subnet.im

AS198725Ultimum Technologies a.s.

CzechiaRegistryRIPE NCC

As of 14th November 2026, AS198725 (Ultimum Technologies a.s.), a network registered in Czechia with RIPE NCC, originates 2 IPv4 prefixes covering 1.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 34,070th-largest of the 80,840 networks we see originating IPv4, and the 288th-largest of 577 in Czechia. It is seen behind 1 upstream network, most often AS174 (Cogent Communications, LLC). Every one of its announcements has 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

2

IPv6 prefixes

1

IPv4 addresses

1.3k

IPv6 /64s

34.4B

Upstream graph

The networks AS198725 is seen behind, one and two hops out, drawn from real AS paths.

AS198725Toward the internet core
Upstream graph for AS198725: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS198725Ultimum Technolog…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…

Networks observed one and two hops upstream of AS198725 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

3

adjacent networks

Upstreams
133%
Peers
267%
Downstreams
00%

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

Upstreams of AS198725
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer213136

Prefixes

The largest blocks AS198725 originates, widest first.

Largest prefixes originated by AS198725
PrefixAddressesVisibility
185.21.196.0/221k77/78
91.220.201.0/2425677/78
2a02:c280::/2934.4B × /6459/64

Routing health

How AS198725'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

  • Valid100.0%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /2934.4B × /64100.0%1

Recent changes

Announcements that started or stopped since 15th Oct 2026.

No announcement by AS198725 started or stopped in this period.

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