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AS200675NORTHERN DATA SERVICES (UK) LIMITED

United KingdomRegistryRIPE NCC

As of 11th November 2026, AS200675 (NORTHERN DATA SERVICES (UK) LIMITED), a network registered in the United Kingdom with RIPE NCC, originates 3 IPv4 prefixes covering 3.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 20,477th-largest of the 80,747 networks we see originating IPv4, and the 637th-largest of 2,122 in the United Kingdom. It is seen behind 10 upstream networks, most often AS12552 (GlobalConnect (IP-Only)) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 2 downstream networks. 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

3

IPv6 prefixes

1

IPv4 addresses

3.1k

IPv6 /64s

34.4B

Upstream graph

The networks AS200675 is seen behind, one and two hops out, drawn from real AS paths.

AS200675Toward the internet core
Upstream graph for AS200675: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS200675NORTHERN DATA SER…This networkAS1257Tele2 Sverige ABAS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS12552GlobalConnect (IP…AS24940Hetzner Online Gm…AS6453TATA Communicatio…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS20130Depaul UniversityAS132337AxclusiveAS49788Nexthop ASAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS200675 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

44

adjacent networks

Upstreams
1023%
Peers
3273%
Downstreams
25%

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

Upstreams of AS200675
NetworkCountryRelationshipPathsVantage pts
AS12552GlobalConnect (IP-Only)SEPeer14763
AS1299Arelion (fka. Telia Carrier)SEPeer9444
AS1257Tele2 Sverige ABEUPeer3917
AS6939Hurricane Electric LLCUSPeer117
AS49544i3D.net B.VNLPeer42
AS35280F5 Networks SARLFRPeer42
AS24940Hetzner Online GmbHDEPeer42
AS20473The Constant Company, LLCUSPeer21
AS262355VSX NetworksBRPeer11
AS132337AxclusiveSGAdjacent11

Prefixes

The largest blocks AS200675 originates, widest first.

Largest prefixes originated by AS200675
PrefixAddressesVisibility
138.124.188.0/221k76/76
185.71.176.0/221k76/76
185.232.76.0/221k76/76
2a05:3400::/2934.4B × /6463/63

Routing health

How AS200675'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%4
  • Invalid0.0%0
  • No ROA0.0%0

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 — 3 prefixes

IPv6 — 1 prefixes

  • /2934.4B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS200675 started or stopped in this period.

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