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AS218661ACO TECH SERVICES LTD

United KingdomRegistryRIPE NCC

As of 10th November 2026, AS218661 (ACO TECH SERVICES LTD), a network registered in the United Kingdom with RIPE NCC, originates 19 IPv4 prefixes covering 4.9k addresses. By IPv4 address space that makes it the 16,135th-largest of the 80,733 networks we see originating IPv4, and the 490th-largest of 2,122 in the United Kingdom. It is seen behind 1 upstream network, most often AS62610 (Zenlayer Inc). 68% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

19

IPv6 prefixes

0

IPv4 addresses

4.9k

IPv6 /64s

0

Upstream graph

The networks AS218661 is seen behind, one and two hops out, drawn from real AS paths.

AS218661Toward the internet core
Upstream graph for AS218661: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS218661ACO TECH SERVICES…This networkAS62610Zenlayer IncAS21859Zenlayer IncAS29752Zenlayer Inc

Networks observed one and two hops upstream of AS218661 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS218661
NetworkCountryRelationshipPathsVantage pts
AS62610Zenlayer IncUSPeer1,37676

Prefixes

The largest blocks AS218661 originates, widest first.

Largest prefixes originated by AS218661
PrefixAddressesVisibility
2.58.154.0/2425676/76
69.90.129.0/2425675/76
79.98.33.0/2425621/76
79.180.117.0/2425675/76
79.182.40.0/2425675/76
87.232.99.0/2425676/76
91.200.223.0/2425675/76
94.118.128.0/2425675/76
94.118.130.0/2425675/76
109.65.225.0/2425675/76

Routing health

How AS218661'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

  • Valid68.4%13
  • Invalid5.3%1
  • No ROA26.3%5

Propagation

  • Globally propagated90% of full-feed peers or more94.7%18
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%5.3%1

Prefix sizes

IPv4 — 19 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn154.193.1.0/246th Nov 2026
  • Withdrawn154.94.60.0/246th Nov 2026
  • Announced154.193.1.0/245th Nov 2026
  • Announced154.94.60.0/245th Nov 2026
  • Withdrawn130.78.17.0/245th Nov 2026
  • Announced195.5.170.0/2430th Oct 2026
  • Announced91.200.223.0/2430th Oct 2026
  • Withdrawn51.241.44.0/2429th Oct 2026
  • Withdrawn69.90.128.0/2429th Oct 2026
  • Withdrawn76.74.212.0/2429th Oct 2026
  • Withdrawn104.234.28.0/2425th Oct 2026
  • Withdrawn212.180.108.0/2425th Oct 2026

12 announced and 11 withdrawn in all; the most recent are shown.

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