subnet.im

AS39392SH.cz s.r.o.

CzechiaRegistryRIPE NCCTypeContent

As of 26th September 2026, AS39392 (SH.cz s.r.o.), a content network registered in Czechia with RIPE NCC, originates 12 IPv4 prefixes covering 32.5k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 5,510th-largest of the 79,516 networks we see originating IPv4, and the 29th-largest of 574 in Czechia. It is seen behind 16 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS33891 (Core-Backbone GmbH), and in front of 96 downstream networks. 88% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 82% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

12

IPv6 prefixes

5

IPv4 addresses

32.5k

IPv6 /64s

73B

Upstream graph

The networks AS39392 is seen behind, one and two hops out, drawn from real AS paths.

AS39392Toward the internet core
Upstream graph for AS39392: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS39392SH.cz s.r.o.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS33891Core-Backbone GmbHAS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS398465Rackdog LLCAS6667Elisa OyjAS20130Depaul UniversityAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS39392 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

259

adjacent networks

Upstreams
166%
Peers
14757%
Downstreams
9637%

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

Upstreams of AS39392
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer17,755120
AS33891Core-Backbone GmbHDEPeer11,63949
AS174Cogent Communications, LLCUSPeer7,54350
AS3257GTT Communications Inc.USPeer1,22068
AS6939Hurricane Electric LLCUSPeer38831
AS32590Valve CorporationUSPeer932
AS24940Hetzner Online GmbHDEPeer932
AS24482SG.GSSGPeer893
AS49544i3D.net B.VNLPeer772
AS52176TTC TELEKOMUNIKACE s.r.o.CZPeer2525

Prefixes

The largest blocks AS39392 originates, widest first.

Largest prefixes originated by AS39392
PrefixAddressesVisibility
46.234.96.0/198.2k80/81
88.86.96.0/198.2k80/81
95.168.192.0/198.2k80/81
37.235.96.0/204.1k80/81
185.75.232.0/221k80/81
185.247.28.0/221k80/81
185.247.30.0/2351280/81
46.234.121.0/2425619/81
185.80.30.0/2425680/81
185.203.84.0/2425680/81

Routing health

How AS39392'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

  • Valid88.2%15
  • Invalid0.0%0
  • No ROA11.8%2

Propagation

  • Globally propagated90% of full-feed peers or more82.4%14
  • Partially propagated40% to 90%11.8%2
  • Seen by few peersUnder 40%5.9%1

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 5 prefixes

  • /2934.4B × /6440.0%2
  • /324.3B × /6420.0%1
  • /4865.5k × /6440.0%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS39392 started or stopped in this period.

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