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AS59437Northern Data AG

GermanyRegistryRIPE NCC

As of 11th November 2026, AS59437 (Northern Data AG), a network registered in Germany with RIPE NCC, originates 27 IPv4 prefixes covering 21.5k addresses and 11 IPv6 prefixes. By IPv4 address space that makes it the 6,864th-largest of the 80,747 networks we see originating IPv4, and the 247th-largest of 2,331 in Germany. It is seen behind 31 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

11

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 GmbHAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS398465Rackdog LLCAS20130Depaul UniversityAS132337AxclusiveAS6667Elisa 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

169

adjacent networks

Upstreams
3118%
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)SEPeer734115
AS33891Core-Backbone GmbHDEPeer487102
AS6939Hurricane Electric LLCUSPeer407110
AS3257GTT Communications Inc.USPeer24661
AS8220COLTGBPeer207102
AS2116GLOBALCONNECT ASNOPeer193125
AS212175Stelia LtdGBPeer19153
AS6461Zayo BandwidthUSPeer8267
AS7713PT Telkom Indonesia TbkIDPeer183
AS200675NORTHERN DATA SERVICES (UK) LIMITEDGBPeer1510

Prefixes

All 38

The largest blocks AS59437 originates, widest first.

Largest prefixes originated by AS59437
PrefixAddressesVisibility
176.56.192.0/198.2k76/76
87.120.208.0/212k76/76
176.56.192.0/212k76/76
176.56.200.0/212k76/76
94.156.254.0/2351275/76
176.56.204.0/2351276/76
176.56.206.0/2351276/76
176.56.208.0/2351276/76
176.56.210.0/2351276/76
85.234.64.0/2425676/76

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%38
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%38
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 27 prefixes

IPv6 — 11 prefixes

  • /2934.4B × /6427.3%3
  • /324.3B × /6436.4%4
  • /441M × /6418.2%2
  • /4865.5k × /6418.2%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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