subnet.im

AS24971MasterDC s.r.o.

CzechiaRegistryRIPE NCCTypeContent

As of 10th November 2026, AS24971 (MasterDC s.r.o.), a content network registered in Czechia with RIPE NCC, originates 33 IPv4 prefixes covering 58.9k addresses and 13 IPv6 prefixes. By IPv4 address space that makes it the 4,205th-largest of the 80,733 networks we see originating IPv4, and the 19th-largest of 576 in Czechia. It is seen behind 11 upstream networks, most often AS9002 (RETN Limited) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 8 downstream networks. 98% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

33

IPv6 prefixes

13

IPv4 addresses

58.9k

IPv6 /64s

90.3B

Upstream graph

The networks AS24971 is seen behind, one and two hops out, drawn from real AS paths.

AS24971Toward the internet core
Upstream graph for AS24971: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS24971MasterDC s.r.o.This networkAS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS9002RETN LimitedAS24940Hetzner Online Gm…AS132337AxclusiveAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS20130Depaul UniversityAS6667Elisa OyjAS3356Lumen (Level 3)AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS24971 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

71

adjacent networks

Upstreams
1115%
Peers
5273%
Downstreams
811%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS24971
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer3,51677
AS1299Arelion (fka. Telia Carrier)SEPeer1,96553
AS6939Hurricane Electric LLCUSPeer31210
AS132337AxclusiveSGAdjacent1212
AS24940Hetzner Online GmbHDEPeer1212
AS32590Valve CorporationUSPeer1202
AS24482SG.GSSGPeer1072
AS49544i3D.net B.VNLPeer942
AS262355VSX NetworksBRPeer521
AS8529Zain Omantel International FZ-LLCAEPeer261

Prefixes

All 46

The largest blocks AS24971 originates, widest first.

Largest prefixes originated by AS24971
PrefixAddressesVisibility
77.93.192.0/198.2k76/76
83.167.224.0/198.2k76/76
89.185.224.0/198.2k76/76
80.79.16.0/204.1k76/76
81.31.32.0/204.1k76/76
178.238.32.0/204.1k76/76
85.118.128.0/212k76/76
149.62.144.0/212k76/76
5.180.200.0/221k76/76
37.205.8.0/221k76/76

Routing health

How AS24971's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid97.8%45
  • Invalid0.0%0
  • No ROA2.2%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%46
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 33 prefixes

IPv6 — 13 prefixes

  • /2934.4B × /6415.4%2
  • /324.3B × /6438.5%5
  • /3933.6M × /647.7%1
  • /4016.8M × /6415.4%2
  • /4865.5k × /6423.1%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS24971 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.