 networks seen before AS24971 in AS paths

Observed upstreams
Families
AS9002 RETN-AS 2,699 15,220
v4 v6
AS1299 TWELVE99 1,312 8,443
v4 v6
AS6939 HURRICANE 377 2,216
v4 v6
AS8218 NEO-ASN 68 1,058
v4 v6
AS14840 ASN14840 40 585
v4 v6
AS1764 NEXTLAYER-AS 36 230
v4 v6
AS33891 CORE-BACKBONE 29 181
v4
AS50629 LWLCOM 35 160
v4 v6
AS4455 21 154
v4
AS21320 13 96
v4 v6
AS6663 16 84
v4 v6
AS6204 10 54
v4
AS13194 9 51
v4
AS263444 4 10
v4
AS197451 VUTBR-AS 3 6
v6

No rows match “”.

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Observed downstreams

8 networks seen after AS24971 in AS paths

Observed downstreams
Families
AS48921 789 5,205
v4 v6
AS207167 1,612 3,740
v4 v6
AS204957 GREENFLOID-AS 673 3,412
v4 v6
AS51134 312 1,332
v4 v6
AS211085 408 1,036
v4 v6
AS21045 263 339
v4
AS64481 263 339
v4
AS202857 263 339
v4

No rows match “”.

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Uncertain adjacencies

18 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS24482 SGGS-AS-AP 21 730
v4 v6
AS51184 20 236
v4 v6
AS59890 20 236
v4 v6
AS212483 level86 20 234
v4 v6
AS49544 i3Dnet 20 184
v4 v6
AS28917 20 160
v4 v6
AS47692 16 130
v4
AS29504 22 121
v4 v6
AS198150 SIACOM-AS 20 117
v4 v6
AS40994 20 116
v4 v6
AS6881 21 112
v4 v6
AS3212 20 111
v4 v6
AS37721 ORG-VTS1-AFRINIC 16 93
v4 v6
AS36236 NETACTUATE 13 73
v4 v6
AS35369 16 65
v4
AS8529 OMANTEL-AS 15 65
v6
AS29049 10 54
v4
AS41327 FIBERTELECOM-AS 16 52
v6

No rows match “”.

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Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual. Adjacencies marked uncertain were seen only as direct peers of a route collector, so the collector's own peering may have created them.