subnet.im

AS9121Turk Telekom

TürkiyeRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS9121 (Turk Telekom), an access network registered in Türkiye with RIPE NCC, originates 1,193 IPv4 prefixes covering 15.7M addresses and 206 IPv6 prefixes. By IPv4 address space that makes it the 45th-largest of the 80,747 networks we see originating IPv4, and the largest of 870 in Türkiye. It is seen behind 28 upstream networks, most often AS2914 (NTT America, Inc.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 356 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 34% of its routes reach at least 90% of full-feed peers, and 44 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,193

IPv6 prefixes

206

IPv4 addresses

15.7M

IPv6 /64s

60.9B

Upstream graph

The networks AS9121 is seen behind, one and two hops out, drawn from real AS paths.

AS9121Toward the internet core
Upstream graph for AS9121: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9121Turk TelekomThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS3356Lumen (Level 3)AS7768Nuh Ahmet Firat t…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS398465Rackdog LLCAS3549Lumen (fka. Globa…AS4849S3 Company Ltd

Networks observed one and two hops upstream of AS9121 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

774

adjacent networks

Upstreams
284%
Peers
39050%
Downstreams
35646%

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

Upstreams of AS9121
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer122,657128
AS1299Arelion (fka. Telia Carrier)SEPeer98,86287
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer63,9432
AS3356Lumen (Level 3)USPeer63,110119
AS3257GTT Communications Inc.USPeer22,403111
AS6939Hurricane Electric LLCUSPeer16,41523
AS2497Internet Initiative Japan Inc.JPPeer14,2536
AS3320Deutsche Telekom AGDEPeer13,48573
AS7713PT Telkom Indonesia TbkIDPeer9,0135
AS34984Superonline Iletisim Hizmetleri A.S.TRPeer5,2393

Prefixes

All 1,399

The largest blocks AS9121 originates, widest first.

Largest prefixes originated by AS9121
PrefixAddressesVisibility
78.160.0.0/112.1M75/76
88.224.0.0/112.1M75/76
85.96.0.0/121M75/76
95.0.0.0/121M75/76
81.212.0.0/14262k76/76
195.174.0.0/15131k76/76
212.174.0.0/15131k76/76
212.156.0.0/1665.5k76/76
62.248.0.0/1732.8k76/76
78.160.0.0/1732.8k76/76

Routing health

How AS9121'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%1,399
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more34.4%481
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%65.6%918

Prefix sizes

IPv4 — 1,193 prefixes

IPv6 — 206 prefixes

  • /324.3B × /643.4%7
  • /36268M × /6454.4%112
  • /4016.8M × /6421.4%44
  • /4865.5k × /6420.9%43

Recent changes

Announcements that started or stopped since 12th Oct 2026.

13 announced and 9 withdrawn in all; the most recent are shown.

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