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AS18561EPAM Systems, Inc

United StatesRegistryARIN

As of 11th November 2026, AS18561 (EPAM Systems, Inc), a network registered in the United States with ARIN, originates 2 IPv4 prefixes covering 512 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 49,320th-largest of the 80,747 networks we see originating IPv4, and the 10,557th-largest of 18,752 in the United States. It is seen behind 2 upstream networks, most often AS12025 (Iron Mountain Data Centers) and AS15830 (Equinix, Inc.). 50% 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

2

IPv6 prefixes

2

IPv4 addresses

512

IPv6 /64s

131k

Upstream graph

The networks AS18561 is seen behind, one and two hops out, drawn from real AS paths.

AS18561Toward the internet core
Upstream graph for AS18561: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18561EPAM Systems, IncThis networkAS12025Iron Mountain Dat…AS15830Equinix, Inc.AS3356Lumen (Level 3)AS6461Zayo BandwidthAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS18561 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS18561
NetworkCountryRelationshipPathsVantage pts
AS12025Iron Mountain Data CentersUSPeer138138
AS15830Equinix, Inc.NLPeer137137

Prefixes

The largest blocks AS18561 originates, widest first.

Largest prefixes originated by AS18561
PrefixAddressesVisibility
174.128.60.0/2425676/76
204.153.55.0/2425676/76
2602:815:1::/4865.5k × /6462/63
2602:815:2::/4865.5k × /6461/63

Routing health

How AS18561'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

  • Valid50.0%2
  • Invalid0.0%0
  • No ROA50.0%2

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 — 2 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS18561 started or stopped in this period.

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