AS21127 — ZSTTKAS Novosibirsk, Russia

AS21127 announces 155 IPv4 prefixes covering 214,528 addresses and 1 IPv6 prefixes.

About this network

ZSTTKAS is operated by TransTeleCom, a major Russian telecommunications provider.

What it's used for

• The address space carries residential and business customer traffic, evidenced by reverse DNS entries like host-46-50-232-0.bbcustomer.zsttk.net and netnames such as ZSTTK-RTL-NET and RU-TTKS-20120126.
• With 214,528 IPv4 addresses announced across 187 prefixes and only 8 observed neighbours, the high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.

Notable

• Registrants include ZSTTK NOC, TTK-Svyaz, and Joint Stock Company TransTeleCom, reflecting the corporate structure and subsidiaries of the TransTeleCom group.
• The address inventory is finely subdivided into numerous /20 and /21 blocks, consistent with a large-scale ISP managing distinct customer segments or regional sites.

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

Announced prefixes

• 37.49.192.0/21
• 37.49.200.0/22
• 37.49.206.0/24
• 37.49.208.0/20
• 37.205.48.0/21
• 37.205.64.0/21
• 37.205.72.0/22
• 37.205.76.0/24
• 37.205.78.0/23
• 37.205.80.0/20
• 46.50.128.0/19
• 46.50.160.0/23
• 46.50.163.0/24
• 46.50.164.0/22
• 46.50.168.0/21
• 46.50.176.0/20
• 46.50.192.0/21
• 46.50.200.0/22
• 46.50.204.0/23
• 46.50.206.0/24
• 46.50.208.0/20
• 46.50.224.0/19
• 46.241.0.0/20
• 46.241.16.0/23
• 46.241.20.0/22
• 46.241.24.0/21
• 46.241.32.0/21
• 46.241.40.0/22
• 46.241.45.0/24
• 46.241.46.0/23
• 46.241.48.0/20
• 46.241.64.0/22
• 46.241.70.0/23
• 46.241.72.0/22
• 46.241.76.0/23
• 46.241.80.0/22
• 46.241.86.0/23
• 46.241.88.0/24
• 46.241.90.0/23
• 46.241.92.0/22
• 46.241.96.0/23
• 46.241.104.0/23
• 46.241.107.0/24
• 46.241.108.0/22
• 46.241.112.0/21
• 46.241.120.0/22
• 46.241.124.0/23
• 46.241.127.0/24
• 80.89.128.0/21
• 80.89.136.0/23
• 80.89.138.0/24
• 80.89.140.0/22
• 80.89.144.0/20
• 81.1.192.0/20
• 81.1.210.0/23
• 81.1.212.0/22
• 81.1.216.0/21
• 81.1.224.0/21
• 81.1.233.0/24
• 81.1.234.0/23
• 81.1.236.0/22
• 81.1.240.0/23
• 81.1.242.0/24
• 81.1.244.0/22
• 81.1.248.0/21
• 82.200.0.0/20
• 82.200.16.0/24
• 82.200.18.0/23
• 82.200.20.0/22
• 82.200.24.0/21
• 82.200.32.0/20
• 82.200.48.0/23
• 82.200.50.0/24
• 82.200.52.0/22
• 82.200.56.0/23
• 82.200.59.0/24
• 82.200.60.0/22
• 82.200.64.0/21
• 82.200.72.0/22
• 82.200.76.0/24
• 82.200.78.0/23
• 82.200.80.0/20
• 82.200.96.0/20
• 82.200.112.0/21
• 82.200.120.0/23
• 82.200.124.0/22
• 91.105.128.0/24
• 91.105.130.0/23
• 91.105.132.0/22
• 91.105.136.0/22
• 91.105.140.0/23
• 91.105.143.0/24
• 91.105.144.0/22
• 91.105.148.0/23
• 91.105.150.0/24
• 91.105.152.0/21
• 91.105.160.0/21
• 91.105.168.0/22
• 91.105.172.0/23
• 91.105.174.0/24

and 56 more.

Upstream networks

• AS20485 Joint Stock Company TransTeleCom

Downstream networks

• AS31364 Joint Stock Company TransTeleCom
• AS42323 Limited Liability Company "TTK-Svyaz"
• AS42408 Transvyaz-N LLC
• AS198021 LLC "Business Alliance"
• AS58008 Service Desk Ltd.
• AS51256 JSC "Special Economic Zone of Technology-Innovative Type "Tomsk"
• AS30871 Municipalnoe kazennoe uchrezhdenie goroda Novosibirska "Hozyaistvennoe upravlenie"
• AS47530 Novokuznetsk Telecom Ltd

Adjacent networks

• AS20485 Joint Stock Company TransTeleCom
• AS31364 Joint Stock Company TransTeleCom
• AS42323 Limited Liability Company "TTK-Svyaz"
• AS42408 Transvyaz-N LLC
• AS30871 Municipalnoe kazennoe uchrezhdenie goroda Novosibirska "Hozyaistvennoe upravlenie"
• AS198021 LLC "Business Alliance"
• AS58008 Service Desk Ltd.
• AS51256 JSC "Special Economic Zone of Technology-Innovative Type "Tomsk"
• AS47530 Novokuznetsk Telecom Ltd