asn.dev

Routing security

AS24971 MASTER-AS Czech Republic www.master.cz

Hosting RIPE Content

RPKI valid 98% 45 of 46 announcements
RPKI invalid 0 none
No ROA 1 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 46 authorising this AS

Announcements

What this network originates

46 observed

Every prefix observed with AS24971 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
83.223.52.0/24No ROAIRR52
2a00:8220::/32RPKI validIRR31
2a00:a5a0::/32RPKI validIRR31
2a0b:3240::/32RPKI validIRR31
2a0c:6380::/29RPKI validIRR31
2a01:430::/32RPKI validIRR31
2a03:3b40::/40RPKI validIRR31
2a03:3b40:100::/40RPKI validIRR31
2a03:3b40:200::/39RPKI validIRR31
2a03:7460::/32RPKI validIRR31
2a04:16c0:200::/48RPKI validIRR31
2a07:4880::/29RPKI validIRR31
5.180.200.0/22RPKI validIRR52
37.140.220.0/24RPKI validIRR52
37.205.8.0/22RPKI validIRR52
37.205.12.0/22RPKI validIRR52
77.93.192.0/19RPKI validIRR52
80.79.16.0/20RPKI validIRR52
81.31.32.0/20RPKI validIRR52
83.167.224.0/19RPKI validIRR52
85.118.128.0/21RPKI validIRR52
89.185.224.0/19RPKI validIRR52
91.213.160.0/24RPKI validIRR52
91.214.192.0/22RPKI validIRR52
91.216.179.0/24RPKI validIRR52
91.226.216.0/22RPKI validIRR52
92.63.56.0/24RPKI validIRR52
130.193.16.0/24RPKI validIRR52
149.62.144.0/21RPKI validIRR52
176.227.168.0/23RPKI validIRR52
178.238.32.0/20RPKI validIRR52
185.8.164.0/23RPKI validIRR52
185.8.166.0/23RPKI validIRR52
185.25.184.0/22RPKI validIRR52
185.32.160.0/22RPKI validIRR52
185.58.40.0/22RPKI validIRR52
185.85.164.0/22RPKI validIRR52
185.145.160.0/22RPKI validIRR52
185.239.216.0/22RPKI validIRR52
188.213.234.0/23RPKI validIRR52
188.215.18.0/23RPKI validIRR52
193.169.160.0/23RPKI validIRR52
194.145.180.0/22RPKI validIRR52
195.140.252.0/22RPKI validIRR52
2001:67c:68::/48RPKI validIRR31
2001:678:a50::/48RPKI validIRR31

RPKI · ROAs

Route origin authorisations

46 ROAs

Signed statements by address holders that AS24971 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
5.180.200.0/22/22RIPENCC
37.140.220.0/24/24RIPENCC
37.205.8.0/22/22RIPENCC
37.205.12.0/22/22RIPENCC
77.93.192.0/19/19RIPENCC
80.79.16.0/20/20RIPENCC
81.31.32.0/20/20RIPENCC
83.167.224.0/19/19RIPENCC
85.118.128.0/21/21RIPENCC
89.185.224.0/19/19RIPENCC
91.213.160.0/24/24RIPENCC
91.214.192.0/22/22RIPENCC
91.216.179.0/24/24RIPENCC
91.226.216.0/22/22RIPENCC
92.63.56.0/22/24RIPENCC
130.193.16.0/24/24RIPENCC
149.62.144.0/21/21RIPENCC
176.227.168.0/23/23RIPENCC
178.238.32.0/20/20RIPENCC
185.8.164.0/23/23RIPENCC
185.8.166.0/23/24RIPENCC
185.25.184.0/22/22RIPENCC
185.32.160.0/22/24RIPENCC
185.58.40.0/22/22RIPENCC
185.85.164.0/22/22RIPENCC
185.145.160.0/22/22RIPENCC
185.239.216.0/22/22RIPENCC
188.213.234.0/23/23RIPENCC
188.215.18.0/23/23RIPENCC
193.169.160.0/23/23RIPENCC
193.169.212.0/24/24RIPENCC
194.145.180.0/22/22RIPENCC
195.140.252.0/22/22RIPENCC
2001:678:a50::/48/48RIPENCC
2001:67c:68::/48/48RIPENCC
2a00:8220::/32/32RIPENCC
2a00:a5a0::/32/32RIPENCC
2a01:430::/32/48RIPENCC
2a03:3b40::/40/40RIPENCC
2a03:3b40:100::/40/40RIPENCC
2a03:3b40:200::/39/39RIPENCC
2a03:7460::/32/32RIPENCC
2a04:16c0:200::/48/48RIPENCC
2a07:4880::/29/29RIPENCC
2a0b:3240::/32/32RIPENCC
2a0c:6380::/29/29RIPENCC

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

2 declared

This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.

