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AS59437Northern Data AG

GermanyRegistryRIPE NCC

As of 26th September 2026, AS59437 (Northern Data AG), a network registered in Germany with RIPE NCC, originates 27 IPv4 prefixes covering 21.5k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 6,748th-largest of the 79,516 networks we see originating IPv4, and the 242nd-largest of 2,288 in Germany. It is seen behind 32 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS33891 (Core-Backbone GmbH), 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

27

IPv6 prefixes

10

IPv4 addresses

21.5k

IPv6 /64s

120B

Upstream graph

The networks AS59437 is seen behind, one and two hops out, drawn from real AS paths.

AS59437Toward the internet core
Upstream graph for AS59437: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS59437Northern Data AGThis networkAS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS8220COLTAS33891Core-Backbone GmbHAS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6667Elisa OyjAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS59437 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

170

adjacent networks

Upstreams
3219%
Peers
13781%
Downstreams
11%

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

Upstreams of AS59437
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer728116
AS33891Core-Backbone GmbHDEPeer596132
AS6939Hurricane Electric LLCUSPeer387118
AS3257GTT Communications Inc.USPeer28270
AS8220COLTGBPeer209101
AS212175Stelia LtdGBPeer20357
AS6461Zayo BandwidthUSPeer9678
AS1257Tele2 Sverige ABEUPeer5321
AS2116GLOBALCONNECT ASNOPeer3923
AS7713PT Telkom Indonesia TbkIDPeer243

Prefixes

All 37

The largest blocks AS59437 originates, widest first.

Largest prefixes originated by AS59437
PrefixAddressesVisibility
176.56.192.0/198.2k81/81
87.120.208.0/212k81/81
176.56.192.0/212k81/81
176.56.200.0/212k81/81
94.156.254.0/2351280/81
176.56.204.0/2351281/81
176.56.206.0/2351281/81
176.56.208.0/2351281/81
176.56.210.0/2351280/81
85.234.64.0/2425681/81

Routing health

How AS59437'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%37
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%37
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 27 prefixes

IPv6 — 10 prefixes

  • /2934.4B × /6430.0%3
  • /324.3B × /6440.0%4
  • /441M × /6420.0%2
  • /4865.5k × /6410.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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