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AS15726MARCANT AG

GermanyRegistryRIPE NCC

As of 23rd October 2026, AS15726 (MARCANT AG), a network registered in Germany with RIPE NCC, originates 5 IPv4 prefixes covering 12.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 9,278th-largest of the 79,659 networks we see originating IPv4, and the 327th-largest of 2,307 in Germany. It is seen behind 3 upstream networks, most often AS8220 (COLT) and AS13237 (euNetworks GmbH). 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

5

IPv6 prefixes

1

IPv4 addresses

12.5k

IPv6 /64s

4.3B

Upstream graph

The networks AS15726 is seen behind, one and two hops out, drawn from real AS paths.

AS15726Toward the internet core
Upstream graph for AS15726: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15726MARCANT AGThis networkAS3209Vodafone GmbHAS8220COLTAS13237euNetworks GmbHAS1273Vodafone Group PLCAS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS15726 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
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS15726
NetworkCountryRelationshipPathsVantage pts
AS8220COLTGBPeer335103
AS13237euNetworks GmbHDEPeer10428
AS3209Vodafone GmbHDEPeer88

Prefixes

The largest blocks AS15726 originates, widest first.

Largest prefixes originated by AS15726
PrefixAddressesVisibility
213.149.64.0/204.1k77/77
217.14.160.0/204.1k77/77
37.60.200.0/212k77/77
46.231.232.0/212k77/77
193.39.192.0/2425677/77
2a00:f88::/324.3B × /6462/64

Routing health

How AS15726'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%6
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS15726 started or stopped in this period.

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