ASNetworkASPARouting paths
AS1299Arelion Sweden ABDeclaredObserved
AS9002RETN LimitedDeclaredObserved
AS6939Hurricane Electric LLCnot declaredObserved
AS24482SG.GSnot declaredObserved
AS29504Freenet Liberec, z.s.not declaredObserved
AS37721Virtual Technologies & Solutionsnot declaredObserved
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHnot declaredObserved
AS33891Core-Backbone GmbHnot declaredObserved
AS8218Zayo Infrastructure France SAnot declaredObserved

An observed upstream that is not declared is not necessarily a leak: our upstream inference cannot tell a transit provider from a peer seen in the same position. A declared provider that is never observed is usually a backup path.

IRR

Registered route objects

54 objects · 8 not announced

Route objects naming AS24971 as origin, across RADb, the RIR registries, ALTDB and NTTCOM. Objects that are registered but not announced come first: a stale object lets anyone who can spoof this origin through an IRR-built filter.

PrefixSourceDescriptionMaintainerChangedRouting
83.167.245.0/24RIPEHOSTINGSOLUTIONS-1-CZ-MAIMASTER-MNT2019-11-13Not announced
91.226.216.0/23RIPEW-HOSTINGMASTER-MNT2020-02-19Not announced
91.226.218.0/24RIPEW-HOSTINGMASTER-MNT2020-02-19Not announced
92.63.56.0/22RIPECZ-NEWTEL-20150605MASTER-MNT2015-06-09Not announced
92.63.58.0/24RIPEAxfone MASTER IINWT-MNT2022-12-22Not announced
92.63.59.0/24RIPEAxfone MASTER IIINWT-MNT2022-12-22Not announced
185.32.160.0/24RIPECZ-ANAFRA-20130807MASTER-MNT2022-11-23Not announced
2001:67c:2d30::/48RIPE—MPOISEL2019-03-25Not announced
5.180.200.0/22RIPECZ-BYDZOVSKY-20190401MASTER-MNT2019-04-01Announced
37.140.220.0/24RIPECZ-PROFISMS-20210803MASTER-MNT2021-08-04Announced
37.205.8.0/22RIPERELBIT-VPSFREEMASTER-MNT2012-03-29Announced
37.205.12.0/22RIPEVPSFREE-PRG6MASTER-MNT2017-10-05Announced
77.93.192.0/19RIPEMASTER-NET-4MASTER-MNT2007-05-18Announced
80.79.16.0/20RIPEMASTER-NET-2MASTER-MNT2005-03-17Announced
81.31.32.0/20RIPEMASTER-NET-1MASTER-MNT2002-06-17Announced
83.167.224.0/19RIPEMASTER-NET-5MASTER-MNT2008-08-22Announced
83.223.52.0/24RIPEVerotel Merchant Services BVMASTER-MNT2018-12-10Announced
85.118.128.0/21RIPECZ-MASTER-20120312MASTER-MNT2012-03-12Announced
89.185.224.0/19RIPEMASTER-NET-3MASTER-MNT2006-04-12Announced
91.213.160.0/24RIPEInternet Info, s.r.o.MASTER-MNT2009-08-17Announced
91.214.192.0/22RIPEQCMHC-1-MAI-CZMASTER-MNT2014-04-09Announced
91.216.179.0/24RIPEOXY-1-MAI-CZMASTER-MNT2010-06-10Announced
91.226.216.0/22RIPEW-HOSTINGMASTER-MNT2020-02-18Announced
92.63.56.0/24RIPEAxfone MASTERNWT-MNT2022-12-28Announced
130.193.16.0/24RIPEBNV-NET1MASTER-MNT2011-11-03Announced
149.62.144.0/21RIPECZ-MASTER-20110725MASTER-MNT2011-07-25Announced
176.227.168.0/23RIPEAZIENDEITALIAAZIENDEITALIA-MNT2019-12-06Announced
178.238.32.0/20RIPECZ-MASTER-20100712MASTER-MNT2010-07-13Announced
185.8.164.0/23RIPECZ-VPSFREE-20121101MASTER-MNT2012-11-01Announced
185.8.166.0/23RIPEVPSFREE-BRQ4MASTER-MNT2023-02-06Announced
185.25.184.0/22RIPECZ-NETIO-20130508MASTER-MNT2013-05-13Announced
185.32.160.0/22RIPECZ-ANAFRA-20130807MASTER-MNT2022-11-24Announced
185.58.40.0/22RIPECZ-MASTER-20140519MASTER-MNT2014-05-20Announced
185.85.164.0/22RIPECZ-SN-20150127MASTER-MNT2015-01-30Announced
185.145.160.0/22RIPECZ-ETNETERA-20160401MASTER-MNT2016-04-04Announced
185.239.216.0/22RIPECZ-ADMINIT-20180105MASTER-MNT2018-01-22Announced
188.213.234.0/23RIPECZ-NETIO-20090508MASTER-MNT2016-05-02Announced
188.215.18.0/23RIPECZ-NETIO-20090508MASTER-MNT2016-05-02Announced
193.169.160.0/23RIPEIMARTO-INCMASTER-MNT2015-11-13Announced
194.145.180.0/22RIPECZ-MASTER-2014051902MASTER-MNT2014-05-20Announced
195.140.252.0/22RIPEVMINMASTER-MNT2011-03-23Announced
2001:678:a50::/48RIPERU-AVANTEL-20190403MASTER-MNT2019-04-04Announced
2001:67c:68::/48RIPEIINFO-1-IPV6-MAI-CZMASTER-MNT2009-09-17Announced
2a00:8220::/32RIPECZ-NETIO-20130508MASTER-MNT2013-05-14Announced
2a00:a5a0::/32RIPECZ-ANAFRA-20130624MASTER-MNT2015-06-08Announced
2a01:430::/32RIPEMASTER-IPV6-1-MAI-CZMASTER-MNT2007-08-10Announced
2a03:3b40::/40RIPEVPSFREE-IPV6-PRG2MASTER-MNT2013-01-28Announced
2a03:3b40:100::/40RIPEVPSFREE-IPV6-BRQ2MASTER-MNT2015-01-15Announced
2a03:3b40:200::/39RIPEVPSFREE-IPV6-TUNNELSMASTER-MNT2017-05-28Announced
2a03:7460::/32RIPECZ-SN-20150126MASTER-MNT2015-01-30Announced
2a04:16c0:200::/48RIPEVerotel Merchant Services B.V.MNT-MRJOOST2018-12-18Announced
2a07:4880::/29RIPECZ-ETNETERA-20160401MASTER-MNT2016-04-04Announced
2a0b:3240::/32RIPECZ-BYDZOVSKY-20190401MASTER-MNT2019-04-01Announced
2a0c:6380::/29RIPECZ-ADMINIT-20180105MASTER-MNT2018-01-22Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS24971 directly show who expects to carry it.

