subnet.im

AS204457Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.

TürkiyeRegistryRIPE NCC

As of 11th November 2026, AS204457 (Atlantis Telekomunikasyon Bilisim…), a network registered in Türkiye with RIPE NCC, originates 26 IPv4 prefixes covering 6.7k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 13,707th-largest of the 80,743 networks we see originating IPv4, and the 81st-largest of 870 in Türkiye. It is seen behind 39 upstream networks, most often AS9002 (RETN Limited) and AS6204 (INTERKVM HOST SRL), and in front of 14 downstream networks. Every one of its announcements has 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

26

IPv6 prefixes

1

IPv4 addresses

6.7k

IPv6 /64s

34.4B

Upstream graph

The networks AS204457 is seen behind, one and two hops out, drawn from real AS paths.

AS204457Toward the internet core
Upstream graph for AS204457: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS204457Atlantis Telekomu…This networkAS6204INTERKVM HOST SRLAS9002RETN LimitedAS24940Hetzner Online Gm…AS37271Workonline Commun…AS49544i3D.net B.VAS1299Arelion (fka. Tel…AS6667Elisa OyjAS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS204457 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

245

adjacent networks

Upstreams
3916%
Peers
19278%
Downstreams
146%

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

Upstreams of AS204457
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer2,48393
AS6204INTERKVM HOST SRLROPeer91264
AS37271Workonline Communications(Pty) LtdZAPeer2912
AS49544i3D.net B.VNLPeer2862
AS24940Hetzner Online GmbHDEPeer2472
AS6939Hurricane Electric LLCUSPeer19511
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer932
AS3170VeloxServ Communications LtdGBPeer702
AS18106Viewqwest Pte LtdSGPeer684
AS25091IP-Max SACHPeer613

Prefixes

All 27

The largest blocks AS204457 originates, widest first.

Largest prefixes originated by AS204457
PrefixAddressesVisibility
45.94.5.0/2425676/76
45.94.7.0/2425676/76
45.156.30.0/2425676/76
45.156.31.0/2425676/76
87.121.22.0/2425676/76
94.103.124.0/2425676/76
95.141.248.0/2425676/76
131.222.230.0/2425676/76
131.222.231.0/2425676/76
131.222.232.0/2425676/76

Routing health

How AS204457'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%27
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%27
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 26 prefixes

IPv6 — 1 prefixes

  • /2934.4B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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