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AS375Tieto Oyj

FinlandRegistryRIPE NCCTypeContent

As of 23rd October 2026, AS375 (Tieto Oyj), a content network registered in Finland with RIPE NCC, originates 52 IPv4 prefixes covering 87.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,589th-largest of the 79,659 networks we see originating IPv4, and the 11th-largest of 281 in Finland. It is seen behind 2 upstream networks, most often AS55002 (F5, Inc.) and AS12552 (GlobalConnect (IP-Only)). 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

52

IPv6 prefixes

1

IPv4 addresses

87.3k

IPv6 /64s

1.1B

Upstream graph

The networks AS375 is seen behind, one and two hops out, drawn from real AS paths.

AS375Toward the internet core
Upstream graph for AS375: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS375Tieto OyjThis networkAS12552GlobalConnect (IP…AS55002F5, Inc.AS3356Lumen (Level 3)AS49788Nexthop ASAS11404Astound (fka. Wav…AS35280F5 Networks SARL

Networks observed one and two hops upstream of AS375 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 AS375
NetworkCountryRelationshipPathsVantage pts
AS55002F5, Inc.USPeer3,991141
AS12552GlobalConnect (IP-Only)SEPeer7777

Prefixes

All 53

The largest blocks AS375 originates, widest first.

Largest prefixes originated by AS375
PrefixAddressesVisibility
131.207.0.0/1732.8k77/77
192.49.192.0/1816.4k77/77
192.49.96.0/204.1k77/77
192.49.176.0/204.1k77/77
192.49.0.0/212k77/77
192.49.40.0/212k77/77
192.49.56.0/212k77/77
192.49.152.0/212k77/77
192.49.160.0/212k77/77
192.49.36.0/221k77/77

Routing health

How AS375'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%53
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%53
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 52 prefixes

IPv6 — 1 prefixes

  • /341.1B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS375 started or stopped in this period.

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