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AS39122Blacknight Internet Solutions Limited

IrelandRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS39122 (Blacknight Internet Solutions Limited), an access network registered in Ireland with RIPE NCC, originates 24 IPv4 prefixes covering 27.6k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 6,019th-largest of the 80,747 networks we see originating IPv4, and the 12th-largest of 197 in Ireland. It is seen behind 42 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC), and in front of 1,471 downstream networks. 97% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

24

IPv6 prefixes

5

IPv4 addresses

27.6k

IPv6 /64s

47.2B

Upstream graph

The networks AS39122 is seen behind, one and two hops out, drawn from real AS paths.

AS39122Toward the internet core
Upstream graph for AS39122: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS39122Blacknight Intern…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2497Internet Initiati…AS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS20130Depaul UniversityAS132337AxclusiveAS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS39122 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

2,996

adjacent networks

Upstreams
421%
Peers
1,48349%
Downstreams
1,47149%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 42.

Upstreams of AS39122
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer3,68264
AS174Cogent Communications, LLCUSPeer1,12426
AS2497Internet Initiative Japan Inc.JPPeer3605
AS18106Viewqwest Pte LtdSGPeer2924
AS6939Hurricane Electric LLCUSPeer2848
AS14537Continent 8 LLCUSPeer2564
AS49544i3D.net B.VNLPeer1582
AS25091IP-Max SACHPeer1542
AS24940Hetzner Online GmbHDEPeer1512
AS8298IPng Networks GmbHCHPeer1492

Prefixes

All 29

The largest blocks AS39122 originates, widest first.

Largest prefixes originated by AS39122
PrefixAddressesVisibility
78.153.192.0/198.2k75/76
46.22.128.0/204.1k75/76
81.17.240.0/204.1k75/76
85.159.16.0/212k1/76
200.69.8.0/212k75/76
185.2.64.0/221k75/76
185.209.164.0/221k75/76
91.197.234.0/2351275/76
176.52.222.0/2351275/76
185.17.238.0/2351275/76

Routing health

How AS39122'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

  • Valid96.6%28
  • Invalid0.0%0
  • No ROA3.4%1

Propagation

  • Globally propagated90% of full-feed peers or more96.6%28
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.4%1

Prefix sizes

IPv4 — 24 prefixes

IPv6 — 5 prefixes

  • /2934.4B × /6420.0%1
  • /324.3B × /6460.0%3
  • /4865.5k × /6420.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced85.159.16.0/2129th Oct 2026
  • Withdrawn2a01:4d8::/3212th Oct 2026

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