subnet.im

AS210132Thomas Glanzmann

GermanyRegistryRIPE NCC

As of 27th September 2026, AS210132 (Thomas Glanzmann), a network registered in Germany with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 59,127th-largest of the 79,525 networks we see originating IPv4, and the 1,763rd-largest of 2,288 in Germany. It is seen behind 3 upstream networks, most often AS212895 (Johannes Ernst) and AS20473 (The Constant Company, LLC). 75% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

3

IPv4 addresses

256

IPv6 /64s

197k

Upstream graph

The networks AS210132 is seen behind, one and two hops out, drawn from real AS paths.

AS210132Toward the internet core
Upstream graph for AS210132: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS210132Thomas GlanzmannThis networkAS11967Hop179 OUAS20473The Constant Comp…AS212895Johannes ErnstAS215828Tizian Maxime Wei…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS6939Hurricane Electri…AS52025ParadoxNetworks L…

Networks observed one and two hops upstream of AS210132 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

8

adjacent networks

Upstreams
338%
Peers
563%
Downstreams
00%

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

Upstreams of AS210132
NetworkCountryRelationshipPathsVantage pts
AS212895Johannes ErnstDEPeer15084
AS20473The Constant Company, LLCUSPeer11968
AS11967Hop179 OUEEPeer31

Prefixes

The largest blocks AS210132 originates, widest first.

Largest prefixes originated by AS210132
PrefixAddressesVisibility
44.30.185.0/2425680/81
2a0b:2a07::/4865.5k × /6464/64
2a0b:2a07:1::/4865.5k × /6464/64
2a0b:2a07:2::/4865.5k × /6464/64

Routing health

How AS210132'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

  • Valid75.0%3
  • Invalid0.0%0
  • No ROA25.0%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 3 prefixes

  • /4865.5k × /64100.0%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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