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AS12843TelemaxX Telekommunikation GmbH

GermanyRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS12843 (TelemaxX Telekommunikation GmbH), an access network registered in Germany with RIPE NCC, originates 54 IPv4 prefixes covering 193k addresses and 13 IPv6 prefixes. By IPv4 address space that makes it the 1,424th-largest of the 80,733 networks we see originating IPv4, and the 34th-largest of 2,330 in Germany. It is seen behind 35 upstream networks, most often AS2914 (NTT America, Inc.) and AS174 (Cogent Communications, LLC), and in front of 35 downstream networks. 96% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

54

IPv6 prefixes

13

IPv4 addresses

193k

IPv6 /64s

163B

Upstream graph

The networks AS12843 is seen behind, one and two hops out, drawn from real AS paths.

AS12843Toward the internet core
Upstream graph for AS12843: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12843TelemaxX Telekomm…This networkAS174Cogent Communicat…AS2914NTT America, Inc.AS6939Hurricane Electri…AS9002RETN LimitedAS13030Init7 (Switzerlan…AS151326DCConnect Communi…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS12843 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

248

adjacent networks

Upstreams
3514%
Peers
17872%
Downstreams
3514%

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

Upstreams of AS12843
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer2,59469
AS174Cogent Communications, LLCUSPeer2,52482
AS6939Hurricane Electric LLCUSPeer1,14137
AS9002RETN LimitedGBPeer4367
AS13030Init7 (Switzerland) Ltd.CHPeer2844
AS7713PT Telkom Indonesia TbkIDAdjacent2342
AS18106Viewqwest Pte LtdSGPeer2152
AS32590Valve CorporationUSPeer1582
AS3320Deutsche Telekom AGDEPeer15215
AS8455atom86 BVNLPeer1482

Prefixes

All 67

The largest blocks AS12843 originates, widest first.

Largest prefixes originated by AS12843
PrefixAddressesVisibility
149.236.0.0/1665.5k76/76
149.236.0.0/1732.8k76/76
149.236.128.0/1732.8k76/76
85.115.0.0/198.2k76/76
213.144.0.0/198.2k76/76
37.228.160.0/204.1k76/76
81.26.160.0/204.1k76/76
37.16.64.0/212k76/76
46.167.16.0/212k76/76
46.232.224.0/212k76/76

Routing health

How AS12843'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

  • Valid95.5%64
  • Invalid0.0%0
  • No ROA4.5%3

Propagation

  • Globally propagated90% of full-feed peers or more94.0%63
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%6.0%4

Prefix sizes

IPv4 — 54 prefixes

IPv6 — 13 prefixes

  • /2934.4B × /6430.8%4
  • /3017.2B × /647.7%1
  • /324.3B × /6415.4%2
  • /36268M × /647.7%1
  • /4865.5k × /6430.8%4
  • /49 and longerAggregated7.7%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

  • Announced185.55.100.0/2329th Oct 2026
  • Announced195.66.74.0/2429th Oct 2026
  • Withdrawn185.55.100.0/2322nd Oct 2026
  • Withdrawn195.66.74.0/2422nd Oct 2026
  • Withdrawn2a01:8e20::/3222nd Oct 2026

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