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AS12637Seeweb s.r.l.

ItalyRegistryRIPE NCCTypeContent

As of 10th November 2026, AS12637 (Seeweb s.r.l.), a content network registered in Italy with RIPE NCC, originates 33 IPv4 prefixes covering 86k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 2,660th-largest of the 80,733 networks we see originating IPv4, and the 36th-largest of 1,089 in Italy. It is seen behind 33 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS2914 (NTT America, Inc.), and in front of 14 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

33

IPv6 prefixes

10

IPv4 addresses

86k

IPv6 /64s

193B

Upstream graph

The networks AS12637 is seen behind, one and two hops out, drawn from real AS paths.

AS12637Toward the internet core
Upstream graph for AS12637: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12637Seeweb s.r.l.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3303Swisscom (Schweiz…AS6939Hurricane Electri…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS12637 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

1,108

adjacent networks

Upstreams
333%
Peers
1,06196%
Downstreams
141%

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

Upstreams of AS12637
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer1,59355
AS2914NTT America, Inc.USPeer1,20979
AS174Cogent Communications, LLCUSPeer51034
AS6939Hurricane Electric LLCUSPeer16712
AS3303Swisscom (Schweiz) AGCHPeer15421
AS13030Init7 (Switzerland) Ltd.CHPeer1515
AS18106Viewqwest Pte LtdSGPeer1484
AS25091IP-Max SACHPeer843
AS23673Cogetel Online, Cambodia, ISPKHAdjacent762
AS8298IPng Networks GmbHCHPeer752

Prefixes

All 43

The largest blocks AS12637 originates, widest first.

Largest prefixes originated by AS12637
PrefixAddressesVisibility
85.94.192.0/198.2k76/76
95.174.0.0/198.2k76/76
212.25.160.0/198.2k76/76
212.35.192.0/198.2k76/76
212.66.224.0/198.2k76/76
213.171.160.0/198.2k76/76
5.144.160.0/204.1k76/76
37.9.224.0/204.1k76/76
85.94.208.0/204.1k76/76
217.64.192.0/204.1k76/76

Routing health

How AS12637'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%43
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more97.7%42
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.3%1

Prefix sizes

IPv4 — 33 prefixes

IPv6 — 10 prefixes

  • /2934.4B × /6450.0%5
  • /324.3B × /6450.0%5

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn193.17.32.0/243rd Nov 2026
  • Withdrawn93.157.185.0/2431st Oct 2026
  • Announced217.64.195.0/2429th Oct 2026
  • Withdrawn217.64.195.0/2422nd Oct 2026

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