AS16135 — TURKCELL-AS Turkcell A.S.

AS16135 announces 111 IPv4 prefixes covering 1,690,624 addresses and 21 IPv6 prefixes.

About this network

One point seven million addresses, thirty IPv6 blocks, and most of them registered to an abuse desk rather than to the company.

What it's used for

• A mobile operator. One hundred and eleven IPv4 prefixes and thirty IPv6 prefixes announced from Turkey, more than one million six hundred thousand addresses, through one observed BGP neighbour.

Notable

• Most netnames are a country code, the brand and the word for the internet, with no date, and the only registrant listed on them is the operator's abuse handling role. The company itself appears on just two blocks, which use a dated netname template instead.
• The IPv6 allocations are cut at unusual boundaries, several of them at sizes that sit between the round numbers most operators use, which is the mark of a very large space subdivided by region or service.
• The IPv4 blocks run from large aggregates down to small ones across more than a hundred entries, mostly in a handful of contiguous ranges.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Mobile networks hold enormous address space for a subscriber base that is almost never reachable from outside. Handsets get addresses to make connections, not to receive them, and a single such operator can hold more numbers than a small country's fixed-line providers combined.
• Naming an abuse role as the registrant of record on most blocks is a practical choice for an operator whose ranges generate complaints continuously: whoever writes in reaches the desk that can act.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 5.11.128.0/17
• 5.24.0.0/16
• 5.25.0.0/20
• 5.25.32.0/19
• 5.25.64.0/18
• 5.25.128.0/19
• 5.25.160.0/20
• 5.25.176.0/21
• 5.25.192.0/18
• 5.26.0.0/16
• 5.27.0.0/18
• 5.27.64.0/20
• 5.27.80.0/21
• 5.27.88.0/22
• 5.27.108.0/22
• 5.27.112.0/21
• 5.27.120.0/22
• 5.27.128.0/17
• 31.140.0.0/16
• 31.141.0.0/21
• 31.141.8.0/22
• 31.141.16.0/20
• 31.141.32.0/19
• 31.141.80.0/20
• 31.141.176.0/20
• 31.141.192.0/18
• 31.142.0.0/16
• 31.143.0.0/18
• 31.143.64.0/19
• 31.143.128.0/17
• 77.67.128.0/18
• 77.67.192.0/19
• 86.108.140.0/24
• 86.108.165.0/24
• 86.108.183.0/24
• 86.108.184.0/21
• 86.108.220.0/22
• 86.108.233.0/24
• 86.108.234.0/24
• 86.108.240.0/23
• 86.108.243.0/24
• 86.108.244.0/24
• 86.108.246.0/23
• 86.108.248.0/24
• 86.108.254.0/23
• 141.196.0.0/17
• 141.196.128.0/18
• 176.88.56.0/24
• 176.89.0.0/17
• 176.89.128.0/19
• 176.89.192.0/18
• 176.90.0.0/15
• 176.227.0.0/17
• 176.237.0.0/17
• 176.237.128.0/18
• 176.237.192.0/19
• 176.237.224.0/20
• 176.238.0.0/16
• 176.239.0.0/19
• 176.239.96.0/19
• 176.239.128.0/19
• 176.239.192.0/18
• 178.240.0.0/18
• 178.240.64.0/19
• 178.240.96.0/20
• 178.240.128.0/18
• 178.240.192.0/19
• 178.240.224.0/20
• 178.241.0.0/17
• 178.241.128.0/18
• 178.241.224.0/20
• 178.241.240.0/22
• 178.241.248.0/23
• 178.242.0.0/15
• 178.244.16.0/20
• 178.244.32.0/19
• 178.244.64.0/18
• 178.244.128.0/17
• 178.245.64.0/19
• 178.245.128.0/17
• 178.246.0.0/15
• 188.56.0.0/18
• 188.56.192.0/18
• 188.57.0.0/17
• 188.57.128.0/19
• 188.57.160.0/20
• 188.57.176.0/22
• 188.57.240.0/22
• 188.58.0.0/17
• 188.58.128.0/19
• 188.58.192.0/19
• 188.59.0.0/17
• 188.59.128.0/18
• 188.59.192.0/20
• 188.59.213.0/24
• 188.59.215.0/24
• 188.59.219.0/24
• 188.59.220.0/23
• 188.59.223.0/24
• 188.59.227.0/24

and 32 more.

Upstream networks

• AS34984 Superonline Iletisim Hizmetleri A.S.

Adjacent networks

• AS34984 Superonline Iletisim Hizmetleri A.S.