AS51819 — YAR-AS

AS51819 announces 15 IPv4 prefixes covering 47,616 addresses and 1 IPv6 prefixes.

About this network

YAR-AS is operated by JSC "ER-Telecom Holding".

What it's used for

• The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries such as dynamic.yar.ertelecom.ru, pppoe.yar.ertelecom.ru, and static-business.yar.ertelecom.ru.
• The AS announces 47,616 IPv4 addresses across 17 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a leaf access network rather than a transit provider.
• Traffic consists of fixed-line broadband subscribers in the Yaroslavl and Kazan regions, utilizing PPPoE and dynamic IP assignment for residential users and static IPs for business customers.

Notable

• Registrants consistently identify JSC "ER-Telecom Holding" and its regional branches (Yaroslavl, Kazan), aligning with the AS holder.
• The inventory is subdivided into multiple /21 and /20 blocks, with netnames like ERTH-YAR-PPPOE-10-NET reflecting site-by-site segmentation of the corporate estate.
• The address inventory includes blocks from different regional branches, such as ERTH-KAZAN-PPPOE-36-NET, indicating a multi-region operational footprint under a single AS.

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

Announced prefixes

• 5.3.28.0/24
• 5.165.160.0/20
• 5.165.216.0/21
• 5.166.0.0/19
• 5.167.32.0/20
• 5.167.80.0/20
• 37.113.72.0/21
• 37.113.88.0/21
• 37.113.240.0/21
• 109.195.112.0/20
• 176.212.48.0/21
• 176.212.80.0/21
• 176.214.64.0/19
• 176.215.88.0/21
• 188.187.233.0/24
• 2a02:2698:9400::/38

Upstream networks

• AS9049 JSC "ER-Telecom Holding"

Adjacent networks

• AS9049 JSC "ER-Telecom Holding"

Routing security

• RPKI: 5 valid, 0 invalid and 51 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 93% of announcements registered; 109 route objects.
• Listed in as-sets: AS-BLOCK-SET, AS-BLOCKED-RU, AS-ERTH-CITIES, AS-HURRICANEV6, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-YAR, AS-YAR-IX, AS209141:AS-RUCUST.