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AS56603Aleksey Ershov

RussiaRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS56603 (Aleksey Ershov), an access network registered in Russia with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 59,976th-largest of the 80,743 networks we see originating IPv4, and the 3,247th-largest of 4,983 in Russia. It is seen behind 2 upstream networks, most often AS12389 (PJSC Rostelecom) and AS9049 (JSC "ER-Telecom Holding"), 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

1

IPv6 prefixes

2

IPv4 addresses

256

IPv6 /64s

131k

Upstream graph

The networks AS56603 is seen behind, one and two hops out, drawn from real AS paths.

AS56603Toward the internet core
Upstream graph for AS56603: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS56603Aleksey ErshovThis networkAS9049JSC "ER-Telecom H…AS12389PJSC RostelecomAS57304RETN RussiaAS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS56603 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 AS56603
NetworkCountryRelationshipPathsVantage pts
AS12389PJSC RostelecomRUPeer220120
AS9049JSC "ER-Telecom Holding"RUPeer5335

Prefixes

The largest blocks AS56603 originates, widest first.

Largest prefixes originated by AS56603
PrefixAddressesVisibility
195.128.133.0/2425676/76
2a09:6280:1::/4865.5k × /6463/63
2a09:6280:4::/4865.5k × /6463/63

Routing health

How AS56603'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 — 1 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS56603 started or stopped in this period.

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