subnet.im

AS197731The Internet Engineering Group B.V.

NetherlandsRegistryRIPE NCC

As of 12th November 2026, AS197731 (The Internet Engineering Group B.V.), a network registered in the Netherlands with RIPE NCC, originates 20 IPv4 prefixes covering 10k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 10,745th-largest of the 80,772 networks we see originating IPv4, and the 161st-largest of 1,042 in the Netherlands. It is seen behind 25 upstream networks, most often AS137409 (GSL Networks Pty LTD) and AS8455 (atom86 BV), and in front of 2 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 57% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

20

IPv6 prefixes

3

IPv4 addresses

10k

IPv6 /64s

8.6B

Upstream graph

The networks AS197731 is seen behind, one and two hops out, drawn from real AS paths.

AS197731Toward the internet core
Upstream graph for AS197731: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS197731The Internet Engi…This networkAS6939Hurricane Electri…AS8455atom86 BVAS14537Continent 8 LLCAS39637ADES BVAS137409GSL Networks Pty …AS20130Depaul UniversityAS132337AxclusiveAS51088A2B IP B.V.AS2914NTT America, Inc.AS3356Lumen (Level 3)AS8529Zain Omantel Inte…AS32590Valve Corporation

Networks observed one and two hops upstream of AS197731 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

145

adjacent networks

Upstreams
2517%
Peers
11881%
Downstreams
21%

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

Upstreams of AS197731
NetworkCountryRelationshipPathsVantage pts
AS137409GSL Networks Pty LTDAUPeer847118
AS8455atom86 BVNLPeer14919
AS6939Hurricane Electric LLCUSPeer527
AS39637ADES BVNLPeer3317
AS14537Continent 8 LLCUSPeer242
AS8298IPng Networks GmbHCHPeer182
AS24940Hetzner Online GmbHDEPeer182
AS25091IP-Max SACHPeer182
AS132337AxclusiveSGAdjacent182
AS39122Blacknight Internet Solutions LimitedIEPeer182

Prefixes

The largest blocks AS197731 originates, widest first.

Largest prefixes originated by AS197731
PrefixAddressesVisibility
31.3.104.0/212k78/78
185.67.224.0/221k78/78
185.119.28.0/221k78/78
185.148.20.0/221k78/78
45.91.118.0/2351278/78
45.137.196.0/2351278/78
158.173.56.0/2351278/78
31.3.105.0/242561/78
31.3.107.0/242561/78
31.3.108.0/242561/78

Routing health

How AS197731'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%23
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more56.5%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%43.5%10

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6466.7%2
  • /4016.8M × /6433.3%1

Recent changes

Announcements that started or stopped since 13th Oct 2026.

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