AS-setWhereRelationship
AS24971:AS-MASTERCZPeeringDBDeclared by the operator as its own set
AS-43413_NT-NIXRIPELists AS24971 as a direct member
AS-EMAXSIXPEERSRIPELists AS24971 as a direct member
AS-ENERGOTEL_SIX_PEERSRIPELists AS24971 as a direct member
AS-RETN-ACTUAL-V4RIPELists AS24971 as a direct member
AS-RETN-ACTUAL-V6RIPELists AS24971 as a direct member
AS-SIXSK-MEMBERSRIPELists AS24971 as a direct member
AS-SIXSTIP-SETRIPELists AS24971 as a direct member
AS-TO2-NIX-PEERRIPELists AS24971 as a direct member
AS-TRANSCZRIPELists AS24971 as a direct member
AS174:AS-COGC-033RADBLists AS24971 as a direct member
AS24971:AS-MAI-PEERING-CZ-PEERRIPELists AS24971 as a direct member
AS24971:AS-MASTERCZRIPELists AS24971 as a direct member
AS42000:AS-NIXCZ-PEERINGSRIPELists AS24971 as a direct member
AS51202:AS-ALLALTDBLists AS24971 as a direct member
AS5578:AS-SIXPEERSRIPELists AS24971 as a direct member
AS8251:AS-NIX-PEERINGSRIPELists AS24971 as a direct member

RPKI from rpki-client, validated 2026-10-12 12:10 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-12. Cross-check on bgp.he.net.