subnet.im

AS203598SIMPLEX SOFTWARE & INTERNET SERVICES LTD

CyprusRegistryRIPE NCC

As of 11th November 2026, AS203598 (SIMPLEX SOFTWARE & INTERNET SERVICES LTD), a network registered in Cyprus with RIPE NCC, originates 4 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 36,499th-largest of the 80,743 networks we see originating IPv4, and the 56th-largest of 132 in Cyprus. It is seen behind 2 upstream networks, most often AS6866 (Cyprus Telecommunications Authority) and AS8544 (Primetel PLC), and in front of 1 downstream network. 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

4

IPv6 prefixes

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS203598 is seen behind, one and two hops out, drawn from real AS paths.

AS203598Toward the internet core
Upstream graph for AS203598: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS203598SIMPLEX SOFTWARE …This networkAS6866Cyprus Telecommun…AS8544Primetel PLCAS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS174Cogent Communicat…AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS203598 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

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS203598
NetworkCountryRelationshipPathsVantage pts
AS6866Cyprus Telecommunications AuthorityCYPeer24655
AS8544Primetel PLCCYPeer13433

Prefixes

The largest blocks AS203598 originates, widest first.

Largest prefixes originated by AS203598
PrefixAddressesVisibility
62.228.240.0/2425676/76
87.228.203.0/2425676/76
93.109.224.0/2425676/76
93.109.225.0/2425676/76

Routing health

How AS203598'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS203598 started or stopped in this period.

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