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AS39122Blacknight Internet Solutions Limited

IrelandRegistryRIPE NCCTypeEyeball

As of 26th September 2026, AS39122 (Blacknight Internet Solutions Limited), an access network registered in Ireland with RIPE NCC, originates 26 IPv4 prefixes covering 26.4k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 6,057th-largest of the 79,480 networks we see originating IPv4, and the 13th-largest of 194 in Ireland. It is seen behind 40 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC), and in front of 1,469 downstream networks. 91% of its announcements have a valid RPKI ROA; 3 are RPKI-invalid. 91% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

26

IPv6 prefixes

6

IPv4 addresses

26.4k

IPv6 /64s

51.5B

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…AS14537Continent 8 LLCAS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS3356Lumen (Level 3)

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

2,985

adjacent networks

Upstreams
401%
Peers
1,47649%
Downstreams
1,46949%

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

Upstreams of AS39122
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer3,28350
AS174Cogent Communications, LLCUSPeer1,12919
AS6939Hurricane Electric LLCUSPeer92933
AS2497Internet Initiative Japan Inc.JPPeer3515
AS14537Continent 8 LLCUSPeer2594
AS18106Viewqwest Pte LtdSGPeer2402
AS38880Micron21 Datacentre Pty LtdAUPeer2242
AS49544i3D.net B.VNLPeer1572
AS25091IP-Max SACHPeer1502
AS52075Wifirst S.A.S.FRPeer1492

Prefixes

All 32

The largest blocks AS39122 originates, widest first.

Largest prefixes originated by AS39122
PrefixAddressesVisibility
78.153.192.0/198.2k80/81
46.22.128.0/204.1k80/81
81.17.240.0/204.1k80/81
200.69.8.0/212k80/81
185.2.64.0/221k80/81
185.209.164.0/221k80/81
91.197.234.0/2351280/81
176.52.222.0/2351280/81
185.17.238.0/2351280/81
64.96.3.0/2425680/81

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

  • Valid90.6%29
  • Invalid9.4%3
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more90.6%29
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%9.4%3

Prefix sizes

IPv4 — 26 prefixes

IPv6 — 6 prefixes

  • /2934.4B × /6416.7%1
  • /324.3B × /6466.7%4
  • /4865.5k × /6416.7%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

  • Withdrawn85.159.16.0/2121st Sept 2026

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